BRIDGES AND STRUCTURES DIRECTORATE

BRIDGES AND STRUCTURES DIRECTORATE

Important Achievement of B & S Directorate during Last Seven Years

SN Broad Area of

Achievement

Title of

Achievement Description of Achievement Likely Benefits

Current Status

of

Implementation

Year 2014-15

1

Throughput

Enhancement

Design for DFC

Loading (32.5t

Axle Load)

Details of Deck Slab (M-30)

of Composite Girder 12.2m

Span (Straight track ) DFC

Loading (32.5t Axle Load)

Standard design

and drawing for IR

Expeditious

planning and

execution

Used for

constructing

standard bridges

on IR.

Design for 25t

Loading 2008

Details of Deck Slab (M-30)

of Composite Girder 18.3m

Span (Straight track & Curved

track upto 4 degree) 25t

Loading-2008

Throughput

Enhancement

Barbed Wire fencing along the

track, with provision of Panel

for future, on identified high

speed routes.

Drawings in use

on Indian

Railways.

Freight

Throughput

Freight

Throughput

Designs for 25t

Loading 2008

Revised Design and Drawing

of 6.1m Pre tensioned PSC

Slab for “25t loading-2008”.


of 9.15m Post Tensioned PSC

Slab for “25t loading-2008”.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways.

Designs for 25t

Loading 2008

Design and Drawing of 30.5m

open web girder (welded

through type) for “25t loading-

2008”.




2008”.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways.

H-beam sleeper

Details of h-beam sleeper with

switch expansion joint for

bridges (BG) (for field trial

only)

D.F.C. loading

Residual camber for DFC

loading (welded type) standard

spans.

Cable passing

Open Web Girder

Sketch drawing showing

typical details of clamping

arrangement for passing of

service cable on open web

SN Broad Area of

Achievement

Title of


Current Status

of

Implementation

girders.

Year 2015-16

2.

Throughput

Enhancement

Designs for 25t

Loading 2008

Double Box culvert suitable

for double line track curved up

to 100.

Segmental RCC box for RUB

with foothpath with provision

of curtain and drop wall.

Standard design

and drawing for IR

Expeditious

planning and

execution

Used for

constructing

standard bridges

on IR.

Throughput

Enhancement

Designs for 25t

Loading 2008

Designs of RCC Abutments

for 6.1m PSC Slab (2 Unit)

for seismic zone IV & V and

severe environment

conditions.

(i) upto height 4m

(ii) more than 4.0m and upto

6.0m height.

Revised designs of RCC

Abutments for 9.15m PSC

Post-tensioned slab for seismic

zone IV & V and severe

environment conditions.

(i) upto height 4m


6.0m height.

Standard design

and drawing for IR

Expeditious

planning and

execution

.

Used for

constructing

standard bridges

on IR.

Throughput

Enhancement

Designs for 25t

Loading 2008

Revision of drawings for RCC

Single Box Culvert.

Standard design

and drawing for IR

Expeditious

planning and

execution

Used for

constructing

standard bridges

on IR.

Freight

Throughput

Designs for 25t

Loading 2008


Post tensioned PSC Slab for

“25t loading-2008”.


U Girder Post Tensioned for



U Girder Post Tensioned for


Enhanced freight

throughput.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways.

Freight

Throughput

Designs for 25t

Loading 2008




2008”.


Enhanced freight

throughput.

Standard design

and drawing for IR

Expeditious

Drawings in use

on Indian

Railways.

SN Broad Area of

Achievement

Title of


Current Status

of

Implementation



2008”.




2008”.

planning and

execution.

Road over bridge


of road over bridge bow string

steel girder 48m clear span.
















Year 2016-17

3.

Throughput

Enhancement

Designs for 25t

Loading 2008

RCC Pier (with ht 4 m) for

6.1m PSC slab for seismic

zone IV and V and severe

environment conditions.

Revised designs of RCC pier

for 9.15 m PSC Post-tensioned

slab for seismic zone IV & V

and severe environment

conditions.

(i) upto height 4m


6.0m height.

Standard design

and drawing for IR

Expeditious

planning and

execution

Used for

constructing

standard bridges

on IR.

Throughput

Enhancement

Design for DFC

Loading (32.5t

Axle Load)

Revision of drawings for RCC

Single Box Culvert

conforming to DFC Loading.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Used for

constructing

standard bridges

on IR.

Freight Designs for 25t Design and Drawing of 3.05m Enhanced freight Drawings in use

SN Broad Area of

Achievement

Title of


Current Status

of

Implementation

Throughput Loading 2008 Post tensioned PSC Slab for



Post tensioned PSC Slab for



(M60grade) Post tensioned

PSC Slab for “25t loading-

2008”.

throughput.

Standard design

and drawing for IR

Expeditious

planning and

execution.

on Indian

Railways

Freight

Throughput

Road over bridge




Design and Drawing of

Splicing arrangement for the

bending of x-girder of bow

string arch girder.

Enhanced freight

throughput.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways

Road over bridge

NHAI(with

special class

loading of 385

ton)

Design and Drawing of Road

over bridge bow string steel

girder 42m clear span for

NHAI two lane one way (for

four lane)as per IRC-sp84-

2014(with special class

loading of 385 ton)







loading of 385 ton)







loading of 385 ton)

Year 2017-18

4. Throughput

Enhancement

As per

Requirement of

Signal

Directorate.

Drawing of Footing for Main

Line Signal Post.

Standard design

and drawing for IR

Expeditious

planning and

execution

Drawings in use

on Indian

Railways.

Based on

Southern Rly.

Standard drawing for

Construction of

Standard design

and drawing for IR

Used for

constructing

SN Broad Area of

Achievement

Title of


Current Status

of

Implementation

RUB/SUBWAY using

combination of Cut and Push

the Single Long Barrel RCC

Box.

Expeditious

planning and

execution

standard bridges

on IR.

Design for DFC

Loading (32.5t

Axle Load)

Revised drawings of Double

Box Culvert for straight track

conforming to DFC Loading.

Standard design

and drawing for IR

Expeditious

planning and

execution

Used for

constructing

standard bridges

on IR.

Freight

Throughput

Designs for 25t

Loading 2008


4.57(M45grade) Post

tensioned PSC Slab for “25t

loading-2008”.


12.2m(M60grade) Post

tensioned PSC U Slab for

“25t loading-2008”

Enhanced freight

throughput.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways

Freight

Throughput

Road over bridge

NHAI(with

special class

loading of 385

ton)







loading of 385 ton).








Enhanced freight

throughput.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways

Road over bridge



girder for zone-v 48m clear

span.




span.




span.



SN Broad Area of

Achievement

Title of


Current Status

of

Implementation


span.

Year 2018-19

Freight

Throughput

Designs for DFC

Loading


Post tensioned PSC 4 I Girder

for DFC loading

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways

Freight

Throughput

Designs for 25t

Loading 2008


106.7m open web girder

(welded through type) for “25t

loading-2008”.

Standard design

and drawing for IR

Expeditious

planning and

execution.

Drawings in use

on Indian

Railways

Road over bridge

NHAI three lane

as per IRC: SP:

73-2015(with

special class

loading of 385

ton)




NHAI three lane (for four

lane) as per IRC-sp73-



Year 2019-20

Freight

Throughput

Ballasted deck

type OWGs for

railway test track

Design & drawings of

30.5m,45.7m,61.0 m for test

track of NWR

Standard design

and drawing for

test track

Drawings are in

use on Indian

Railways

Drawing No.CBS -0047, Typical Plan for Sacrificial shuttering arrangement for composite girder

type ROB.

