May 28, 2025

The Department of Public Works announced today that the inbound Armstrong Tunnel will reopen and the more than two-year, $13.1 million Armstrong Tunnel rehabilitation project will end tomorrow morning. County Executive Sara Innamorato was joined by local elected officials and members of her administration for a ribbon-cutting today to celebrate the accomplishment.

“We know that a connected community is a thriving community,” said County Executive Innamorato. “This project not only restores a vital piece of infrastructure, it also reflects our commitment to safety, sustainability, and smart investment in the future of Allegheny County.”

While the sidewalk work associated with the rehabilitation project has been completed, the sidewalk is expected to remain closed through September. On the Forbes Avenue side of the tunnel, Duquesne University is using scaffolding on the sidewalk to make repairs to the Fisher Hall pedestrian bridge.