Concrete slab

Frankford Arch / Slab Bridge (Pike County, Missouri)
Unknown History
Slab bridge over Tributary of Peno Creek on former Frankford - Louisiana Pike
Intact but in danger of eventual collapse.

KO&G Bridge (Cherokee County, Kansas)
Built by Misouri, Oklahoma and Gulf Railway in 1912, acquired from receiver in 1918 by KO&G
Abandoned bridge over Tributary of Spring River on Kansas, Oklahoma & Gulf RW
Derelict/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 Road
Open to traffic

Rosillo Creek Bridge (Bexar County, Texas)
1926 Tee Beam and slab
Open to traffic

Saint Croix-Vanceboro Bridge (Washington County, Maine)
Built 1997
Concrete slab bridge over St. Croix River (Spednik Lake) on ME 6 / NB 4
Open to traffic

Sarah Mildred Long Bridge (New) (York County, Maine)
Built 2018
Vertical-lift bridge over Piscataqua River on US-1 Bypass
Open to traffic