Drawings RDSO/B-10283, RDSO/B-10283/1, RDSO/B-10283/2 RDSO/B-10283/3, RDSO/B-

10283/4, RDSO/B-10283/5, RDSO/B-10283/6 & RDSO/B-10283/7 for 24.4 m post tensioned

Girder for DFC loading have been issued in March 2020.

Year 2020-21

Freight

Throughput Road over bridge

Design & drawing of Road


girder 72.0m clear span for

NHAI three lane one way

(with special class loading of

385 ton), Zone - V

Standard design

and drawing for

adoption over

Indian Railways

for six lane

highways

Drawings in use

on Indian

Railways

Design and Drawing No. RDSO/B-10364, RDSO/B-10365, RDSO/B-10366, RDSO/B-10367,

RDSO/B-10368 & RDSO/B-10369 issued for Pier, Pier Cap, Piles, Pile Cap, for Pier P1, P2, P3,

P4, P5 & P6 respectively of Bridge No. 22 of Dedicated Test Track at NWR in June & July 2020.

Design and Drawing No. RDSO/B-10370 & RDSO/B-10371 issued for Abutment, Abutment Cap,

Piles, Pile Cap, for Abutment A1 & A2 of Bridge No. 22 of Dedicated Test Track at NWR in

Aug.’2020.

Design and Drawing no. RDSO/B-10369/1 issued for pedestal of Pier P6 for Bridge No. 22 of

Dedicated Test Track at NWR in Dec.’2020.

Design and Drawing No. RDSO/B-10372 issued for Abutment, Abutment Cap, Piles, Pile Cap, for

Abutment A1 & A2 of Bridge No. 6 of Dedicated Test Track at NWR in Sept.’2020.

Plate Girders

SN Description Drawing no.

1 12.2 m Plate Girder- Welded Type (25t

Loading 2008) RDSO/B-16014/R1 Series

2. 24.4 m Plate Girder- Welded Type

(25t Loading 2008) RDSO/B-16016/R Series

Composite Girder

1. 12.2 m Composite Girder- Welded Type

(25t Loading 2008) RDSO/B-11752/R Series


(25t Loading 2008) RDSO/B-11753/R1 Series





Road Over Bridges(Details of POT- PTFE Bearing)

1 18 m (ROB) IRC-6 Loading Welded

type RDSO/B-11756/6R1







Deck Slab

1

Details of deck slab for 5 Girder

arrangement for 18m, 24m, 30m and

36m Span ROB

RDSO/B-11771

Road Over Bridges (NHAI Configuration)

1. 18 m (NHAI ROB) IRC-6 Loading 2014

Welded Type RDSO/B-11772 Series







Temporary Arrangement

1. 26.8 m 25t Loading- Welded Type R. H

Plate Girder RDSO/B-11039R Series

2. 20.4 m 25t Loading- Welded Type

Temporary Double I Plate Girder RDSO/B-11041R Series

3. 26.8 m 25t Loading- Welded Type

Temporary Double I Plate Girder RDSO/B-11042 Series

4.

Temporary box crib arrangement for

support of relieving girder of length upto

26.8m for 25 t loading

RDSO/B-11043

Miscellaneous

1 Passing of service cable CBS-0039/R

2 Side pathway parallel to steel plate

girder CBS-0042 Series

3 Typical plan of side pathway in standard

composite girder CBS-0046

4 Use of HSFG bolting in Railway bridges RDSO/B-11760/R1

Other Drawings

Design and drawings of POT-PTFE for 36m, 42m and 48m has been completed. Drawing for 36m (Drg. No.

RDSO/B-10407/9), 42 m (Drg. No. RDSO/B-10408/9) and for 48m (Drg. No. RDSO/B-10406/9) have been

uploaded on RDSO website.

Design and Drawing of POT-PTFE bearing for 30m (Drg No. RDSO/B-10409/10), 54m (Drg No.10410/10) and

60m (Drg No. 10411/10) bow string arch girder for Road over Bridge has been completed and uploaded on

RDSO web site.

Design and drawing of special channel sleeper for bridge No. 110 at Kanpur has been developed.

Joint note dated 25-02-2019 zero toe load fastening system for use in H-beam sleepers on girder bridges for

vendor development sent to Railway Board.

DRAWING NO DETAIL ISSUE

RDSO/B-10424 to

10424/5

Stainless steel FOB 6m wide for span 25 -30m (for trial

only) 15-01-2021

RDSO/B-104246 to

10426/5

Stainless steel FOB 6m wide for span 20 -25m (for trial

only) 09-03-2021

RDSO/B-11754/R2 Revised 25t loading 2008 30.5m span Composite welded

girder ( upto 4 degree curve ) 16-06-2021

Rail Structure Interaction (RSI)

Rail-Structure Interaction (RSI) Studies for Continuation of LWR on ballasted deck bridges:

B & S Dte. has done complete study in this subject

Software: LUSAS Bridge Plus and MIDAS advanced procured

Studies for RSI on 154 bridges using LUSAS Bridge Plus and MIDAS

Continuation of LWR on ballast less steel girders approved by Railway board recently. RDSO issued

maintenance, anchorage and other instructions along with drawings in Dec. 2017.

Total No. of RSI Analysis:

2018 2019 2020 Up to June 2021

13 18 16 08

Guidelines Issued

Technical Guidelines for Box Pushing technique issued to Zonal railways.

Guidelines have been issued for use and pullout test of rag bolts to be used in tunnels for fixing Over Head

Equipments. (July 2014).

Guidelines have been issued for “Cut n Cover” method for construction of Limited Height Subway. (April

2015).

Guidelines have been issued for provision of OHE Mast for electrification at Pier/Abutment of new and

existing bridges along with typical design for OHE Mast foundation at pier of new bridge and different

arrangement for provision of OHE Mast on existing bridges.(Oct. 2015)

Guidelines have been issued for “Planning of Important Bridges” for obtaining RDSO approval. (Nov.

2015)

Guidelines have been issued on “Methodology of Load Testing of Arch Bridges”, especially to check

suitability of such bridges for 25t loading standards. (Revised in June 2017 vide BS :116R)

Guidelines have been issued on “Corrosion Protection of Concrete Structures”. (Revised in April 2018

vide BS: 88R)

Guidelines for Carrying out Rail-Structure Interaction for Railway Bridges (BS-114, Revision 2).

Development of guidelines for use of stud shears connection in composite construction in bridges (BS-

115).

Development of specification and Schedule of technical requirement for vendor approval of HSFG bolting

assembly with DTI washer.

Revision of guidelines for use of High Strength Friction Grip (HSFG) bolting assembly on bridges of

Indian Railways (BS-111 Rev.-6).

After Bhuj (Gujrat) earthquake incidence, it was felt to review the provisions of earthquake in design of

bridges over Indian Railways. The detailed study was conducted and the guidelines were issued jointly in

collaboration with IIT, Kanpur. Further revised and modified guidelines were issued by RDSO through BS

Report-118 in January 2015. With the experience gained over period of time and necessary deliberations in

82nd, 83rd and 84th BSC Meetings, IRS Code for Earthquake Resistant Design of Railway Bridges

(Seismic Code) has been prepared and issued on 27.10.2017 for adoption on Indian Railways.

RDSO Guideline BS-130 is issued for fabrication inspection of RDSO Standard Spans composite I -

Section Steel girder for ROB.

Guidelines for Load Testing of Bridges has been issued Jan.’2021.

Report of the Committee to examine and submit recommendations on waterlogging/ drainage problem in

RUB/ Subways has been issued in April 2020.

Revised “Guideline on Type of Foundation for Railway Bridges, Report no. BS-127(R1)” has been issued

in June 2021.

25t axle load operations over issued and circulated to Zonal Railways vide RDSO Letter No.

