Bird Creek Bridge, Tulsa Co.

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.