Never built

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12th Street Bridge (Unbuilt) (Cook County, Illinois)
Through truss bridge over Chicago River on 12th Street (Now Roosevelt Road)
Never built

Almonaster Avenue Bridge (Never Built) (Orleans Parish, Louisiana)
Planned, But Never Constructed
Warren through truss bridge over Industrial Canal on Almonaster Avenue/With Railroad
Never built

BM&NW - Iowa River Bridge (Louisa County, Iowa)
Approved 1933, never constructed
Bridge over Iowa River on Burlington, Muscatine & Northwestern Railway
Never built

Corkery Bridge (Dallas County, Missouri)
Only the piers were completed for this bridge and the road structure was never built sometime from 1918-1920
Bridge over Niangua River on Marigold Drive
Only the Piers and Abumbents Were Compelted, No Bridge Deck Structure Built on Them.

DL&W - Hackensack River Bridge (Never Built) (Hudson County, New Jersey)
Warren through truss bridge over Hackensack River on Delaware Lackawanna & Western RR
Never built

Eel River Unfinished Bridge (Clay County, Indiana)
An extension of the Southern Indiana to Indianapolis started in 1905 but not finished.
Bridge over Eel River on nothing
Never built

EL - Cuyahoga River Bridge (Cuyahoga County, Ohio)
Planned, but never built
Lost Warren through truss bridge over Cuyahoga River on Erie Lackawanna Railroad
Never Built

Fourteen Mile Creek Bridge (Clark County, Indiana)
Bridge started but never finished in the old ammunition plant.
Bridge over Fourteen Mile Creek on non existent road
Never built

Grand Avenue Bridge (Unbuilt) (Polk County, Iowa)
Never Built
Closed-spandrel arch bridge over Des Moines River on Grand Avenue
Never built

Hartman's Bridge (Beaver County, Pennsylvania)
Piers constructed 1910
Unbuilt bridge over Beaver River on Unbuilt Interurban (Referred to as streetcar) line
Never built aside from piers

Horse Creek Cove, Grand Lake Bridge (Delaware County, Oklahoma)
According to local, bridge was started but never completed.
Never completed bridge over Grand Lake
Project abandoned

Mountain Fork River CR 48 Bridge (Polk County, Arkansas)
Bridge was under construction but piers were knocked down by a flood and bridge project was abandoned
Unfinished bridge destroyed by a flood over Mountain Fork River on CR 48 west of Potter
Bridge was in the process of being constructed when a flood knocked the piers over. Construction was then abandoned and a low water bridge was built instead.

Path Valley Railroad - Conococheague Tunnel (Perry County, Pennsylvania)
Construction started January 1894, never completed
Tunnel under Conococheague Mountain
Never built

Ruck-A-Chunky Bridge (Placer County, California)
Planned in 1960's to replace Greenwood Bridge as part of Auburn Dam project, but never built.
Cable-stayed bridge over Middle Fork American River on Slinger Mine Road
Never built

Saratoga Whitehall - Hudson River Bridge (Saratoga County, New York)
Built 1836
Bridge over Hudson River on Saratoga Whitehall Railroad
Never built, construction halted after piers were set

SN - Suisin Bay Bridge (Contra Costa County, California)
Consruction began 1912, construction halted May 1913 because of a lack of funds
Bridge over Suisin Bay on Sacramento Northern Railway
Never built

Terre Haute and Southwestern Railroad Bridge (Sullivan County, Indiana)
Piers built
Unfinished bridge over Wabash River on Terre Haute and Southwestern Railroad
Never finished

Three Sisters Bridge (Washington, District of Columbia)
Building started 1960's; Cancelled due to protests 1970's
Girder bridge over Potomac River
Never built

Union Station (Unbuilt) (Polk County, Iowa)
Closed-spandrel arch bridge over Des Moines River on Railroads/Passenger Station
Never built

WW&F - Kennebec River Bridge (Kennebec County, Maine)
Bridge over Kennebec River & Maine Central Railroad on Wiscasset, Waterville & Farmington Railway
Never built; Stone supports stand