CBS/Golden/Q/Strength dated 08.08.2006

Technical inputs required for road map to operation of 25t axle load beyond 45kmph was issued vide

RDSO Letter No. CBS/25T Axle Load dated 10.12.2020

Follow-up action on the minutes of Railway Board meeting held on 10.12.2020 was sent to R.B vide Letter

No. RDSO-BnSOEBS(SB-2)/19/2020-O/o ED/B n S/RDSO dated 23.06.2021

25t axle load operations over issued and circulated to Zonal Railways vide RDSO Letter No.

CBS/Golden/Q/Strength dated 08.03.2016

Technical inputs required for road map to operation of 25t axle load beyond 45kmph was issued vide

RDSO Letter No. CBS/25T Axle Load dated 10.12.2020

Follow-up action on the minutes of Railway Board meeting held on 10.12.2020 was sent to R.B vide Letter

No. RDSO-BnSOEBS(SB-2)/19/2020-O/o ED/B n S/RDSO dated 23.06.2021

Guidelines on the Technology of 3-D Scanning of River Beds were issued to Zonal Railways in

May’2020. (BSC item No.1083)

Proof Checking and Consultancy-

Bridge no. 111 40x40.7m at Jhoosi bridge of N.E. Railway near Allahabad: The proposal for rebuilding the

bridge was examined advised accordingly.

Procedural checking of design document of Sone Bridge No. 531 .

Problem in ballast-less track in tunnels. Team from RDSO (B&S and Track Directorate) visited the site,

detailed technical report issued. Water ingress below base concrete need to be controlled. It was also

suggested that ballast-less track designed by RDSO be tried in some length.

Minor Cracks in PSC Box Girders of Br No 695 in BRC division. Horizontal cracks observed at junction

of deck and girder and at location where cold joint formed due to casting of Girder in two stages. NDT

testing was done by RDSO team, structurally it was found good. Quality control during construction was

lacking. Railway was advised to do epoxy grouting/painting, keep bridge under observation and gradually

relax the speed restriction, based on satisfactory performance of remedial measures done.

Minor Cracks in PSC Box Girder- Br No 196 on Udhampur-Katra section:- Horizontal cracks observed at

junction of deck and girder and at location where cold joint formed due to casting of Girder in two stages.

NDT testing was done by RDSO team, structurally it was found good. Quality control during construction

was lacking. Railway was advised to do epoxy grouting/painting, keep bridge under observation and

gradually relax the speed restriction, based on satisfactory performance of remedial measures done.

PSC Box Girder Bridge 20X45.1 m span, based on RDSO Drg BA-10232 is being constructed by RVNL.

They made a reference that some reinforcement details in the drawing are not clear. Based on reference

received, it was re-assessed and modified bar-bending schedule has been issued

CE/Con/E/NR, has forwarded a proposal for modifications of overall length of PSC Slab for 12.2m in

accordance with requirement at site for bridge no 112 & bridge no 187 (in Lohta-Jangai section). Designs

were accordingly, checked and modifications advised to Railway.

Chief Engineer/Construction, Central Railway advised that some cracks were observed (on side face in

anchor zone) on post tensioned PSC Slab 9.15 m, during post tensioning operation. Similar cracks were

also observed by RVNL (in Rewari-Manheru project). RDSO officials visited work sites of Central

Railway and RVNL to study the problem. Though, there is no deficiency in design, however, in field some

problems are noticed.

Design has been revised. Some modifications have been made based on earlier issued drawing for MBG

loading. Revised drawing issued vide RDSO drg no. RDSO/B-10272/R dated 27.01.2015.

This drawing has been used by RVNL in Rewari-Manheru doubling project and found satisfactory

Southern Railway construction organization (Kochi) requested to suggest methodology for fixing of

Elastomeric Bearings in position where gap between Girder bottom and top of bearing is excessive. The

matter was studied in detail based on earlier similar problems examined by RDSO, methods adopted on

other organizations and instructions issued earlier in this regard. Based on these methodology for the

rectification have been advised to Southern Railway vide CBS/DPC dated 13.03.2015.

RVNL requested RDSO to examine the suitability of PSC girder (as per RDSO drawing No. RDSO/B-

10270, suitable for c/c of piers as 26.2m) for c/c of piers upto 26.6m. The design was examined and found

suitable with some changes, necessary modifications have been advised to RVNL vide RDSO’s letter No.

CBS/DPC dated 27.05.2015.

Chief Project Manager-II/Bhubaneswar vide letter no. RVNL/BBS/HDS-PRDP/Railways/17/03/7091

dated 17.07.2015, forwarded design and drawings for 18.3m PSC slab suitable for 25t axle load and upto

2.5 degree curvature for in principle approval of RDSO. The designs and drawings have been scrutinized.

There are certain clarifications required from RVNL/Consultant (involved in the design), RVNL has

accordingly been advised vide letter No. CBS/DPS dated 14.08.2015.No clarification has been received

from RVNL yet.

As desired by CPM/RVNL/R, for clarification Alterations 1 A to 1 D has been issued in Drawing Nos:

RDSO/B-10270/1 & RDSO/B-10270/4.

RVNL advised that cracks have been observed in span No. 4 & 6 of Bridge No. 557 (Spans 20x45.1m)

PSC Box girder, span no 2 of Bridge No. 17 UP (3x30.5m) and Bridge 18 (1X30.5m) vide letter No.

2014/GCM/D/Misc.Corres dated 30.03.2015. RDSO Design and Testing team inspected these bridges.

NDT testing have also been done report in this regard is under issue.

Detailed report in respect of Bridge 557, 17 and 18 have already been issued.

Chief Engineer (Const.)/MTP asked clarification on “cl.15.6.4 of IRS Concrete Bridge Code” for its

applicability on circular short column subjected to Axial load and either bending about the major axis or

biaxial bending. The matter was examined and clarification issued vide letter No. CBS/Code/A&C dated

10.08.2015.

DMRC referred the issue of load to be applied in case of load testing of PSC Girders. The existing

provisions of IRS-CBC were studied and clarification has been advised to all zonal Railways. This is

required for construction organizations also

One hanger (out of 24 hangers) of Span 19 has been broken on Third Godavari Bridge near Rajhamundry

Station on SCR. Bridge site was visited on 05.08.2015 (accompanied to Adviser Bridges, Railway Board)

and observations made have been advised to Railway vide letter No. CBS/MBSE/GB dated 13.08.2015.

In the incidence of sudden collapse of ballast retainer of Bridge No.54 between Ratlam-Godhra major

section (Limkheda-MangalMahudi block section) at KM 510/17-11.

On 7th June 2016 at around 06.00 hrs, The cantilever deck slab alongwith ballast retainer of bridge No.54

on UP road at km 510/17-11 between Limkheda and MangalMahudi stations on GODHRA-

RATLAM section of Western Railway collapsed. The site was inspected by ED/Structures and a joint

report along with PCE /WR was prepared for further action.

Board vide letter no. 2016/24/CE-III/BR/Jogighopa Bridge dated 07.06.2016 advised RDSO to inspect

Jogighopa bridge on Guwahati – Bongaigaon section of NFR regarding structural deficiencies in the

Narayan Setu on Brahamputra River. RDSO team inspected the bridge during June 2016 and a detailed

report was submitted to Board. Board has asked NFR to take action as per the report submitted by RDSO.

Chief Engineer (C) MTP desired some clarification on 18.3 m PSC-I girder drawing no. RDSO/B-10273

vide letter no. MT/W/R/BSU/40/CA/Pt. I dated 01.01.2016. The queries regarding reinforcements and

sheathing duct etc were examined and replied vide letter no. CBS/DPC dated 07.01.2016.

South Central Railway requested to examine the suitability of 12.2m PSC slab (Drg. No. RDSO/B-10271)

for skew condition and centre to centre of pier 14570 mm/14580 mm with a skew angle of 18.5 degree.

