110th Street Bridge (Bremer County, Iowa)
Built 1956
Pony truss bridge over Little Wapsipicon River on 110th Street
Open to traffic

340th Street Bridge (Harrison County, Iowa)
Built 1956; replaced 2005
Lost through truss bridge over Willow River on 340th Street
No longer exists

Allen Road Bridge (Butler County, Ohio)
Built 1956; replaced Summer 2005
Lost pony truss bridge on Allen Road in West Chester Township
Replaced by new bridge

Avenue 19 over the Arroyo Seco (Los Angeles County, California)
Built 1956
Steel stringer bridge over Arroyo Seco Channel on Ave 19 in Los Angeles
Two lanes open to traffic (two closed)

Barnhart Island Road Bridge (St. Lawrence County, New York)
Built 1956; rehabilitated 1997
Through truss bridge over South Channel St. Lawrence River on Barnhart Island Road
Open to traffic

Beaver Creek Bridge (Haskell County, Oklahoma)
Built 1956
Pony truss bridge over Beaver Creek on OK 2 in Kinta
Open to traffic

Bellmore Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Bellmore Avenue in North Bellmore
Open to traffic

Bellmore Road Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Bellmore Road in East Meadow
Open to traffic

Bellmore Road Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Bellmore Road in East Meadow
Open to traffic

Berenda Slough Bridge (Madera County, California)
Built 1956
Pony truss bridge over Berenda Slough on Avenue 21-1/2
Open to traffic

Big Lake Creek Bridge (Wayne County, Missouri)
Built 1956
Pony truss bridge over Big Lake Creek on Route FF
Open to one-lane traffic on a paved road

Big River Route Y Bridge (Jefferson County, Missouri)
Built 1956; replaced 2000
Lost pony truss bridge over Big River on Route Y
Replaced by new bridge

Birch Creek Road Bridge (Umatilla County, Oregon)
Built 1956
Through truss bridge over Walla Walla River on Birch Creek Road
Open to traffic

Bird Creek Bridge (Rogers County, Oklahoma)
Built 1956
Through truss bridge over Bird Creek on OK 66 in Catoosa
Open to traffic

Bird Hollow Creek IN 64 Bridge (Crawford County, Indiana)
Built 1956
Three-span concrete arch bridge over Bird Hollow Creek on IN 64 in English
Open to traffic

Black Bill Wash Bridge (Grand County, Utah)
Built 1956
Concrete arch bridge over Black Bill Wash on UT 128
Open to traffic

BNSF Railroad Bridge (Crawford County, Wisconsin)
Built 1956
Deck truss bridge over BNSF Railroad on WI 82
Open to traffic

Bolling Bridge (Forsyth County, Georgia)
Built 1956
Through truss bridge over Chestatee River (Lake Lanier)
Open to traffic

Branch Whitebreast Creek Bridge (Lucas County, Iowa)
Built 1956
Pony truss bridge over a branch of Whitebreast Creek on a local road
Open to traffic

Branch Williams Creek Bridge (Warren County, Georgia)
Built 1956
Pony truss bridge over a branch of Williams Creek on Kitchens Road
Unknown status

Brush Creek Bridge (Sangamon County, Illinois)
Built 1956
Through truss bridge over Brush Creek on TR 355, 3.5 mi. north of Pawnee
Open to traffic

Buchanan Road Bridge (Tuolumne County, California)
Built 1956
Deck truss bridge over North Fork Tuolumne River on Buchanan Road
Open to traffic

Canteen Creek Bridge (Madison County, Illinois)
Built 1956. replaced 2007
Lost pony truss bridge over Canteen Creek on Mulberry Street in Collinsville
Replaced by a moden bridge on current site in 2007.

