Corbin Bridge  Corbin Bridge, also known as Huntingdon County Bridge No. 20, is a historic suspension bridge spanning the Raystown Branch Juniata River and located at Juniata Township, Huntingdon County, Pennsylvania. It was built by the Reading Steel Products Inc. in 1937. It measures and has a deck. It is the only road suspension bridge in Huntingdon County. It was added to the National Register of Historic Places in 1990.