The Pennsylvania Turnpike Commission advises motorists traveling on the Northeastern Extension (I-476) to be prepared for a daytime single-lane pattern and two-way traffic in the northbound Lehigh Tunnel from 8 a.m. to 2 p.m. today and Thursday for routine tunnel maintenance.

Each day between 7:30 a.m. and 8 a.m., Turnpike maintenance crews will implement a traffic stoppage of no more than 15 minutes in both directions to set-up a crossover pattern directing all traffic into the northbound tunnel.

By 8 a.m. the southbound tunnel will be closed and traffic diverted into the northbound tunnel until 2 p.m. when the patterns are lifted. The Lehigh Tunnel is located at milepost A70-A71 between the Lehigh Valley (Exit #56) and Mahoning Valley (Exit #74) interchanges.

Travel advisories will be posted at

www.paturnpike.com and Highway Advisory Radio (1640 AM) will be activated to provide travel updates.Travelers can get Turnpike traffic alerts by calling 866-976-TRIP (8747) or visiting the live Travel Conditions Map online at

www.paturnpike.com/webmap. The Pa. Turnpike's smartphone app, TRIP Talk, streams audio advisories to iPhone and Droid users so they can keep their hands on the wheel and eyes on the road. To download the free app, visit

www.paturnpike.com/triptalk.