The Pennsylvania Turnpike Commission advises motorists traveling on the Northeastern Extension (I-476) to be prepared for nighttime single-lane patterns and two-way traffic in the southbound Lehigh Tunnel on from 8 p.m. to 6 a.m. daily Sunday through May 11.

By 8 p.m. each night, the northbound tunnel will be closed and all traffic diverted into the southbound tunnel until 6 a.m. when the patterns are lifted.The restrictions are necessary to allow crews to safely perform tunnel inspections.The Lehigh Tunnel is located at milepost A70-A71 between the Lehigh Valley, Exit 56, and Mahoning Valley, Exit 74, interchanges.