Thompson River 3rd Street Bridge (Grundy County, Missouri)
Built 1921Two-span through truss bridge over Thompson River on 3rd Street (Old MO 6) west of TrentonOpen to traffic
Trenton Viaduct (Grundy County, Missouri)
Built 1931; replaced 2003Lost through truss bridge over the Union Pacific Railroad on MO 6 in TrentonReplaced by a new bridge