The Pennsylvania Turnpike Commission advises motorists traveling on the Northeastern Extension (I-476) north from Lehigh Valley (Exit #56) and south from Mahoning Valley (Exit #74), to be prepared for bi-directional single-lane traffic patterns, stoppages and two-way traffic in the northbound Lehigh Tunnel from 8 p.m. today until 5:00 a.m. Wednesday.

At 8 p.m., construction crews will establish a single-lane traffic pattern, closing the left lane northbound (milepost A70.1 - A71.9) and southbound (milepost A73.2 - A70.4).

At approximately 8:15 p.m. traffic traveling northbound will be paced and southbound will be stopped (no more than 15 minutes) to allow crews to complete the pattern and divert traffic into the northbound tunnel. Once traffic has been shifted, the southbound tunnel will be closed until the patterns are lifted by 5 a.m. Wednesday morning.