The 295-foot long Norman Bridge, spanning the Middle Fork of the Snoqualmie River near North Bend, is the only remaining example in King County of a timber truss vehicular bridge. (The bridge no longer serves vehicular traffic.) The last of its type constructed by the King County Engineering Department, the 1950 bridge replicated the 1924 span that it replaced. By the time the Norman Bridge was built, concrete and steel trusses were commonly used for bridge construction. However, the availability of relatively inexpensive large timbers in Washington kept timber bridges in use in the region.