Capitol Blvd. Bridge (Thurston County, Washington)
Built 1956; rehabilitated 1988
Steel arch bridge over I-5 on Capitol Blvd. in Olympia
Open to traffic

Cattaraugus Creek Bridge (Cattaraugus County, New York)
Built 1956; rehabilitated 1971
Deck truss bridge over Cattaraugus Creek on US 219
Open to traffic

CMSTPP Railroad Bridge (Columbia County, Wisconsin)
Built 1956
Deck truss bridge over Broadway Street (WI 13/WI 16/WI 23) on CMSTPP Railroad in Wisconsin Dells
Open to traffic

Colfax Avenue over the Los Angeles River (Los Angeles County, California)
Built 1956
Deck truss bridge over Los Angeles River on Colfax Avenue in Los Angeles
Open to traffic

Collawash River Bridge (Clackamas County, Oregon)
Built 1956
Concrete arch bridge over Collawash River on Road
Open to traffic

Collins Canal Bridge (Miami-Dade County, Florida)
Built 1956; rehabilitated 1962
Concrete arch bridge over Collins Canal on FL 907 in Miami Beach
Open to traffic

Colonial Parkway Bridge (James City County, Virginia)
Built 1956
Concrete arch bridge over Colonial Parkway on VA 238
Open to traffic

Colonial Parkway Bridge (James City County, Virginia)
Built 1956
Concrete arch bridge over VA 238 on Colonial Parkway
Open to traffic

Colonial Parkway Bridge (York County, Virginia)
Built 1956
Concrete arch bridge over Route 1020 on Colonial Parkway in Yorktown
Unknown status

Colonial Parkway Bridge (James City County, Virginia)
Built 1956
Concrete arch bridge over Colonial Parkway on VA 238 in Yorktown
Open to traffic

Coon Creek Route T Bridge (Barton County, Missouri)
Built 1956
Pony truss bridge over Coon Creek on Route T
Unknown status

Corona Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Corona Avenue in Franklin Square
Open to traffic

CR 137 (Old S.H. 137) Bridge (Ottawa County, Oklahoma)
Built 1956; rehabilitated 1977
Steel stringer bridge over CR 137 (Old S.H. 137) on I-44/Will Rogers Turnpike
Open to traffic

Custer Way Bridge (Thurston County, Washington)
Built 1956; rehabilitated 1990
Concrete arch bridge over Deschutes River and I-5 on Custer Way in Tumwater
Open to traffic

Denali Highway Bridge (Denali Borough, Alaska)
Built 1956
Deck truss bridge over Susitna River on Denali Highway in Cantwell
Open to traffic

Denny Branch Bridge (Cherokee County, Kansas)
Built 1956
Arch bridge over Denny Branch
Open to traffic

Dhooge Road Bridge (Clackamas County, Oregon)
Built 1956
Truss bridge over Milk Creek on Dhooge Road
Replaced by a pre-cast concrete girder bridge in 2006

Dog Creek Bridge (Shasta County, California)
Built 1956; rehabilitated 1989
Concrete arch bridge over Dog Creek on I-5 in Lakehead-Lakeshore
Open to traffic

Dry Creek Bridge (Saline County, Nebraska)
Built 1956
Pony truss bridge over Dry Creek on FAS 3005
Open to traffic

Duke Power Feeder Canal Bridge (Gaston County, North Carolina)
Built 1956
Deck truss bridge over Duke Power Feeder Canal on NC 273 in Belmont
Open to traffic

Duwamish River Bridge (King County, Washington)
Built 1956
Bascule bridge over Duwamish River on WA 99 in Seattle
Open to traffic

East Crisman Road Bridge (Warren County, New Jersey)
Built 1956; rehabilitated 1990
Pony truss bridge over Paulins Kill on East Crisman Road
Open to traffic

Enoree River Bridge (Union County, South Carolina)
Built 1956
Through truss bridge over Enoree River on S-44-22
Open to traffic

Fleming Creek Bridge (Crawford County, Iowa)
Built 1956
Pony truss bridge over Fleming Creek on a local road
Open to traffic

Fletcher Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Fletcher Avenue in New York
Open to traffic

Hanley Road Overpass (St. Louis County, Missouri)
Built 1956; rehabilitated 1966
Beam bridge over Is 64 on Hanley Rd S in University City
Closed as of 29 December 2008

