M4 J33 IWA Scheme Overview and Task List R1

M4 Junction 33 Capacity Improvement IWA Scheme Overview and Task List

Scheme Overview

The M4 Junction 33 links the M4 motorway, a dual three lane motorway (120kph) with the A4232, a dual two lane trunk road (120kph).

The junction is to the West of Cardiff in South Wales and is the strategic western route into Cardiff and designated route to Cardiff Airport.

Junction 33

Junction 33


The junction struggles with capacity issues and, as part of the South Wales Trunk Road Agent (SWTRA) Framework, we have been commissioned to investigate opportunities to improve these problems, develop the detailed design and support a contractor in achieving an opening of the scheme by the end of March 2015.

M4 Westbound Carriageway Looking East

Junction 33


M4 Westbound Carriageway Looking West, start of diverge for Junction 33

A4232 Southbound Carriageway Looking South

A4232 Southbound Carriageway Looking North


Early stage assessment work has identified options to provide a dedicated lane for vehicles leaving the M4 from the east to travel south on the A4232 and for vehicles travelling north on the A4232 joining the M4 in a westerly direction. It is believed that these improvements can be delivered within the proposed timescale for road opening assuming a zero landtake and an alternative option that would require land acquisition by negotiation. All options art likely to include some form of retainment. These options are shown in the following plans;

B1844701/TO075/D/012 Western Option B1844701/TO075/D/035 East Quadrant 1 in 2 Slopes B1844701/TO075/D/052 East Quadrant Varying Slopes up to 70o

These drawing are contained in Appendix A and are at outline stage that will be liable to change as the scheme develops.

Task List

The following list identifies those areas of project delivery that we currently believe will require ID support in the delivery;

MX - Alignment Design

Design Specification

- To be done to the Manual of Contract Documents for Highway Works and cover the following series;

• 100 Series Preliminaries Numbered Appendices • 200 Series Site Clearance Numbered Appendices • 300 Series Fencing Numbered Appendices • 400 Series Road Restraint Systems Numbered Appendices • 500 Series Drainage and Service Ducts Numbered Appendices • 600 Series Earthworks Numbered Appendices • 700 Series Road Pavement Numbered Appendices • 1100 Series Kerbs, Footways and Paved Areas Numbered Appendices • 1200 Series Traffic Signs Numbered Appendices • 1300 Series Road Lighting Columns Numbered Appendices • 1400 Series Electrical Works Numbered Appendices • 1500 Series Motorway Communications Numbered Appendices • 1600 Series Structures Numbered Appendices • 2500 Series Special Structures Numbered Appendices • 3000 Series Landscape and Ecology Numbered Appendices

AutoCAD

- Production of drawings to support design specification Traffic Modelling

- Updating of existing modelling to include output from CCTV survey Drainage Modelling

- Using WinDes by Microdrainage to model existing and proposed drainage


KeySigns - Production of sign face details and post and foundation design

KeyLines

- Production of lining design ArcGIS

- Environmental Plans Slope Stability

- Analysis of earthworks slopes Structural Design

- Design of any retaining structures and/or modification to existing structures - Application of Eurocodes may be required

All design must be compliant with the requirements of the Manual of Contract Documents for Highway Works (MCDHW) and the Design Manuals for Roads and Bridges (DMRB).

The delivery of the project will be managed in accordance with the requirements of the SWTRA Integrated Delivery Briefing Document attached for information.

SWTRA - Integrated Delivery Briefing Docu


Appendix A

Drawings

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ST15

ST151

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ST069

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ST82

ST81

ELG

Existing slope

Highway

Boundary

1

2

Strengthened Earth Option 6

VRS

Benching

Class 1 Selected

Granular Fill

O

O= 30°

ELG

Existing slope

Highway

Boundary

1

2


VRS

Benching

Class 1 Selected

Granular Fill

O

O

= 30° to 45°

T/S Retention Mat

Secondary Geogrids

ELG

Existing slope

Highway

Boundary

1

2


VRS

Benching

Class 1 Selected

Granular Fill

O

O= 45° to 70°

T/S Retention Mat

Primary Geogrids

This drawing is not to be used in whole or part other than for the intended

purpose and project as defined on this drawing. Refer to the contract for full

terms and conditions.

