The Pennsylvania Turnpike will have single-lane patterns and two-way traffic in the southbound Lehigh Tunnel on the Northeastern Extension of Interstate 476 from 8 a.m. to 2 p.m. on Wednesday and Thursday.

Both days between 7:30 a.m. and 8 a.m., maintenance crews will stop traffic for no more than 15 minutes in both directions, so that all traffic can be directed into the southbound tunnel. By 8 a.m. the northbound tunnel will be closed and all traffic diverted into the southbound tunnel until 2 p.m., when the patterns are lifted.The Lehigh Tunnel is located at milepost A70-A71 between Lehigh Valley, Exit 56 and Mahoning Valley, Exit 74 in Carbon County.Message boards will be used if there are any changes to the schedule due to inclement weather or unforeseen traffic conditions. If the work is delayed, it will take place on the next available day.Drivers traveling on I-476 are asked to stay alert when entering the tunnel and turn on their headlights. They should also slow down, keep an adequate distance from the vehicle ahead, and never pass inside the tunnel.If a driver experiences car trouble and cannot safely exit the tunnel, he or she should stay in the car, put on hazard lights and wait for assistance. Tunnel personnel will monitor via closed-circuit cameras and send help. To report an accident or other emergencies on the Turnpike, dial *11 on cell phones.Turnpike information is available via the Highway Advisory Radio on 1640 AM near interchanges; Turnpike Roadway Information Program at 866-976-8747; Customer Assistance Center on from 8:30 a.m. to 4:30 p.m. weekdays at 800-331-3414; or on the web with TRIPTalk, a free, travel-alert smartphone app at

https://www.paturnpike.com/travel/trip_talk.aspx and Travel Conditions Map at

https://www.paturnpike.com/webmap.