Maintenance on the Lehigh Tunnel is expected to cause traffic delays on the northeast extension.

Wednesday, August 6, crews will be performing tunnel maintenance from approximately 8:00am - 2:00pm.

During this time, traffic will be diverted out of the northbound tunnel and both north and southbound traffic will use the southbound tunnel -- one lane of each direction.

The Lehigh Tunnel is located between milepost 70 and 71 between the Lehigh Valley and Mahoning Valley exits.

If rain delays the project, it will take place on Thursday.