Keystone columns

Independence Bowstring (Verdigris River) Bridge (Montgomery County, Kansas)
Built 1871 by the Wrought Iron Bridge Co.
Bowstring through truss bridge over Verdigris River at the end of Burns Street in Independence
Abandoned with deck missing and surrounded by overgrowth

Windsor Harbor Bridge (Jefferson County, Missouri)
Originally built 1874 by the Keystone Bridge Co. over River Des Peres at Lemay Ferry in St. Louis. Relocated to Kimmswick in 1930; bypassed by new bridge in 1985.
Wrought-iron through truss over Rock Creek on Windsor Harbor Road in Kimmswick
Open to pedestrians only