JKRAJEWSKI_ODOT2014_Light Rail Presentation

OREGON DOT BRIDGE SEMINARMAY 13-14,

2014STATE OF THE ART DESIGN OFLIGHT RAIL STRUCTURES

HART TRANSITJoe Krajewski, PE - HNTB

OUTLINE1. Introduction2. Green Line Extenstion, MBTA, Boston – Medford, MA3. West Ohau – Farrington – Honolulu, HART, Hawaii4. Summary

STATE OF THE ART DESIGN OF LIGHT RAIL STRUCTURESODOT BRIDGE SEMINAR, MAY 13-14, 2014

1. INTRODUCTIONLight Rail Aerial Structures are being planned for, designed and built all around the country. Why? Current trend towards alleviating congestion in urban areas. There is a recognition that adding travel lanes to highways is

inadequate

More Lanes ≠ Less Congestion Reduction in greenhouse gases to combat global warming. Economic Development. Environmental Mitigation Method. Funding Source for larger Transportation Project. INTERMODAL APPROACH TO SOLVING ALL OF THE ABOVE


1. INTRODUCTION



1830 – Boston & Lowell Railroad. Steam Locomotives.Green Line “D” Branch to Riverside still in use

today.

1853 – Cambridge Railroad & Street CarsCentral Square to Harvard to the West End

1897 – First Subways in the CountryTremont Street Subway precursor of the Green

LineMain Line Elevated precursor of the Orange Line

MBTAMassachusetts Bay Transportation

Authority


TODAY- 5 Subway Lines – Green,

Orange, Red, Blue & Silver- Connects 14 Cities &

Towns around Boston- Commuter Rail (MBCR)

that services 145 Cities & Towns from Rhode Island to New Hampshire.

- Ferries- Covers 1,000 square miles- Services Millions

MBTA


- 4.5 Mile extension of the Green Line from Somerville to Medford (the campus of Tufts University)- 7 New Stations- 8 New Highway Bridges- Vehicle Maintenance Facility- 3000 foot long Emergency Egress/Pedestrian – Bikeway Viaduct- 5 Miles of Retaining Walls- Over 2 Miles of Light Rail ViaductAll in a densely packed urban area

MBTA – GREEN LINE EXTENSION


Estimated Cost $1.5 BillionMandated by an Act of Congress as the Main Congestion/Air Pollution Mitigation & Part Funding for the “Big Dig”.Failure of Massachusetts to build the project within a specified time limit would result in the Commonwealth being forced to pay back Billions in “Big Dig” funding.

Project TeamCM/GC Alternative Project Delivery Method (1st in the Northeast)Design Engineers = HNTB/AECOM & 39 Sub ConsultantsPM = HDR/Gilbane/KleinfelderOR = Hatch Mott MacDonald (Mandated by Commonwealth Law)Contractor = J.F. White/Skanska/Kiewit

Project ScheduleFinal Design Started Summer 2012First Phase of Project Scheduled to go into Operation in 2018Project Completion 2020

MBTA – GREEN LINE EXTENSION


7 Viaducts Structural Steel Superstructure Concrete Deck Ballasted Track CWR – Continuous Weld Rail Concrete PiersDrilled Shafts and Mini PilesF’c = 4.3 ksiRebar = Grade 60

MBTA – GREEN LINE EXTENSION - VIADUCT

LECHMERE

MEDFORD BRANCH

YARD LEAD FLYOVERUNION SQ EB

UNION SQ WB

UNION SQ YARD LEADEEV/COMMUNITY PATH

AASHTO 17th Edition LFD AASHTO LRFD – EEV/Community Path Super.Revenue Train – 4 Green Line Cars #7’s & #8’sFuture Revenue Train = #9’s with Level Boarding Maintenance Train – Diesel Engine + 3 Ballast CarsOverhead Catenary Electrical PowerOperating Speed = 50 MPH (Design 60 MPH)


5 Spans – Twin Trapezoidal Steel Boxes (FC)6 Spans – 2 Single Trapezoidal Steel Boxes (FC)3 Spans – Plate Girders Continuous & Integral with Pier CapsGrade 50 – Painted – Sea Foam Green1,800 ft. longThe Lechmere Viaduct & Station are the Signature portion of the entire GLXAesthetic is everything for this Viaduct

MBTA – GREEN LINE EXTENSION – LECHMERE VIADUCT


MBTA – GREEN LINE EXTENSION – LECHMERE VIADUCT


MBTA – GREEN LINE EXTENSION – VIADUCTS

For the remainder of the Viaducts Aesthetics is not important since the Viaducts span a Rail Road Yard, Industrial Area and the backs of Parking Garages.The Viaducts form an interchange between the Medford Main Line, the Union Square Branch and the Railroad yard.The EEV/Community Path Viaduct serves as an Emergency Egress off the tracks and a connecting link between the Boston Bikeway System and the Community Path System to the north.