This matter was examined and replied vide CBS/DPS dated 10.06.2016

Construction Organization of Central Railway has taken up works of Instrumentation in association with

IIT/Roorkee. As requested by Central Railway, RDSO officials visited the site in 2nd week of July 2016 to

see the instrumentation regarding measurement of stresses in PSC girders

Clarification regarding non suitability of 12.2 m PSC slab vide RDSO/B-10271 for curved alignment upto

4o given to M/s KRCL along with advice to refer RDSO Drawing No. RDSO/B-10265 for curved

alignment upto 2.50.

Light weight 9.15m span PSC slab has been designed. Railway Board vide letter no. 2017/10/CE-

III/BR/PSC Slab, dated 20.06.2017 has directed for replacement of Steel girders up to 9.15 m span by PSC

Slabs

Clarification regarding dispensation of provision of uniform bedding layer of cement and cast iron borings

in 1:1 proportion underneath PSC Slabs over properly designed bed blocks of adequate strength given to

WR on 22.08.2017.

Examination of cracks in PSC I Girder (RDSO/B-10262) has been done in Dausa-Deedwana section and

Load Testing as per IRS CBC has been advised.

Checking of design and drawing of 44.5 m span Steel composite girder ROB NHAI configuration in State

of Andhra Pradesh.

Primary Scrutiny of design and drawing of 50 m span steel composite Semi through girder ROB

submitted by S. Rly.

Checking suitability of Bridges for design & drawing of plate girders and composite girder for running 25 t

loading-2008@ 100kmph on DFC routes & 25t Identified routes.

Checking of bridge no. 251 up of Northern Railway 60.96 m OWG for replacing trough has been done.

Checking of channel sleeper for extension piece for RVNL.

Checking of end bracket for 76.2m span OWG for RVNL of bridge at Kalpi in NCR.

Necessary guidance and clarification given to N.F. Railway on various issues including camber for Bridge

No. 409 Kachhla Bridge.

Necessary guidelines also issued to all zonal railways on Camber of prestressed open web girder.

Checking of 45.7m open web girder of W.C. Railway for CC+8+2 loading has been done.

Development of sketch for maintaining spacing of channel sleeper 680mm c/c for bridge no. 262 of N.

Railway.

Dispensation for fabrication of 45.7m & 30.5m span as per old RDSO drawing given to Manmad

workshop, Central Railway.

Checking of design & drawing of Road over bridge bow string girder span 45.5m for E.C.Rly.


Checking of design & drawing of Road over bridge bow string girder span 51.34m for S.W.Rly.




Checking of design & drawing of Road over bridge bow string girder span 75.5m for N.Rly.








Checking of design & drawing of Road over bridge bow string girder span 51.2m for N.F.Rly.

Checking of design & drawing of Road over bridge Truss type span 115.0m for N.Rly


Checking of design & drawing of Road over bridge bow string girder span 63.0m for N.F.Rly.

Checking of design & drawing of Road over bridge Truss type span 89.89m for E.Rly.

Measures taken to achieve Economy in Design

Revision of Provisions related to crack width in IRS-Concrete Bridge Code (CBC):- The provisions

regarding crack width were very stringent nearly 80% additional reinforcement were required to be

provided, to comply the instructions as compared to reinforcement required for moment/load

considerations.

With revision in crack width requirements (issued in Dec 2014) there will be saving of Crores of Rupees

on year to year basis. (BMRC projected saving of Rs 2.5 cr per km of Metro construction).

Deletion of para 14.9 and 15.9.9 of IRS-CBC having provisions regarding Shrinkage and Temperature

reinforcement in contradiction to distribution reinforcement. Nearly 2-3 tonne additional reinforcement

were required to be provided to follow these provisions in each RCC Box (for two line). These being

redundant have been deleted. RCC Box designs have been modified.

A&C 5 to IRS-CBC (reprint 2014) dated 13.06.2017 issued. Clause 16.4.4.4.5 modified and maximum

spacing of shear stirrups in PSC increased as per reference code i.e. BS: 5400. This will reduce congestion

of shear links as well as quantity of shear reinforcement in PSC.

Newly designed PSC U slab for 12.2 m span weighs only 89t against existing PSC slab of 163t, requires

about 30% less height above bed block level, economical, replaceable with Plate Girders & shall facilitate

continuation of LWR on Bridges.

Additional forces are to be considered for bridges in curved track. Generally bridges are planned in straight

alignment. To achieve economy, separate designs have been issued for twin RCC box i.e. for straight and

curved alignment.

Updation of Codes & Manuals

Various modifications proposed or carried out in codes and manuals with due deliberations are as under-

IRS-Concrete Bridge Code-

Re-print of Indian Railway Standard Concrete Bridge Code (IRS-CBC) (incorporating 13 A&C) – Indian

Railway Standards “Code of Practice for Plain, Reinforced and Pre-stressed concrete for General Bridge

Construction”, (Concrete Bridge Code) was issued in year 1997. Thereafter, 13 correction slips were

issued. Many clauses were modified by A&C 1 and 12, itself. Some clauses were modified by more than

one A&C. Therefore, up in July 2014 and the IRS-CBC code reprinted in September 2014. Soft copy in

PDF format uploaded on RDSO intranet site i.e. 10.100.2.19.

The following corrections slips have been issued/ proposed –

A&C-1 to IRS-CBC (reprint 2014) dated 16.12.2014 issued. Provision of crack width in IRS-CBC were

examined in relation with provisions in other codes. Existing provisions were considered too stringent and

accordingly, modified.

A&C 2 to IRS-CBC (reprint 2014) dated 14.01.2015 issued. Clause 5.4.7 of IRS-CBC. Provision of

coating for concrete bridges re-introduced.

A&C 3 to IRS-CBC (reprint 2014) dated 20.01.2015 issued. Clause 4.5.1, 14.9, 15.9.4.1, 15.9.4.2 & 15.9.9

of IRS-CBC pertains to use Fe-500 grade or higher grade steel for reinforcement.

A&C 4 to IRS-CBC (reprint 2014) dated 15.11.2016 issued. Clause 14.9, 14.9.1 & 15.9.9 pertaining to

provision of shrinkage and temperature reinforcement deleted.

A&C 5 to IRS-CBC (reprint 2014) dated 13.06.2017 issued. Clause 16.4.4.4.5 modified and maximum

spacing of shear stirrups in PSC increased as per reference code i.e. BS: 5400.

A&C 6 to IRS-CBC (reprint 2014) dated 27.07.2017 issued. Clause 7.1.5 modified and use of Stainless

Steel Reinforcement as per IS 16651:2017 permitted in unavoidable circumstances/extreme cases.

A&C 7 to IRS-CBC (reprint 2014) dated 26.06.2018 issued regarding addition of stainless steel

reinforcement also as a type of reinforcement & deletion of provision for application of cement slurry

coating to the reinforcement.

A&C No. 8 to IRS CBC (reprint 2014) dated 23.05.2019 issued regarding HDPE sheathing, stress-strain

curve, Lever arm formula, unit of Relative Profile Vol., Heading of Table B-1and B-2 & figure B1-2.

A&C No. 9 to IRS CBC (reprint 2014) dated 08.07.2021 issued regarding Coatings for Concrete.

Item 1060 regarding Use of Corrosion Resistant Reinforcement was delivered in 84th BSC. The committee

recommended that existing provisions are enough. Only in extremes & coastal areas (upto 30 km from

coastal areas) & unavoidable circumstances Stainless Steel Reinforcement bars may be used.

IRS Steel Bridge Code

IRS Steel Bridge Code - Code of Practice for the Design of Steel or Wrought Iron Bridges Carrying Rail,

Road or pedestrian Traffic, Adopted-1941. Revised-1962, Reprinted-2017 (Incorporating A&C Slip No.1

to 21)

A&C slip no. 22 issued on 25.09.2019 regarding clause no. heading of clause 7.1 to be changed and

existing clause 7.1.1 to be replaced by new clause 7.1.1.