Drawing status

Drawing number

Scale

Drawing title

DO NOT SCALE

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Apprv'dPurpose of revision

Rev Rev. Date Drawn Check

Newby House, Neath Abbey Business Park, Neath, SA10 7DF

Tel:+44(0)1792 812333 Fax:+44(0)1792 817447

SWTRA CENTRAL AREA

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South Wales Trunk Road Agent

Asiant Cefnffyrdd De Cymru

Managing and Improving Motorways and Trunk Roads through South Wales

Rheoli a Gwella'r Traffyrdd a'r Cefnffyrdd yn Ne Cymru

SWTRA TASK 075

M4 JUNCTION 33 CAPACITY STUDY

STAGE 2 APPRAISAL

OPTION PC3

DRAFT

1:1000@ A1

B1844701/TO075/D/012 D0

D0 20-06-13DRAFT

GE JT JT RHT

© Crown Copyright and database right 2012. Ordnance Survey 100021874.

Welsh Government.

© Hawlfraint a hawliau cronfa ddata'r Goron 2012. Rhif Trwydded yr Arolwg

Ordnans 100021874.

Continued below

Continued from

above

Strengthened Earthworks Option 7









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Widening for proposed

Direction Sign

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Caerdydd (Gn)

A4232

Services

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Diverge 7.3m Carriageway

1m H/S

2m Verge2.5m Verge

Proposed:

0.2m H/S

6m Carriageway

0.2m H/S

5.725m Verge2.5m Verge

Existing:

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Proposed filter drain/ batter drain

to be employed through widening

0.6 0.6

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0.75 x 0.8 (W2)= 0.6m Set back to rear of through visibility envelope 7.2m Segregated Left Turn Lane Roundabout Entry Lanes

0.75 x 0.8 (W2)= 0.6m

1

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7.2m Segregated Left Turn Lane

11.444

5

3.534

5

0.75 x 0.8 (W2)= 0.6m




Drawing status

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Tel:+44(0)1792 812333 Fax:+44(0)1792 817447

SWTRA CENTRAL AREA

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SWTRA TASK 075


EASTERN QUADRANT

TD 51 COMPLIANT WITH 1 IN 2 SLOPES

DRAFT

Plan: 1:1000 Sections: 1:200

B1844701/TO075/D/035 D0

D0 16-09-13DRAFT

FP JT JT RHT


Welsh Government.


Ordnans 100021874.

Unchecked

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Widening for proposed

Direction Sign

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Cardiff (W)

Caerdydd (Gn)

A4232

Services

0.6

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0.6

0.6

1m H/S

Diverge 7.3m Carriageway

1m H/S

2m Verge2.5m Verge

Proposed:

0.2m H/S

6m Carriageway

0.2m H/S

5.725m Verge2.5m Verge

Existing:

1

2

1

2

0.6 0.6

Proposed filter drain/ batter drain

to be employed through widening

7.736

0.75 x 0.8 (W2)= 0.6m Set back to rear of through visibility envelope 7.2m Segregated Left Turn Lane Roundabout Entry Lanes

0.75 x 0.8 (W2)= 0.6m

7.2m Segregated Left Turn Lane

3

1

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1

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1

1.2

1

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0.75 x 0.8 (W2)= 0.6m

5.865

5.077




Drawing status

Drawing number

Scale

Drawing title

DO NOT SCALE

Rev




Tel:+44(0)1792 812333 Fax:+44(0)1792 817447

SWTRA CENTRAL AREA

Rev'd

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SWTRA TASK 075


EASTERN QUADRANT

TD 51 COMPLIANT WITH SLOPES UP TO 70°

DRAFT

Plan: 1:1000 Sections: 1:200

B1844701/TO075/D/052 D0

D0 16-09-13DRAFT

FP JT JT RHT


Welsh Government.


Ordnans 100021874.

M4 J33 IWA Scheme Overview and Task List R1

Documents

Transcript of M4 J33 IWA Scheme Overview and Task List R1