Drivers exiting at these interchanges should use the following detours: The Pennsylvania Turnpike will be closed in both directions between the Butler Valley Interchange (Exit 39) and Allegheny Valley Interchange (Exit 48) from 11:59 p.m. Saturday to 6 a.m. Sunday, the Pennsylvania Turnpike Commission said. Drivers exiting at these interchanges should use the following detours: The Pennsylvania Turnpike will be closed in both directions between the Butler Valley Interchange (Exit 39) and Allegheny Valley Interchange (Exit 48) from 11:59 p.m.