Seismic Code

Indian railway standard code for earthquake resistant design of railway bridges (seismic code) adopted-

2017

IRS Seismic Code adopted in 2017, Revised in 2020 & issued.

Arch Bridge Code

A&C 8 to Arch Bridge Code dated 28.01.2015 issued for Clause 5.3.3 pertaining to Arch Load Testing.

With issue of this A&C, Arches of smaller spans (between 1m to 4.5m) have also been covered under this.

A&C Slip No. 9 to Indian Railway Arch Bridge Code regarding replacement of phrases “Distressed

Bridge”, “IS 1911” by ORN 1 or 2” and “IS 875 (Part 1)” respectively and modification in Permissible

Stresses in Masonry/Concrete Arches has been issued Nov.’2019.

Bridge Rule

Third reprinted in 2014 (Incorporating A&C Slip upto 46)

A&C slip No.47 issued on 22.06.2017 regarding LWR/CWR.

A&C slip No.48 issued on 22.06.2017 regarding provision for design of sub structure for impact loads

from vehicles underneath.

A&C slip No.49 issued on 26.12.2017 regarding modification of clause no. 2.12 - Forces and effects due to

earthquake.

Bridge Sub-Structure & Foundation Code

Second Revision in 2013

A&C slip no. 1 issued on 17.04.2014 regarding minimum clearance for bridge from water level of design

discharge.

A&C slip no. 2 issued on 20.10.2016 regarding deletion of clause no. 7.5.3.

A&C slip no. 3 issued on 22.06.2017 regarding modification of existing clause no. 4.5.9.

A&C slip no. 4 issued on 11.08.2017 regarding clause no. 4.9.2 & 4.9.3.

A&C slip no. 5 issued on 04.10.2019 regarding clause no. 5.12.3, 5.16.2.2 & 5.16.2.3.

A&C slip no. 6 issued on 04.11.2019 regarding inserting of new clause/modification of existing clause

no.1.2, 1.5I(f), 5.12.1,5.12.2(a)(b)(c), 5.12.3,5.12.5 to 5.12.8 & 5.16.2.7(b).

A&C slip no. 7 issued on 11.11.2019 regarding replacement of existing clause no. 5.10.

A&C slip no. 8 issued on 11.11.2019 regarding modification of para 3.1 of Appendix V.

A&C Slip No. 9 to IRS Code of Practice for the Design of Sub-Structures and Foundations of Bridges

regarding Practice of Design Loads for Buildings & Structures and Unit Weight of Building Materials has

been issued in July 2020

Welded Bridge Code

A&C slip no. 1 issued on 15.02.2015 regarding inspection and testing of welded joints.

A&C slip no. 2 issued on 11.07.2018 regarding inspection of steel bridge girder.

Fabrication And Eraction Of Steel Girder Bridges And Locomotives Turntables Fabrication

Specifications

Reprinted in 2018 (Incorporating A&C Slip upto 4)

A&C slip no. 5 issued on 30.08.2013 regarding revision of paint specification, finishing coats and quality

grade designation.

A&C slip no. 6 issued on 02.01.2014 regarding high strength friction grip bolts.

A&C slip no. 7 issued on 02.05.2014 regarding paras 39.2.2, 39.2.3 & 39.2.4.

A&C slip no. 8 issued on 27.08.2014 regarding oiling, painting & metalizing paras.

A&C slip no. 9 issued on 16.01.2015 regarding HFSG bolts.

A&C slip no. 10 issued on 22.03.2016 regarding HFSG bolts.

A&C slip no. 11 issued on 07.05.2019 regarding change in provision to HFSG bolts

Indian Railway Bridge Manual

A&C Slip No. 37 to IRBM regarding “Inspection Performa for PSC/Composite Girders.” has been issued

Oct.’2019.

Specifications

S.No. Specification Detail Date of

Issue

1 Doc No. BS-S-7.5.3.1-

5

Specification for HSFG bolting assemblies with direct

tension indicator washers -3(a) 21.12.2018

2 Doc No. BS-S-7.5.3.1-

8

Specification for Non-Electrolytically Applied Zinc Flake

Coatings for HSFG Bolting Assemblies -3(d) 04.12.2019

3 Doc No BS-S-7.5.3.1-

9

Specification for Higher-Strength Martensitic Stainless

Steel for Bridge and Associated Structural Applications -3(

e)

17.12.2020

Miscellaneous Works

Signal gantry work ( for Trial only)

Stainless steel ROB ( 36 m span for Trial only)

Guideline for ROB checking.

Guideline for TCAS tower checking.

B & S REPORTS

S.No. Report No. Title Month & Year

1 BS-102

GUIDELINES FOR INSPECTION &

MAINTENANCE OF BRIDGE BEARINGS

(Revision 1)

June, 2015

2 BS-105 GUIDELINES ON PIPE LINE CROSSINGS

UNDER RAILWAY TRACK with A&C upto 7

October -2009/ May-

2013/ April-2014/April-

2017/Nov2017

3 BS-106

BROAD GUIDELINES FOR

INSTRUMENTATION OF BRIDGES FOR

RUNNING HIGHER AXLE LOADS (Revision 1)

April, 2010/ Dec 2016

4 BS-110 (R)

Guidelines on Fabrication of Steel Girders for

Construction/Field Engineers (Revision 1) with

Addendum & Corrigendum

Dec-2011/July - 2017

5 BS-111

Guidelines for Use of High Strength Friction Grip

(HSFG) Bolting assemblies on Bridges on Indian

Railways (Revision - 6)

June-2012/ May-2019

6 BS-117

Scour Depth estimation, counter measures &

monitoring at bridge crossing. Guide for

engineers.( Revision 1)

June -2013/2015

7 BS-112 Guidelines for Planning of Road Over Bridges May-14

8 BS-113 Guidelines for Providing Arrangements for Bridge

Inspection Nov-14

9 BS-118 RDSO Guidelines on Seismic Design of Railway

Bridges (Revision 1) January-2015/Nov.-2015

10 BS -119 Guidelines for carrying out Rail-Structure

Interaction Studies for Metro systems (Revision 2) Jan-15

11 BS-120 RDSO Guidelines for Construction of Limited

Height Subway (LHS) by Cut and Cover Method Apr-15

12 BS-121

Guidelines for Provisions of OHE MAST for

Electrification at New and Existing Bridge

Pier/Abutment

A&C no 1 to Report no. BS-121 on Guidelines for

Provisions of OHE MAST for Electrification at

New & existing bridge Pier/Abutment.

Oct-15

July-2020

13 BS-114 Guidelines for Carrying out Rail-Structure

Interaction for Railway Bridges (Revision 2)

November -2015 /

August 2016

14 BS-122 Guidelines of RDSO approval of Planning and

DBR for Important Bridges Nov-15

15 BS-115 Guidelines for Composite Construction including

Stud Shear Connectors (Revision 1) Dec -2015 / April 2016

16 BS-116 R Load Testing of Arch Bridges Jun-17

17 BS-123 Guidelines for checking suitability of existing sub-

structure of bridges for 25T-2008 Loading Aug-17

18 BS-124 Construction of Bogibeel, Rail-Cum-Road Bridge

over River Brahmaputra on N.F.Railway Nov-17

19 BS-125

Method statement for fabrication of 45.7m through

type open web girder for 25t loading drawing no.

