St. Mary's River

ACL St. Marys River Bridge (Nassau County, Florida)
Originally built for the Atlantic Coast Line Railroad
Warren through truss bridge over St. Marys River on double railroad track of CSX Railroad
Open to traffic

Erie St. Mary's River bridge (Adams County, Indiana)
Railroad was abandoned in early1980's. Trail extends across bridge and East for a short distance along old railroad right of way.
Through truss bridge over St. Mary's River on Trail, formerly Erie Western Railroad(nee Erie Lackawanna, Chicago & Atlantic Railroads)
Open to pedestrians

Grand Rapids and Indiana Railroad St. Mary's River bridge (Adams County, Indiana)
Part of the Grand Rapids and Indiana Railroad "Fishing Line" from Cincinatti to Northern Michigan in conjunction with the Pere Marquette Railroad, later part of the Pennsylvania Railroad empire. Formerly used to get from Ft. Wayne to Decatur.
Pratt through truss bridge over St. Mary's River on Chicago Fort Wayne and Eastern Railroad via lease from CSX Transportation(nee Conrail, Penn Central, Pennsylvania Railroad, Grand Rapids and Indiana Railroad)
Replaced, dismantled and saved for possible reuse.