October 18, 2021 Travel Advisory

Single lanes at Allegheny Tunnel, Somerset County, Begin Oct. 19

Caution is advised due to bi-directional traffic.

The Pennsylvania Turnpike Commission advises motorists traveling through Somerset County to be prepared for possible delays beginning Oct. 19, as single-lane patterns and two-way traffic go into effect at the Allegheny Tunnel, located at milepost 122.

The westbound tunnel will close 7 p.m. Oct. 19. This means two-way traffic will be moving inside the eastbound tunnel. This restriction will be lifted around 11 p.m. Patterns will be shifted to close the eastbound tunnel, two-way will then be moving inside the westbound tunnel. The tunnel will reopen around 7 a.m. Oct. 20.

The tunnels need to be closed for the lighting inspectors and contractors to do final testing for the future rehabilitation project. 

Motorists should stay alert when approaching and entering the tunnel. Drivers are urged to turn on headlights, slow down and keep an adequate distance from the vehicle you are following; remain in your lane and do not pass in the tunnel.

If you experience car trouble and cannot safely exit the tunnel, stay in your car, put on your hazard lights and wait for assistance. Tunnel personnel will monitor closed-circuit cameras and send help for disabled vehicles.

To report an accident or other emergency on the PA Turnpike, dial *11 via mobile phone. To learn more about PA Turnpike conditions, use one of these resources:


  • 511PA Smartphone App: real-time, hands-free PA traffic advisories
  • Digital Message Signs: more than 100 boards along the Turnpike


  • 511/511pa.com: live, interactive map
  • Twitter: @PATurnpikeAlert


  • 511: dial from any PA roadway for local travel information
  • Pennsylvania Turnpike Customer Assistance Center: 1-877-736-6727, Monday through Friday, 7 a.m. to 5 p.m.

Rosanne Placey
Phone: 717-675-4362