The Squirrel Hill Tunnel will be down to a single lane in both directions starting this weekend.
The restrictions for maintenance will be in place Friday night (Oct. 23) into Saturday morning and then again from Sunday through Thursday (Oct. 25-29) of next week.
Crews will be replacing lights inside the tunnel. The lane restriction each direction will happen from 10:30pm to 5am each day.
Before hitting the road, check traffic on the KDKA Radio Waze traffic map.