Built in 1926, this 210' long Parker truss carries 56th Street North across Bird Creek south of Owasso.
Below, an overview of the bridge. It consists of one 210-foot Parker mainspan and two flanking 80-foot long Pratt pony spans. The mainspan is a combination pinned-riveted designed pioneered by such earlier structures such as the Calvin bridge (1919) and the Newcastle bridge (1923). All three spans in this bridge are of state standard design.
Above, a 'deck up' view of the structure from the pony approach.
Below, details of the portal and sway bracing. The curved knee braces in the portals are a carry over from the late Victorian era and were used on virtually all Oklahoma thru truss spans built until the end of the 1920's.
Above, a detail of the hip joint.
Below, another deck-up view of the bridge.
Below, the west pony span.