Hannah Creek IN 44 Bridge (Union County, Indiana)
Built 1956
Concrete arch bridge over Hannah Creek on IN 44
Open to traffic

Hempstead Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Hempstead Avenue in Franklin Square
Open to traffic

Hempstead-Franklin Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Hempstead-Franklin Avenue in Hempstead
Open to traffic

Hickock Road Bridge (Fairfield County, Connecticut)
Built 1956
Steel arch bridge over Silvermine River on Hickock Road in New Canaan
Open to traffic

Highland Drive Bridge (Westchester County, New York)
Built 1956
Steel arch bridge over Cortlandt Lake Creek on Highland Drive
Open to traffic

Humptulips River Bridge (Grays Harbor County, Washington)
Built 1956
Through truss bridge over Humptulips River on WA 109
Open to traffic

Indian Creek Bridge (Lucas County, Iowa)
Built 1956
Pony truss bridge over Indian Creek on a local road
Open to traffic

Interchange Bridge (Bronx County, New York)
Built 1956
Concrete arch bridge over Hutchinson River Parkway on I-95 in New York
Open to traffic

Interchange Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Wantagh State Parkway in North Wantagh
Open to traffic

Intracoastal Waterway Bridge (Broward County, Florida)
Built 1956
Bascule bridge over Intracoastal Waterway on FL A1A in Dania
Open to traffic

Intracoastal Waterway Bridge (Palm Beach County, Florida)
Built 1956
Bascule bridge over Intracoastal Waterway on US 1 in North Palm Beach
Open to traffic

Intracoastal Waterway Bridge (New Hanover County, North Carolina)
Built 1956
Bascule bridge over Intracoastal Waterway on US 74/US 76 in Wrightsville Beach
Open to traffic

Judd's Bridge Road Bridge (Litchfield County, Connecticut)
Built 1956
Steel arch bridge over Lenevig Brook on Judd's Bridge Road in Roxbury
Open to traffic

Kanawha River Bridge (Fayette County, West Virginia)
Built 1956
Through truss bridge over Kanawha River on WV 6 in Smithers
Open to traffic

Kansas River I-70 Bridge (Douglas County, Kansas)
Built 1956
Pair of deck truss bridges over Kansas River on I-70 in Lawrence
Open to traffic

Kimberling City Bridge (Stone County, Missouri)
Built 1956, replacing an earlier truss bridge inundated by the lake
Through truss bridge on MO 13 over Table Rock Lake (White River) at Kimberling City
Open to traffic

Land Blvd. Bridge (Middlesex County, Massachusetts)
Built 1956
Bascule bridge over Broad Canal on Land Blvd. in Cambridge
Open to traffic

Linn Creek Bridge (Marshall County, Iowa)
Built 1956
Pony truss bridge over Linn Creek on a local road in Marshalltown
Unknown status

Little Creek Route F Bridge (Harrison County, Missouri)
Built 1956
Pony truss bridge over Little Creek on Route F
Open to traffic

Little Creek Route JJ Bridge (Ozark County, Missouri)
Built 1956
Pony truss bridge over Little Creek on Route JJ
Open to traffic

Little River LA 500 Bridge (La Salle Parish, Louisiana)
Built 1956
Pony truss bridge over Little River on LA 500
Open to traffic

Little Tabo Creek MO 213 Bridge (Lafayette County, Missouri)
Built 1956
Pony truss bridge over Little Tabo Creek on MO 213
Open to traffic

Little Washita River Bridge (Grady County, Oklahoma)
Built 1956
Pony truss bridge over Little Washita River on 2652C
Open to traffic

Long Creek Bridge (Taney County, Missouri)
Built 1956
Cantilevered through truss bridge on MO 86 over Long Creek (Table Rock Lake)
Open to two-lane traffic

Long Dick Creek Bridge (Story County, Iowa)
Built 1956; rehabilitated 1974
Pony truss bridge over Long Dick Creek on a local road
Open to traffic