Plate Girders – Grade 50 Weathering Steel with painted endsTangent spans are simple spans except the EEV/Community path spansCurved girder spans are 2 span continuous


November, 2010 – Voters Approved a Charter to create a semi- autonomous public transit authority (HART).

July 1, 2011 – HART Began Operations – But no trains or rail in place.

2019 – Estimated Date of Start of actual train service.

HARTHonolulu Authority for Rapid Transit


Hawaii recognized that adding more lanes to their highways would not relieve traffic congestion that is among the worst in the Country.Traffic is Congested on the H-1 from 4:00 AM to 7:00 PMHawaii is going Intermodal by creating the Light Rail System in conjunction with Rehabbing & Replacing portions of their highway system to improve the lives of all citizens and sustain the natural beauty of the islands.

HART – Honolulu Rail Transit Project


HART – Honolulu Rail Transit Project20 Miles of Elevated Guideway21 New Stations4 Park and Ride GaragesVehicle Maintenance Facility


Estimated Cost $5 BillionDB Alternative Delivery Method in Multiple ContractsWest Oha’u – Farrington Hwy & Kamehameha Hwy ContractsDesign Engineers = HNTB/FIGG/Shannon Wilson/URSOR = CH2M Hill/PGHWongContractor = Kiewit

Project ScheduleFinal Design Started Summer 2011First Phase of Project Scheduled to go into Operation in 2019Project Completion 2022


- 20 Miles of Elevated Guideway (Viaduct)

- 21 New Stations- 4 Park and Ride Garages- Vehicle Maintenance FacilityAll in a densely packed urban area


HART – Honolulu Rail Transit ProjectSegmental Concrete Superstructure Concrete Deck Direct Fix Track for Level Boarding (ADA) CWR – Continuous Weld Rail Concrete PiersCIP, Precast, Prestressed, Post-TensionedDrilled ShaftsF’c = 6.5 ksiRebar = Grade 75 & 80AASHTO LRFD 2009 Revenue Train – 4 LMV CarsMaintenance Train – 1 HMV Car3rd Rail Electrical PowerOperating Speed = 55 MPH (Design Speed = 66 MPH)


HART – Honolulu Rail Transit ProjectAESTHETICS IS CLUSTERED AROUND EACH STATION & HIGH VISIBILITY LOCATIONS

8 FOOT DIAMETER COLUMN AESTHETIC DETAIL


HART – Honolulu Rail Transit ProjectAESTHETICS IS CLUSTERED AROUND EACH STATION & HIGH VISIBILITY LOCATIONS



“L” PIER STATION PIER

Aesthetics Is Causing Structural Design Challenges


STATE OF THE ART DESIGN OF LIGHT RAIL STRUCTURES

SUMMARY1. Light Rail Structures are more than just structures they are systems components.

2. They are Signature Structures because impact a Community Significantly.

3. They are part of an Intermodal Transportation System without being connected or carried directly by Highway Bridges or even near Highways.

a) Note: GLX and HART were relied upon for funding Highways, but never were connected to those Highways except as part of an overall strategy to:

1. Reduce Congestion2. Reduce Air pollution3. Provide Economic Development4. Make the Communities they are in more livable.

b) Funding came from the FTA and FHWA4. Design

a) AASHTO, but some AREMAb) Stray Current, Terrorism, Hazards, . . . Part of the structural design process.c) Aesthetics complicates the Structural Design so do Stations.


STATE OF THE ART DESIGN OF LIGHT RAIL STRUCTURES

SUMMARY

QUESTIONS ?????

HART TRANSIT

JKRAJEWSKI_ODOT2014_Light Rail Presentation

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