17th Street Bridge (Grundy County, Missouri)
Built ca. 1930
Wooden bridge over the Union Pacific Railroad on 17th Street in Trenton
Open to traffic

22nd Street Bridge (Grundy County, Missouri)
Built ca. 1930
Wooden bridge over the Union Pacific Railroad on 22nd Street in Trenton
Open to traffic

Trenton Viaduct (Grundy County, Missouri)
Built 1931; replaced 2003
Lost through truss bridge over the Union Pacific Railroad on MO 6 in Trenton
Replaced by a new bridge