Concrete slab
Frankford Arch / Slab Bridge (Pike County, Missouri)
Slab bridge over Tributary of Peno Creek on former Frankford - Louisiana PikeIntact but in danger of eventual collapse.
KO&G Bridge (Cherokee County, Kansas)
Built 1928Abandoned bridge over Tributary of Spring River on Kansas, Oklahoma & Gulf RWDerelict/abandoned
Mallard Road Bridges (Rockingham County, New Hampshire)
Concrete rigid frame bridge over Mallard Road on Windham Rail-Trail & Concrete slab bridge over Flatrock Brook on Mallard RoadOpen to traffic
Saint Croix-Vanceboro Bridge (Washington County, Maine)
Built 1997Concrete slab bridge over St. Croix River (Spednik Lake) on ME 6 / NB 4Open to traffic