I-79 Widening, Bridges and Bridgeville Interchange Reconfiguration

Project Description

The I-79 Widening, Bridges and Bridgeville Interchange project will replace the northbound and southbound bridges on I-79 mainline over SR-50, which were built in 1965 and last rehabilitated in 1998. The project also includes widening I-79 from two to three lanes in each direction and extending from Alpine Road north beyond SR-50 and Chartiers Creek to just before the Collier interchange and Prestley Road in Bridgeville, Allegheny County. The I-79 corridor carries an average of 87,000 vehicles daily, approximately 12 percent of which is truck traffic.

The purpose of the I-79 Widening, Bridges and Bridgeville Interchange project is to provide a safe and reliable crossing of I-79 over SR-50 and to widen I-79 to enhance capacity. In addition to replacing the dual I-79 bridges over SR-50, the W&LE Railroad and Chartiers Creek, the project will make improvements to the I-79/SR-50 interchange and bring the roadway up to date in order to improve safety along the corridor.

This bridge was previously part of the department's Major Bridge Public-Private Partnership. The project scope and available funding for the bridge are being reviewed as part of our 2025 12-Year Program Update to determine a path forward.