The Pennsylvania Turnpike Commission advises motorists traveling on the Northeastern Extension (I-476) to be prepared for daytime single-lane patterns and two-way traffic in the southbound Lehigh Tunnel from 8 a.m. to 2 p.m. on Tuesday, Wednesday and Thursday.

By 8 a.m. each day, the northbound tunnel will be closed and all traffic diverted into the southbound tunnel until 2 p.m. when the patterns are lifted. The restrictions are necessary to allow crews to safely perform tunnel inspections.

Message boards will be activated to update motorists of any changes to the schedule caused by inclement weather or unforeseen traffic conditions. If the work is delayed, it will take place on the next available day.