B-17181 series

Jun-18

20 BS-126 Guidelines for continuation of LWR/CWR over

ballasted deck bridges on Indian Railways Jul-18

21 BS-127 Guidelines on type of foundations for Railway

Bridges May-19

22 BS-128 Guidelines for carrying out loads deflection tests of

plate, open web and composite girders. Oct-19

23 BS-

111(Rev.6)

Guidelines for use of High Strength Friction

Grio(HSFG) bridge on Indian Railways(Revision

6)

May-2019

24. BS-127(R1) Guidelines on type of foundations for Railway

Bridges June-2020

25. BS-129

Guidelines for 4D(BrIM) based inspection of

Indian Railway bridges using 3D bridge

information model & unmanned aerial system

(Drone).

May-2021

26. BS-130

RDSO guidelines for fabrication Inspection of

RDSO Standards Spans- Composite I-Section Steel

girders for road over bridges(ROBs)

June-2021

Web-based application for approval of GAD’s of ROB’s.

Web based application for online monitoring/approval of GAD of Road over Bridges, being constructed by

NHAI or other State Highway/Government agencies was developed. Data required for planning of

ROB/GAD and Joint Procedure Order, Check list for preparation of GAD, Guidelines for preparation of

GAD’s, Typical GAD and standard design of various spans have been prepared and provided to Railway

Board

Creation of Database of Designs done by Railways for PSC or Concrete Bridges including ROB’s

(other than RDSO drawings)-

Details were collected from Railways and PSU’s in regard to especially designed superstructures (other

than RDSO standard spans) pertaining to Railway Bridges, ROB and

RUBs for different loading standards. Total 449 different span designs have accordingly been compiled.

Railways have been advised accordingly, to take reference, if the same are required on their system.

Testing/Activities performed during 2014-2021

SR.

NO. DATE DESCRIPTION

REPORT

NO.

2014-15

1 May 2014 Non destructive testing of Bridge no. 695, near Memadabad,

Baroda Division, Western Railway BST-23

2 JUL- 2014 Report on non destructive testing of Bridge no. 196, Katra –

Udhampur Northern Railway. BST-24

2015-16

3 MAR-2015 Instrumentation on bridge no.116 over river Chambal,Jhansi

Division, North Central Railway BST-19B

4 MAY - 2015 Report on non destructive testing of Bridge no. 557, Cuttack-

Barang Section, East Coast Railway BST – 25

5 JUN- 2015 Report on non destructive testing of Bridge no. 17,

Ghantikal– Chutang Garh Section, East Coast Railway

BST – 26R

6 JUN - 2015 Report on non destructive testing of Bridge no. 18 Ghantikal–

Chutang Garh Section, East Coast Railway

BST – 27

7 JUN- 2015

Report on non destructive testing of Bridge no. 19 Ghantikal–

Chutang Garh Section, East Coast Railway

BST – 28

8 AUG - 2015 Instrumentation report on stresses induced in members of

30.5 m open web girder during trail assembly.

BST- 29

9 OCT - 2015 Report on non destructive testing of bridge no. 325 near

Titlagarh, Sambalpur division, East Coast Railway

BST- 30

10 MAR- 2016 Non destructive testing of retaining wall of rub at RDSO Manak nagar,

lucknow

BST- 31

2016-17

11 MAY - 2016

Report on non destructive testing of Bridge no. 332 near

Balasore, Kharagpur division, South Eastern Railway

BST- 32

12 NOV - 2016

Instrumentation on rail cum road Bridge no. 7 over river

ganga near patna, East Central Railway

BST- 33

2017-18

13 APR - 2017 Non destructive testing on pier no. - p0/6 & p0/7 near Amausi airport BST- 34

14 MAY - 2017 Vibration testing on Mawaiya bridge, Northern railway,

Lucknow

BST- 35

15 JUL- 2017 Non destructive testing of bridge no. 7 (near Kota), in Bina -

Kota doubling project of WCR.

BST- 36

16 AUG-2017 Instrumentation on bridge no. 132 near Rampur hat, Eastern

railway

BST- 37

17 AUG-2017 Non destructive testing of bridge no.34 (near Kota), in Bina -

Kota doubling project of WCR. BST- 38

2018-19

18 JAN2018 TO

JUN2018

Compressive strength test of 51 no. Paver blocks provided by

TEN/RDSO

Testing for

TEN/

RDSO

19 FEB 2018

Static and impact load test of 6 nos. Of sleepers

recommended by track design Dte. And supplied by M/s

APPL industries ltd. Pune

Referred by

Track

Design Dte.

20 JUN- 2018

Static and impact load test of 6 nos. Of sleepers

recommended by track design dte. And supplied by m/s

calstar sponge ltd. Kolkata

Referred by

Track

Design Dte.

21 JUL- 2018 Guidelines for continuation of LWR/CWR over ballasted

deck bridges on Indian Railways. BS-126

22 JUL- 2018 Non destructive testing on bridge no. 51 in NKE-RXL gauge

conversion project of ECR. BST-39

23 JUL- 2018 Non destructive testing on bridge no. 52a in NKE-RXL gauge

conversion project of ECR. BST-40

24 JUL--2018 Compressive strength test of 06 no. Bricks provided by

TEN/RDSO

Testing for

TEN/

RDSO

25 AUG-2018 Instrumentation scheme on Bogibeel rail-road bridge over

river Brahmaputra NF Railway

26 AUG-2018

Comparison of experimental and theoretical natural frequency

of simply supported beam

( under project vibrational analysis of bridges )

27 SEPT- 2018 NDT on Noney Bridge No. 164 near Imphal NF Railway BST-41

28 DEC- 2018 Instrumentation guidelines for 160 kmph sectional speed on

bridges. BST-42

29 JAN-2019 Instrumentation scheme for structural health monitoring

bridge no. 44 in Jiribam-Imphal Section.

30 FEB- 2019 Scrutiny and observations of drone survey report of Br no. 73

Up, 73 DN, 75 UP, 75 DN & 624 WR

31 FEB- 2019 Scrutiny and observations of drone survey report of Br no.

159 SECR

32 FEB- 2019 Scrutiny and observations of drone survey report of Br

no.47,7,16a &17 ECR

33 FEB- 2019 Scrutiny and observations of drone survey report of Br

no.163, 88, 80 &17 NR

34 FEB- 2019 Scrutiny and observations of drone survey report of 18 UP

&18 DN ER

35 FEB- 2019 Scrutiny and observations of drone survey report of 952 UP

and 952 DN and 766/1 of WCR

36 MAR- 2019 Instrumentation scheme of bridge no.78,89,115,196 of

Bairabi-Sairang, Section, Mizoram of NFR

37 MAR-2019

Static and impact load test of 6 nos.of

sleepers recommended by Track Design Dte. And supplied

by m/s ked sati iron & steel pvt ltd, Kolkata.

2018-19

38 APR-2019 Non destructive testing on washing pit at Mau JN. of NER BST-43

39 MAY-2019 Compressive strength of 22 no of pavers block provided by

for office of Town Engineer/Civil works

Report sent

to concern

Departmant

40 MAY-2019 Analysis of measurement of deflection and frequency

spectrum of bridge no. 249,31,yamuna bridge, NR

41 MAY-2019 Longitudinal force analysis and sorting instrumentation report

for DIR/BS-II

42 JUN-2019 Scrutiny & observation of drone survey report of Bridge no

13CCR & 17ER

43 JULY-2019 Analysis on experimental investigation of evaluation of LF in

PG bridge no. 514 (span5),SERC

44 AUG-2019

Scrutiny of instrumentation scheme for composite girder

bridge and bowstring bridge submitted by MS Set Ponint

Technologies,Greece( local vendor Banket bihari Engg LLP)

45 SEP-2019 Functional requirements for automatic camber measurement

system for yamuna bridge Delhi

46 SEP-2019 Scrutiny & observations of Drone survey report of bridge no

531 ECR

47 DEC-2019 Scrutiny & observation of Drone survey report of bridge no. 0

NFR

48 JAN-2020 Testing scheme for composite girder & Bow string girder

bridges

49 FEB-2020 Guidelines for testing of Railway bridge using drone BS-129

2020-21

50 MAY-2020 Scrutiny & observations of Drone survey report of bridge no

40,73 of NFR

51 AUG0-2020 Testing of bridge no 97A,JJP-TMA gauge conversion project

of ECR

52 AUG-2020 Testing of bridge no 102,JJP-TMA gauge conversion project

of ECR

53 JUN-2020 Testing of bridge no 97A 7 102 JJP-TMA gauge conversion

project of ECR

54 JUL-2020 Compressive strength test of 24 no. concrete cores extracted

from Br. No. 97A ECR

55 NOV-2020

Scrutiny/Analysis of SERC report on comparative evaluation

of international codes on dispersion of LF in railway bridges

under project analysis & management of longitudinal forces

on bridges.

