Project Overview
This project section is 3.5 miles in length and includes widening the existing PA Turnpike mainline to accommodate six 12-foot lanes with 12-foot inside and outside shoulders. Also included in this section’s design are overhead and mainline structure (such as bridges and overpasses) replacements. The section begins approximately one mile east of the Allegheny Valley Interchange and traverses portions of the Borough of Oakmont and Plum Borough in Allegheny County. The project begins just east of where Hulton Road crosses over the Turnpike and ends just west of where Saltsburg Road crosses over the Turnpike.
Improvements to substandard mainline curves, bridge overhead vertical clearances and roadway widths will be included. All overhead bridges will be replaced and many of these replacements will be completed ahead of mainline widening.
Roadway Typical Section
Below is a Typical Roadway Section graphic showing the configuration before and after widening.
At project completion, the section will consist of 6 travel lanes (3 westbound and 3 eastbound), with a 26-foot median, and 12-foot outside shoulders.
Project Map
