The Pennsylvania Turnpike Commission advises motorists traveling on the Northeastern Extension (I-476) to be prepared for nighttime single-lane patterns and bidirectional traffic in the Lehigh Tunnel beginning tonight and continuing through Thursday.

At 7 each evening, the northbound tunnel will be closed, and all traffic will be bidirectional in the southbound tunnel until the patterns are lifted, by 8 a.m. the next morning.

The restrictions are necessary to allow crews to safely perform milling and paving work inside the northbound tunnel.

The Lehigh Tunnel is located between milepost A70.2 and A71.5 between the Lehigh Valley, Exit 56, and Mahoning Valley, Exit 74, interchanges.