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

Each day at 8 a.m., the southbound tunnel will be closed and traffic diverted into the northbound tunnel until 2 p.m.The Lehigh Tunnel is located at milepost A70-A71 between the Lehigh Valley (Exit 56) and Mahoning Valley (Exit 74) interchanges.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.Tunnel maintenance may also be scheduled for the following week if needed.Motorists traveling on I-476 should stay alert when entering the tunnel and turn on their headlights.Drivers are also advised to slow down, keep an adequate distance from the vehicle ahead and never pass inside the tunnel.Customers who experience car trouble and cannot safely exit the tunnel should stay in the car, put on the hazard lights and wait for assistance.Tunnel personnel will monitor closed-circuit cameras and send help for disabled vehicles.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 Pennsylvania 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.Download the free app at

www.paturnpike.com/triptalk.