Monongahela River at West St., Pittsburgh, Pennsylvania. County/parish: Allegheny.
Added to the National Register of Historic Places January 07, 1986. NRIS 86000016.
Part of Allegheny County Owned River Bridges TR (NRIS 64000703).
1 contributing structure.
The Homestead Grays Bridge, also known as the (Homestead) High Level Bridge, was built in 1936 and spans the Monongahela River between Homestead Borough and the southernmost tip of Pittsburgh's Squirrel Hill neighborhood. It is notable as the first bridge to incorporate the Wichert Truss, which uses a quadrilateral shape over each support, into its design. This made the truss statically determinate, so that forces in the structural members could be calculated. There are very few surviving Wichert Truss bridges, including one other example in Pittsburgh, the Charles Anderson Memorial Bridge.
(read more...)National Park Service documentation: https://catalog.archives.gov/id/71992236