KING POST PONY TRUSS
1920 Lincoln 41N3350E0870000
In the initial stages of it's evolution, the truss took the form of a king post, a simple triangular shape, usually composed of timber with iron hardware, divided by a single vertical post connecting top and bottom chords. Easily fashioned and sufficiently strudy at small crossings, the type remained an option as a steel bridge well into the twentieth century. One example appears in Oklahoma. This structure (Figure 42) stands on a dirt road south of Carney and consists of a lightweight material including two steel rods as a vertical. Although probably dating to the 1920s and notable for its type, this span exhibits a problem commonly encountered in researching many small county bridges - documentation is scarce or simply does not exist.
Figure 42. Bridge 41N3350E0870000 in Lincoln County is the state's only king post truss.