Updated: 11:27 AM EDT June 2, 2021 HARRISBURG, Pa. The Pennsylvania Turnpike Commission announced that 10 service plaza entry and exit ramps will be closed for a few hours from Thursday through June 11, so that work crews can install traffic detection sensors for a Truck Parking Management System. The ramps will be closed for about an hour between 12:01 and 4 a.m. on specified days listed below, the Turnpike Commission said. During the 60-minute closures, the service plaza entry ramps will be closed to all traffic. Motorists will not be able to enter the service plazas and should seek alternate options for fuel, food and restrooms, according to the Turnpike Commission.