Saw Mill Run Boulevard - Pennsylvania State Route 51 - runs through the narrow Saw Mill Run Valley. It begins at the intersection of Clairton Road and Provost Road at the City of Pittsburgh Line with Brentwood. It ends at the West End Circle at the entrance to the West End Bridge. A four-lane highway for its entire length, Saw Mill Run Boulevard consists of interchanges at the South Portal of the Liberty Tubes and with the Parkway West. It is an expressway from the Parkway to the West End Circle (West End Bypass). One of the most well-known traffic tie-ups in the Pittsburgh area occurs between Maytide Street and PA 88 (Library Road) which is simply known as 'Maytide and 88.' History: Saw Mill Run Boulevard was part of the 1928 Allegheny County 'City Beautiful' bond issue. The bonds resulted in the creation of Saw Mill Run, Ohio River, Allegheny River, and Mosside Boulevards. (1) After the completion of the Liberty Tunnels in 1924, Dow...
Because every road has a story.