Mt. Washington Transit Tunnel Track Replacement (2025)

Pittsburgh Regional Transit closed the Mt. Washington Transit Tunnel from February through December 2025 to replace more than 1,000 feet of light-rail track, the roadway, and overhead electric lines inside the tunnel between South Hills Junction and Station Square Stations just south of downtown Pittsburgh.

During construction, PRT identified a design issue that required the adjustment of the newly installed sections of track. Following a refinement of the original design, the tracks at the inbound end of the tunnel were adjusted to meet the precise operational and safety standards.

The tunnel serves as a key connection between South Hills Junction and Station Square Station and is the only tunnel in the country shared by both buses and light-rail vehicles.