64844 | 30th Street Bridges (6) Over Amtrak's Northeast Corridor Rail Lines (West Philadelphia)

This project involves the rehabilitation of complex structures around 30th Street Station and over Amtrak’s Northeast Corridor rail lines in the City of Philadelphia. There are six structures within the project limits. The work area includes Market Street and Little Market Street (S.R. 3010 and S.R. 3026), Arch Street (S.R. 3030), and Chestnut (S.R. 0003) between 30th Street and Schuylkill Avenue West. It also includes 30th St. Street (S.R. 3026) between Arch Street and Market Street. The roadways around the station are built on a structure to accommodate the railroad tracks (AMTRAK, SEPTA) and highway (I-76, Schuylkill Expressway) that pass underneath. Also, no changes to the horizontal or vertical geometry or clearances are anticipated. This affected section of Market Street is on the NHS.
The purpose of the project is to maintain and enhance safe and efficient transit to serve the existing and future transportation needs associated with the highly urban center of Philadelphia, PA. Areas of structural deterioration include deck joints, structural members with corrosion and fatigue cracks, and road deck calcification. Painting of existing structural steel is included. Extensive coordination with Amtrak is required for the substructure repairs between the tracks. The roadway surface and drainage capabilities will be improved on Market, Little Market and Chestnut Streets. On Arch Street and 30th Streets, surface improvements have previously been completed under a separate project and this project will only address rehabilitation of the substructures for these structures.
Traffic will be maintained during construction using staged construction methods. The deck configuration for the Market, Little Market and Chestnut Street structures entails a sub-deck as part of the encasement of the steel substructure. Membrane waterproofing and a concrete protective layer are on top of the sub-deck. Above the concrete protective layer is varying height fill, a level of concrete and a bituminous overlay. The project only entails milling and overlaying the bituminous in the roadway with full depth replacement at the joints and sidewalks.
The project is located in a rolling urban setting with a variety of industrial, commercial, and transportation land uses immediately adjacent to the project area. The area has a high level of pedestrian traffic to and from 30th Street Station and public bus stops. For Market and Little Market Streets, pedestrian enhancements will be incorporated as part of the City of Philadelphia’s planned “Station Square” concept between 30th Street Station and the IRS Building (formerly housing the Post Office).

No milestones are available for this project.