Bridges to Prosperity McNary Bergeron

PROJECT HIGHLIGHTS: Q BRIDGE - NEW HAVEN, CONNECTICUT

The new Pearl Harbor Memorial Bridge (commonly known as Q-Bridge because it crosses the mouth of the Quinnipiac River at New Haven Harbor) is part of a $2.2 Billion effort by the Connecticut Dept. of Transportation to relieve congestion and upgrade aging infrastructure in New Haven. The bridge is part of the heavily traveled I-95 northeast corridor between New York and Boston. The original Q-Bridge was built in the late 1950's for 40,000 vehicles per day, less than a third of the 140,000 vehicles the bridge currently sees each day. The new Q-Bridge will be a signature structure for the State of Connecticut and will be the first extradosed bridge constructed in the United States. Each of the two bridges will have two planes of stays that fan out as the bridge changes width from one end to the other. The new cast-in-place bridges will eventually carry 5 lanes of traffic in each direction.

Our Role

McNary Bergeron & Associates is providing construction engineering services including:
- Modifications to and standardization of segment details
- Integrated shop drawings for cast-in-place superstructure segments

Construction Method and Specifications

Construction Method and Specifications:
- cast-in-place segmental using form travelers
- multi-cell box segments that vary in width from 29.2m to 32.8m
- two extradosed bridges with 32 stays in two planes at each tower for each bridge (128 total stays)
- 157m main span, 76m backspans

Owner

Connecticut DOT

Contractor

Walsh/PCL Joint Venture

Designer

URS

Total Contract Value

$417M

Timeline

2009-2015

Data Sheet (pdf)

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