​I-79 "S-Bend" Project

Project Overview

This project is located on I-79 in Kennedy, Robinson, and Neville townships, and Glenfield Borough in Allegheny County. It begins approximately a half a mile north of the Route 60 (Moon Run) interchange and extends nearly 5.5 miles to the northern end of the I-79 Neville Island Bridge. The project scope of work involves full-depth pavement reconstruction, bridge preservation work on five mainline structures (I-79 northbound and southbound over Clever Road, I-79 northbound and southbound over Route 51, and the Neville Island Bridge). Additionally, there will be milling and paving of three ramps at the Route 51 (Coraopolis/McKees Rocks) interchange. The project also includes guiderail replacement, highway lighting and signing upgrades, new pavement markings and delineation, and other miscellaneous construction work.

Lane Crossover Details

Crossover anticipated to begin early-May 

Anticipated I-79 Southbound lane restrictions (2023)

• Reduced speed limit to 45 MPH throughout the entire project in both directions
  
• Two lanes maintained during peak travel times in both directions
• Two lanes of I-79 Northbound mainline traffic will be maintained
• One southbound lane will be maintained as a local exiting lane, adjacent to the work area
• One southbound lane (express lane) will crossover onto the opposing side of I-79 and will not have access to any exits
• All interchanges and ramps will be open and maintained, however, a detour will be implemented for the overnight closure of the Route 51 ramp to I-79 Southbound when needed. It is anticipated there will be a 30-day closure of Grand Avenue (Route 8015) on-ramp to I-79 Southbound.