Monroe Street Bridge Replacement Design

Monroe Street Bridge Replacement
Project Overview: 
The Monroe Street Bridge is a three-span overpass supporting four New Haven mainline tracks and two sidetracks, which service Metro-North Railroad’s Danbury Line. It is supported by stone masonry abutments and built-up steel piers supported by stone masonry pedestals. The primary objective was to replace the superstructure and piers and to improve the existing roadway vertical clearance.
McLaren's Role: 
McLaren was responsible for complete reconstruction design of the bridge, which was complex due to superstructure height limitation. The three-span structure was replaced with a single-span steel structure spanning approximately 72 feet. A finite element model of the entire superstructure was performed. Longitudinal stringers with moment connections were provided in addition to the thru-girders to share the loads. An elaborate construction staging scheme was performed to maintain three main tracks in operation at all times. Reconstruction was accomplished in multiple stages to minimize the impact on railroad traffic.
Service: 
Bridge Inspection
Service: 
Bridge Design
Service: 
Roadway Design
Service: 
Construction Administration
Location: 
Norwalk, Connecticut
Client: 
ConnDOT
Project Type: 
Bridge Replacement
Role: 
Prime
Contract Period: 
1998-2011
Construction Cost: 
$5,000,000
Image: 
Monroe_Bridge_2.JPG
Image: 
Monroe_Bridge_3.JPG
Image: 
Monroe_Bridge_4.jpg

Location
Norwalk, Connecticut

Client
ConnDOT

Our Role
Prime
Project Type
Bridge Replacement

Contract Period
1998-2011

Construction Cost
$5,000,000
Services
Bridge Inspection
Bridge Design
Roadway Design
Construction Administration