Lotts Creek Bridge (Ringgold County, Iowa)
Built 1956
Pony truss bridge over Lotts Creek on a local road
Unknown status

Manitou River Bridge (Lake County, Minnesota)
Built 1956
Concrete arch bridge over Manitou River on MN 61
Open to traffic

Maquoketa River Bridge (Jackson County, Iowa)
Built 1956
Through truss bridge over Maquoketa River on a local road
Open to traffic

Maumee River Bridge (Lucas County, Ohio)
Built 1956; rehabilitated 1980
Bascule bridge over Maumee River on I-280 in Toledo
Open to traffic

Meadowbrook Road Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Meadowbrook Road in North Merrick
Open to traffic

Merrick Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Merrick Avenue in North Merrick
Open to traffic

Mid Fork Chowchilla River Bridge (Madera County, California)
Built 1956
Through truss bridge over Mid Fork Chowchilla River on CR 800
Open to traffic

Milburn Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Milburn Avenue in Uniondale
Open to traffic

Mississippi River US 30 Bridge (Clinton County, Iowa)
Built 1956
Suspension bridge over Mississippi River on US 30 at Clinton
Open to traffic

Moccasin Creek Bridge (Russell County, Virginia)
Built 1956
Pony truss bridge over Moccasin Creek on Route 676
Open to traffic

Moulton Hill Bridge (Hampden County, Massachusetts)
Built 1956
Steel arch bridge over Vinica Brook on Moulton Hill in Monson
Open to traffic

Naked Creek Bridge (Page County, Virginia)
Built 1956
Pony truss bridge over Naked Creek on Route 604
Open to traffic

Nassau Road Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Nassau Road in Uniondale
Open to traffic

New Madrid County Road 284 Bridge (New Madrid County, Missouri)
Built 1956; rehabilitated 1987
Wooden deck bridge on CR 284 over a drainage ditch southwest of Gideon near the Dunklin County line
Open to traffic

New Madrid County Road 357 Bridge (New Madrid County, Missouri)
Built 1956; rehabilitated 1988
Wooden deck bridge over a drainage ditch on CR 357 west of Portageville
Open to traffic

North Fork Kentucky River KY 3193 Bridge (Breathitt County, Kentucky)
Built 1956
Through truss bridge over North Fork of Kentucky River on KY 3193
Open to traffic

Oakfield Road Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Oakfield Road in East Meadow
Open to traffic

Old Sidney Lanier Bridge (Glynn County, Georgia)
Built 1956
Lost vertical-lift bridge over Brunswick River on US 17 at Brunswick
No longer exists

Orangeburg Road Bridge (Rockland County, New York)
Built 1956; rehabilitated 1973
Concrete arch bridge over Palisades Interstate Parkway on Orangeburg Road in Orangeburg
Open to traffic

Orangeburg Road Bridge (Rockland County, New York)
Built 1956; rehabilitated 1973
Concrete arch bridge over Palisades Interstate Parkway on Orangeburg Road in Orangeburg
Open to traffic

Oregon Street Bridge (Winnebago County, Wisconsin)
Built 1956; rehabilitated 1994
Bascule bridge over Fox River on Oregon Street in Oshkosh
Open to traffic

Otter Creek Bridge (Fayette County, Iowa)
Built 1956
Pony truss bridge over Otter Creek on a local road
Open to traffic

Park Avenue Bridge (Nassau County, New York)
Built 1956
Concrete arch bridge over Southern State Parkway on Park Avenue in Uniondale
Open to traffic

Pendergast Road Bridge (Oswego County, New York)
Built 1956
Steel arch bridge over Hinmansville Creek on Pendergast Road
Open to traffic

Perkins Creek Bridge (Marshall County, Kansas)
Built 1956
Pony truss bridge over Perkins Creek
Open to traffic

Pettis Creek Route T Bridge (Barton County, Missouri)
Built 1956
Pony truss bridge over Pettis Creek on Route T
Open to traffic