Riddle Bridge, Spanning Gasconada River, Dixon, Pulaski County, MO

Significance: Riddle Bridge is a Pennsylvania (Petit) span with timber stringer approach spans on each end. The metal truss is unique within Missouri because each alternate laced vertical member (numbers 3, 5, 7, and 9) extends only half the distance from the upper chord to the lower chord. A single eyebar is pinned to the end of the half-length laced member; this eyebar continues to a panel point connection at the lower chord. Riddle Bridge was fabricated by the Canton Bridge Company of Canton, Ohio.

Survey number: HAER MO-28

Building/structure dates: 1913 Initial Construction

steel truss bridges civil engineering bridge construction agriculture vehicular bridges dixon riddle bridge riddle bridge gasconada gasconada river pulaski pulaski county missouri cambria steel company canton bidge company c e george historic american engineering record jones and laughlin steel company elias riddle john riddle a g williams photo ultra high resolution high resolution library of congress

1969 - 1980

Library of Congress

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