Fourth street bridge

The Federal Highway Administration awarded the Pennsylvania Department of Transportation $2 million under the Surface Transportation Block Grant Program (CFDA 20.287) on December 8, 2025, for the replacement of the Fourth Street Bridge (SR 7421, Bridge Key 37005) over Norfolk Southern Railroad in North Irwin Borough, Westmoreland County.

The project involves demolition and replacement of the existing structure with a new single-span steel multi-girder bridge constructed within the same approximate footprint. Work is performed in Pennsylvania, with an ultimate completion date of April 28, 2029. The STBG program provides flexible funding for States and localities to preserve and improve conditions and performance on Federal-aid highways, bridges, and tunnels. The $2 million obligated represents Pennsylvania Department of Transportation's allocation for this locally owned urban bridge replacement, one of hundreds of concurrent infrastructure projects the agency administers as Pennsylvania's primary federal transportation grant implementor.

Project description

This project is the replacement of the structure and other miscellaneous construction, as indicated on the approved drawings included in the bid package, for SR 7421 (fourth street) section FSB over norfolk southern railroad in north irwin borough, westmoreland county. The proposed structure will consist of a new single-span steel multi-girder bridge that will be constructed within the same approximate footprint as the existing structure. Bridge key 37005 urban local, locally owned fourth street over norfolk southern railroad north irwin borough, westmoreland county bridge replacement