The Mon/Fayette Expressway Project from PA Route 51 to Interstate 376 would extend the Mon/Fayette system north from Route 51 in Jefferson Hills in southeastern Allegheny County to two interchanges with the Parkway East (I-376) – one in Monroeville/Penn Hills and one in the City of Pittsburgh near Second Avenue and Bates Street. The purpose of this project is to provide safe, efficient transportation improvements that will complement the regional transportation network, enhance the accessibility to both social services and industrial development sites located along the Monongahela River Valley, and to relieve traffic on the congested local roadways in southeastern and eastern Allegheny County.

The PA Route 51 to Interstate 376 Project was issued environmental clearance in December 2004 by the US Department of Transportation’s Federal Highway Administration (FHWA). The Record of Decision (ROD) granted by FHWA designated the North Shore Alternative as the Selected Alternative. Since then the project team has completed much of the final design activities. However, without needed funds for property acquisition and construction, further advancement of the project has been paused. One method of funding being explored by the PTC is Public-Private Partnerships, or “P3s” (http://www.paturnpike.com/P3/p3_public.aspx). Traditional funding methods would require the project to be added to the region's Transportation Improvement Plan (TIP), which identifies the priority highway and transit projects for 10 counties in southwestern Pennsylvania. Currently, the project is not included on the TIP.

Total project costs for the Selected Alternative are estimated at $1.9 billion.