PHILADELPHIA (CBS) — Pennsylvania State Police say one person is dead and two others are injured after a single-vehicle accident on the Pennsylvania Turnpike in Chester County Wednesday.

It happened around 4 p.m. on the Turnpike westbound at milepost 307.1 in Wallace Township.

The Pennsylvania Turnpike Commission advises drivers traveling westbound on the PA Turnpike (I-76) from Valley Forge, that a highway detour between Downingtown (Exit #312) and Morgantown (Exit #298) is now in effect.

All westbound traffic is being directed to exit the Turnpike at Downingtown and follow the detour to reenter the system at the Morgantown Interchange (Exit #298).

Drivers exiting at Downingtown will take: State Route 100 North (9 miles) to State Route 23 West (12.5 miles) to State Route 10 North (1 mile).  Re-enter the Pennsylvania Turnpike at the Morgantown Interchange (298/old 22) to continue westbound.

Drivers approaching the Downingtown interchange should be prepared for slow moving or stopped traffic, backlog is currently at milepost 318. The Turnpike Commission says tolls are being waived for drivers exiting at Downingtown.

Trapped back-log west of Downingtown is being turned around in the westbound lanes to exit at Downingtown.

Pennsylvania State Police are investigating.

UPDATE: As of 7:30 p.m., the westbound backlog for traffic exiting at Downingtown is at mile post 318.3 WB.  Motorists should avoid the area and exit westbound at Valley Forge (#326) or Rt. 29 (Exit #320).

Tolls are being waived at Downingtown (Exit #312) and Rt. 29 E-ZPass Only (Exit #320).

Local fire police are directing traffic at the Rt. 29 intersection and have closed the Rt. 29 ramp to westbound I-76. Traffic is exiting at Rt. 29 without delay.


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