PITTSBURGH (KDKA) – PennDOT is about to start a major rehabilitation project on the Squirrel Hill Tunnel.

On Wednesday, officials announced what is in store for the tunnel and how traffic will be restricted during the project.

This will be the first renovation since it was built.

When renovations were done on the Fort Pitt Tunnel, crews completely shut it down. In this case, that will not happen.

Traffic will continue to flow with work beginning Monday night.

Crews will be redoing walls and resurfacing the travel lanes. Inside the tunnel itself, there will be over a foot of extra clearance above the vehicles going through, as the flat roof will become arched.

“At this time, we’re only going to plan overnight lane closures. Those lane closures basically mean that the inbound tunnel is going to be reduced to a single lane, but the tunnel will remain open. Weeknight inbound restrictions will occur from 10 p.m. until 5 a.m. Monday through Thursday nights,” PennDOT District 11 Executive Dan Cessna said.

On Friday and Saturday nights, the single lane restrictions will be in effect from 10 p.m. until 10 a.m.

Toward the end of July there will be some full lane closures coming, but more details will be released soon.

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