(WPXI) – The Pennsylvania Turnpike eastbound has been shut down for a fatal tractor-trailer crash in the Plum area. The crash occurred near mile marker 54.6 between the Allegheny Valley exit and Pittsburgh exit. Due to the severity of the crash, an eastbound detour was put in place at Exit 48. Detour: Freeport Road to PA-910 West to PA-28 South to I-579 South to I-376 East to re-enter the Turnpike at the Pittsburgh Interchange.