Air Line State Park Trail

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Air Line State Park Trail - Blackledge River Bridge (New London County, Connecticut)
Built 1907, abandoned 1965, converted to trail use early 2000s
Double-intersection Warren deck truss bridge over Blackledge River on Airline state park Trail S
Open to pedestrians only

Air Line State Park Trail - Brousseous Brook Arch (New London County, Connecticut)
Stone arch bridge over Brousseous Brook on Airline State Park Trail
Open to pedestrians only

Air Line State Park Trail - Judd Brook Bridge (Tolland County, Connecticut)
Abandoned 1965, converted to trail early 2000s
Steel stringer bridge over Judd Brook on Airline State Park Trail - South
Open to pedestrians only

Air Line State Park Trail - Mashamoquet Brook Arch (Windham County, Connecticut)
Stone arch bridge over Mashamoquet Brook on Airline North State Park Trail
Open to pedestrians only

Air Line State Park Trail - Natchaug River Bridge (Windham County, Connecticut)
Built 1905, abandoned 1985, converted for trail use during the 1990s
Deck plate girder bridge over Natchaug River on Airline North State Park Trail
Open to pedestrians only

Air Line State Park Trail - Pocotopaug Creek Bridge (Middlesex County, Connecticut)
Converted to trail use 2012
Deck plate girder bridge over Pocotopaug Creek on Airline State Park Trail - South
Open to pedestrians only

Air Line State Park Trail - River Road Overpass (New London County, Connecticut)
Built 1887; abandoned 1965 by New Haven RR Portland-Columbia
Stone arch bridge over River Road on Airline State Park Trail S
Open to pedestrians only

Air Line State Park Trail - Willimantic River Bridge (Windham County, Connecticut)
Abandoned 1965, converted for trail use 2015
Deck plate girder bridge over Willimantic River on Airline South State Park Trail
Open to trail traffic

East Thompson Wooden Bridge (Windham County, Connecticut)
Abandoned timber stringer bridge over Air Line State Park Trail on Abandoned road
Derelict/abandoned

NH - Lyman Viaduct (New London County, Connecticut)
Built 1871-73, buried by fill in 1912-13, railroad abandoned in 1965
Buried Deck truss bridge over Dickinson Creek on former New Haven, Middletown and Willimantic Railroad
Filled in

NH - Quinebaug River Bridge (Windham County, Connecticut)
Two southern spans lost to 1955 floods, line abandoned 1959, remainder demolished at a later point
Lost Deck plate girder bridge over Quinebaug River, River Road, and Kennedy Drive on NYNH&H Midland Division
Replaced by a pedestrian bridge

NH - Rapallo Viaduct (Middlesex County, Connecticut)
Built 1873, buried by fill in 1912-13, railroad abandoned in 1965
Buried Deck truss bridge over Flat Brook on former New Haven, Middletown and Willimantic Railroad
Filled in

Parker Road Bridge (Windham County, Connecticut)
Abandoned timber stringer bridge over Airline North State Park Trail on former alignment of Parker Road
Derelict/abandoned