56 DEC-2020 Scrutiny/Analysis of SERC report on review of existing IRS

provisions for dispersion of LF in railway bridges under

project analysis & management of longitudinal forces on

bridges.

57 JAN-2021

Scrutiny/Analysis of SERC report on plate girder bridge no.

514 span 7 & 9 between Abbur & Melpatti in Chennai

division,SR under project analysis & management of

longitudinal forces on bridges

58 JAN-2021

Scrutiny/Analysis of SERC report on prestressed concrete

bridge no. 515 between MAU-RU, chennai

division,SR under project analysis & management of

longitudinal forces on bridges

59 JAN-2021 Non Destructive testing on Br. No. 163 between PFM-PRG,

NR

60 MAR-2021 Guidelines for ROB/Lalkhadan (Truss-superstructure) for

SEC Railway

Total Speed Certificate Issued in last 5 years = 632 nos. , Reports = 124 nos.

INSPECTION

Open web girders fabricated by Railway Workshops and welded girders, fabricated by Railway

Workshops as well as trades, are inspected by RDSO.

The year wise position of inspection of open web and welded girder since year 2014, is given below:

Year Open Web Girders

(t) Plate Girder (t)

Bow String

Girder Total

2013-2014 20875 6187 - 27062

2014-2015 18987 6627 - 25614

2015-2016 25690 4747 - 30437

2016-2017 24109 8098 - 32207

2017-2018 28403 12240 - 40643

2018-2019 35621 17218 - 52839

2019-2020 33567 18277 - 51844

2020-2021 33023.5 18827 15211 67061.5

B&F Units Works

Check list for preparation of Geometric Arrangement of Drawing of Railway Bridges.

Guidelines on types of foundations.

General requirement of Under Water Inspection with RORV technology.

List of DBR’s of Metro Rail Projects scrutinized in B&S Dte RDSO-

SN Name of Metro Type of

DBR Status Remarks

1. Rapid Metrorail Gurgaon

Ltd Viaduct Approved

Vide RB’s letter no. 2012/proj/Rapid

Metro/2/4 date 31.10.2012

2. Hyderabad Metro Rail

Project Viaduct Approved

Vide RB’s letter no.

2012/proj/HMR/30/4 date 11.01.2013

3. Chennai Metro Phase-I Viaduct Approved Vide RB’s letter no.

2012/proj/Chennai/30/6 date


DBR Status Remarks

22.01.2013

4. Bangalore Metro Phase-I Viaduct Approved


2010/proj/Bangalore/Misc dated

23.09.2013

5. Jaipur Metro viaduct Approved


2010/proj/Bangalore/Misc. date

23.09.2013 / 05.09.2013

6. Mumbai Metro One

Private Ltd. (MMOPL) Viaduct Approved


2011/proj/BB/30/5/SoD date

03.01.2014

7. Kochi Metro Viaduct Approved


2013/proj/DBR/Kochi/2/7 date

29.04.2015

8. DMRC Phase- III Viaduct Approved


2013/proj/DMRC/DBR/2/10 date

24.11.2015

9. BMRCL Phase-II Viaduct Approved


2014/proj/DBR/BNC/2/10 date

01.05.2015

10. LMRC Viaduct Approved Vide RB’s letter no.

2014/proj/DBR/2/11 date 15.09.2015

11. Ahmedabad Metro

(MEGA) Viaduct Approved


2014/proj/DBR/BNC/2/710 date

28.08.2015

12. Navi Mumbai Viaduct Approved


2016/proj/MMRP/DBR/2/4 date

07.03.2016

13. Nagpur Metro Viaduct Approved


2015/proj/Nagpur/DBR/2/8 date

28.06.2016

14. Bangalore Metro Phase-I UG Bored

Tunnel Approved


2015/proj/Bangalore/Misc dated

04.04.2016

15. Chennai Metro Phase-I Bored

Tunnel Approved


2017/proj/CMRL/DBR/2/1 date

10.03.2017

16. Nagpur Metro Elevated

Station Approved


2015/proj/Nagpur/DBR/2/8 dated

05.04.2017

17. Noida Metro Viaduct Approved


2016/proj/DBR/Noida/2/10 date

07.09.2017

18. Bangalore Metro Phase-

II (A&B) Viaduct Approved


2017/proj/BMRCL/DBR/2/2 dated

06.11.2017

19. Kolkata Metro East West

Corridor Viaduct Approved


2018/Proj/KMRCL/DBR/30/10 dated


DBR Status Remarks

20.08.2018

20. NCRTC (Delhi-Meerut

Corridor) Viaduct Approved


2018/proj/NCRTC/DBR/30/5 dated

22.06.2018

21.

Scrutiny of Design Basis Report for Bored Tunnel of Jaipur Metro Rail Corporation

Limited (JMRCL) done and remarks sent to UTHS Directorate on 10.10.2018 and this

DBR is approved by Railway Board vide letter no. 2011/Proj./Jaipur/2/1 dated

20.06.2019.

22.

Scrutiny of Design Basis Report for Viaduct of Mumbai Metro Rail Project of MMRDA

done and remarks sent to UTHS Directorate on 08.08.2018 and this DBR is approved by

Railway Board vide letter no. 2018/proj/MMRDA/DBR/30/13 dated 13.08.2019.

23.

Scrutiny of Design Basis Report for Viaduct of Pune Metro Rail Project done and

remarks sent to UTHS Directorate on 27.05.2019 and this DBR is approved by Railway

Board vide letter no. 2019/Proj/MAHA-Metro/PUNE/DBR/30/11 dated 26.08.2019.

24.

Scrutiny of Design Basis Report for Viaduct of Kanpur Metro Rail Project Of LMRC

done and remarks sent to UTHS Directorate on 11.09.2019 and this DBR is approved by

Railway Board vide letter no. 2019/Proj/KANPUR/DBR/30/21 dated 03.10.2019.

25.

Scrutiny of Design Basis Report for Bored Tunnel of Kolkata Metro Rail Corporation

Ltd (KMRCL) for East – West Metro Corridor done and remarks sent to UTHS

Directorate on 29.11.2019 and this DBR is approved by Railway Board vide letter no.

2018/Proj/KMRCL/DBR/30/10 dated 06.02.2020

26. Guidelines on the Technology of 3-D Scanning of River Beds were issued to Zonal

Railways in May’2020. (BSC item No.1083)

27.

Scrutiny of Design Basis Report for Elevated Stations of NCRTC done and remarks

sent to UTHS Directorate on 23.04.2020 and this DBR is approved by Railway Board

vide letter no. 2018/proj/NCRTC/DBR/30/5 dated 29.05.2020.

28.

Scrutiny of Design Basis Report for Bored Tunnels of NCRTC done and remarks sent to

UTHS Directorate on 03.07.2020 and this DBR is approved by Railway Board vide letter

no. 2020/proj/NCRTC/DBR/UG/30/3 dated 30.07.2020.

List of Model DBR’s drafted

SN Type of DBR Status Remarks

1. Viaduct Approved Vide RB’s letter no.

2015/proj/Model/DBR/2/2 dated 15.01.2018

2. Elevated Station Approved Vide RB’s letter no. 2015/proj/Model/DBR/2/2 dated

21.06.2016

3. Bored Tunnel Approved Vide RB’s letter no. 2015/proj/Nagpur DBR/2/2 dated

05.04.2017

EOI for Ballastless Track on viaduct/tunnels on Indian Railway: For developing a list of System Providers

for Ballastless Track on Viaduct/ Tunnels on Indian Railways, Railway Board has advised to call EOI.

DBR of Important Bridges Approved

SN Rly. Date of

Approval

Br.

No./River

Proposed Span

arrangement Section

Span

Approved Remarks

1 WCR 9/10/2014 766/1,Narma

da

1x18.30+14x45.70m,U-

type PSC&OWG

Budni-

Hoshangaba

d,

Same as

proposed

Narmada bridge

on 3rd line. Span

arrangement is

similar to DN line

bridge at a

distance of 25m.

2 NFR 1/28/2015 40/Teesta 20x45.70m,OWG

New

Jalpaiguri-

New

Coochbehar

Same as

proposed

New bridge for

doubling project

at 40m

downstream of

existing rail

bridge with

similar span

arrangement.

3 NFR 4/13/2015 116/Torsa 9x45.72m OWG

New

Jalpaiguri-

New

Coochbehar

Same as

proposed

New bridge for

doubling project.

Span arrangement

is similar to the

existing DN line

bridge at 30m.

4 SCR 5/29/2015 361/Ashna 3x18.30m+7x24.40m

PSC MUE-PBN

Same as

proposed

New bridge

doubling work at

25m downstream

of existing bridge

with similar span

arrangement.

5 SCR 9/21/2015 340/Purna 2x17.33m+11x17.8m

PSC MUE-PBN

Same as

proposed

New bridge

doubling work at

25m downstream

of existing bridge

with similar span

arrangement.

6 SCR 10/8/2015 223/Kundu 9x30.5 OWG Nandyal-

Yerraguntla

11x18.30

PSC

Bridge for new

line and waterway

was kept

considering

highway bridge in

upstream.

7 WCR 3/10/2016 55/Kalisindh 7x45.7m,OWG RAJ-Parvati Same as

proposed

In connection

with construction

of New BG Rail

line

8 NCR 3/11/2016 1275/2,Yamu

na 10x76.2m,OWG

Bhimsen-

Jhansi at

Kalpi

Same as

proposed

New bridge for

doubling project.

Span arrangement

SN Rly. Date of

Approval

Br.

No./River

Proposed Span

arrangement Section

Span

Approved Remarks

is similar to the

existing DN line

bridge.

9 WCR 4/13/2016 Tawa River

Bridge 8X61.m,OWG

Sontalai-

Bagratawa

same as

proposed

New bridge for

doubling project.

Old bridge is

610m in the

upstream.

10 SCR 6/27/2016 725/1, Purna

river 7X45.7 OWG

Akola-

Kkandwa

Same as

proposed

New bridge in

20m downstream

of MG bridge

with

same configurati

ons

11 NER/

RVNL 11/4/2016 Ganga /GCT

2x43.5+11x85.0,OWG(

Rail cum Road Bridge)

Gazipur-

Tarighat

Same as

proposed

New line rail cum

road (2BG rail

and 3 lane road)

bridge at 45m

upstream of

existing road

bridge. Span

arrange is same as

road bridge. TAC

was constituted

by RVNL for this.

12 NR/

RVNL

11/22/201

6 Rishikesh

10.x30.5, composite

girder

Rishikesh-

Karnaprayag

12X24.4,

composite

Girder

This bridge is for

new line, initially

proposed with

span arrangement

of 10X30.5m

which was

revised on

economical

consideration

as12X24.4m.

13 WCR 12/23/201

6 98/Sone 16x45.7 OWG mOWG Rewa-Sidhi

Same as

proposed

This bridge is for

new line across

Sone river at

12.5km

downstream and

11 km upstream

of existing road

bridge.

14 ECoR 12/29/201

6 343/Tel river

20x30.5m composite

girder

Vizianagara

m-Titalgarh

Same as

proposed

In connection

with 3rd line with

similar span

arrangement of

UP line(50m

downstream) and

SN Rly. Date of

Approval

Br.

No./River

Proposed Span

arrangement Section

Span

Approved Remarks

DN line(20m

downstream) line

bridges.

15 NR/

RVNL 1/30/2019 09/Alaknanda

15X30.5m non-standard

Composite girder

Rishikesh-

Karanprayag

As

Proposed

Bridge for new

line project. Non-

standard girder

was approve on

the basis of Site

specific spectrum

study.

16 NER/

RVNL

Complian

ce awaited 111/ Ganga

24X76.2m Non standard

OWG accommodating

two BG tracks

Jhusi-

Daraganj

As

Proposed

The bridge is

planned for

double line in

between two

existing bridges

in Upstream and

Downstream

350m apart. The

alignment of

proposed bridge

is oblique and

span arrangement

is dissimilar w.r.t.

both the bridges.

RDSO has

accepted the DBR

on 17/01/2019

subjected to

compliance of the

suggestion to

conduct model

study of the river

and two separate

standard OWG

for UP and DN

lines.

17 NR/

RVNL

Under

scrutiny 08/Alaknanda

3X90m Non-standard

OWG

Rishikesh-

Karanprayag

As

Proposed

Bridge for new

line project with

Non-standard

girder. DBR is

under scrutiny.

18

Approval of Design Basis Report of Important Br. No 08 (3X90m) over River Alaknanda approved

in connection with Rishikesh - Karanprayag new BG Rail line project, Northern Railway

(June’2019).

19 Approval of Design Basis Report of main bridge of Rampur-Dumra-Tal-Rajendrapul Addition

Bridge and south end approach for doubling (Oct’2019)

20 Approval of Design Basis Report of five important Railway Bridges approved in c/w Bhanupali-

Bilaspur-Beri new B.G. Rail line, Northern Railway (Nov’2019).

SN Rly. Date of

Approval

Br.

No./River

Proposed Span

arrangement Section

Span

Approved Remarks

21 Approval of Design Basis Report of Important Bridge No. 340 across Farakka Feeder Canal

approved. (Dec’2019).

22

DBR of Bridge No. 111 (Jhusi Bridge) of Varanasi Division of NER was approved by RDSO with

observations vide RDSO letter No. CBS/DBR/NER/RVNL/Imp. Bridge no. 111 dated 17.01.2019.

The matter was subsequently discussed in Railway Board and Railway Board, decided that fresh

meeting of TAG for the bridge should be held having two more members as CPD(BW)-NER and

ED/B&S-RDSO and TAG recommendations covering all issues should be submitted to Board for

approval. The DBR has been scrutinized and it is found that the pertinent recommendations of TAG

have been incorporated in the DBR. Further RDSO considers some modifications as necessary. In

order to save the time, corrections have been made at RDSO itself and sent to RB on dated

26.02.2021. Further Railway Board advised NER vide letter dated 07.07.2021 that DBR may be

approved by CAO/C/NER.

23

Design Basis Report of Ganga Rail Bridge (Bridge No. 06) in connection with 125 km long Broad-

Gauge New Rail Link between Rishikesh – Karanprayag, Northern Railway was scrutinized and

approval communicated to NR. (Dec’ 2020)

24 Design Basis Report of Important Railway Bridge No.15 (Gauchar Bridge) between Rishikesh –

Karanprayag, Northern Railway was scrutinizedand approval communicated to NR. (Dec’ 2020)

BRIDGES AND STRUCTURES DIRECTORATE

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