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Over a mile long

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Alaskan Way Viaduct (King County, Washington)
Built 1953; rehabilitated 1957; replaced 2010-2018
Double-deck stringer bridge running parallel to Alaskan Way along Seattle waterfront
Open to traffic; to be demolished in 2018 after completion of new tunnel

Albemarle Sound Bridge (Washington County, North Carolina)
Built 1990
Beam bridge over Albemarle Sound on NC 32/NC 94
Open to traffic

Allegheny Mountain Tunnel (Somerset County, Pennsylvania)
Westbound tunnel completed 1940; eastound tunnel completed 1965
Tunnel on Pennsylvania Turnpike/I-70/I-76
Open to traffic

Alligator River Bridge (Tyrrell County, North Carolina)
Built 1960; rehabilitated 2018
Swing bridge over Alligator River on US 64
Closed for rehabilitation until August 2018

Ambassador Bridge (Wayne County, Michigan)
Built 1927-1928; New Plaza 2008
Wire suspension bridge over Detroit River on US I-96 and Canada 3 in Windsor, Ontario Canada and Detroit
Open to traffic

Amistad Reservoir Viaduct (Val Verde County, Texas)
1965 Steel stringer bridge over Amistad Reservoir on US 90 elegible for NRHP
Open to traffic

Amtrak - B&P Tunnels (Baltimore County, Maryland)
Built 1873
Tunnel under Baltimore, MD on Amtrak Northeast Corridor
Open to traffic

Antioch Bridge (Sacramento County, California)
The current bridge was completed and opened to traffic in 1978. It measures 1.8 miles (2.9 km). It replaced the original structure that was built in 1926 by Aven Hanford and Oscar Klatt, who went on to build the original span of the Carquinez Bridge.
Concrete deck girder bridge over San Joaquin River on State Route 160
Open to traffic

Anton Anderson Memorial Tunnel (Anchorage, Alaska)
Built 1943, converted to combined railroad and highway tunnel 1998-2000
Tunnel under Maynard Mountain on Portage Glacier Highway and Alaska Railroad
Open to traffic

Apalachicola River Bridge (Calhoun County, Florida)
Built 1938; rehabilitated 1998
Through truss bridge over Apalachicola River on FL 20
Open to traffic

Arthur J. Ravenel Jr. Bridge (Charleston County, South Carolina)
Built 2005, replacing the John P Grace and Silas S Pearman bridges
Cable-stayed bridge over Cooper River on US 17
Open to traffic

Astoria-Megler Bridge (Clatsop County, Oregon)
Built 1966
Continuous rigid-cantilever Warren through truss bridge over Columbia River on US 101 in Astoria
Open to traffic

Astoria-Megler Ferry (Clatsop County, Oregon)
Established 1921, Acquired by Oregon Highway Department 1946, Eliminated 1966
Lost Ferry across Columbia River on U.S. 101
Replaced by the Astoria-Megler Bridge

Atchafalaya Basin Bridge (St. Martin Parish, Louisiana)
Built 1971
Pair of 16+ mile bridges over the Atchafalaya Basin on I-10
Open to traffic

Atlantic Cement Bridge (Albany County, New York)
Built 1964
Pratt through truss bridge over Rte 9w , on Atlantic Cement
In use

Audubon Bridge (Pointe Coupee Parish, Louisiana)
Built 2011
Cable-stayed bridge over Mississippi River on LA 10
Open to all traffic

Baltimore Harbor Tunnel (Baltimore, Maryland)
Tunnel under Patapsco River on I-895
Open to traffic

BART - Berkeley Hills Tunnel (Alameda County, California)
Bore completed in 1967, Open for revenue in 1973 they run just north of the Caldecott tunnels
Tunnel under Berkeley Hills on BART (Bay Area Rapid Transport)
Open to traffic

BART - Transbay Tube (San Francisco County, California)
Built 1969; Opened 1974
Tunnel under San Francisco Bay on BART
Open to traffic

Bay St Louis Bridge (Hancock County, Mississippi)
Built in 2007 to replace an earlier structure destroyed by Hurricane Katrina
Concrete deck girder bridge over Bay of St Louis on US Hwy 90
Open to traffic

Bay St Louis Bridge (Hancock County, Mississippi)
Built 1953; Destroyed by Hurricane Katrina in 2005
Lost Bridge over Bay St Louis on US-90
Replaced by a new bridge

Bayonne Bridge (Hudson County, New Jersey)
Built 1931
Steel through arch bridge over Kill Van Kull between Bayonne and Staten Island
Toll bridge open to traffic

Baytown Tunnel (Harris County, Texas)
Built 1953, Closed 1995, Demolished 1997-1999 due to the deepening of the Houston Ship Canal
Lost Tunnel under Houston Ship Channel on TX 146
Replaced a new bridge

Benjamin Franklin Bridge (Philadelphia County, Pennsylvania)
Built 1926; rehabilitated 1984
Suspension bridge over Delaware River on I-676/US 30 in Philadelphia
Open to traffic

Betsy Ross Bridge (Philadelphia County, Pennsylvania)
Built 1973
Truss bridge on NJ 90 over Delaware River, Richmond Street, River Road, Hedley Street
Open to traffic

Big Bend Tunnel (Summers County, West Virginia)
built from 1870-1872 by C&O RR to cut off Big Bend. Legend/tradition names this tunnel as scene of 'Steel Driving Man' John Henry's race with steam drill
Original tunnel built to bypass an 8 mile long bend in the Greenbrier River. Passes between Hilldale, and Talcott West Virginia.
Intact but closed to all traffic

Big Spanish Channel Bridge (Monroe County, Florida)
Built 1972
Stringer bridge over Big Spanish Channel on Sr-5 (Us-1) Nb
Open to traffic

Biloxi Back Bay Bridge (Harrison County, Mississippi)
Built 1973
Bridge over Biloxi Back Bay on I-110
Open to traffic

Blue Water Bridge (St. Clair County, Michigan)
Built 1938; rehabilitated 1999
Through truss bridge over St. Clair River on Westbound I-94 in Port Huron
Open to traffic

Blue Water Bridge (St. Clair County, Michigan)
Built 1997
Steel through arch bridge over St Clair River on I-94 EB
Open to traffic

BNSF - Cascade Tunnel (King County, Washington)
Longest rail tunnnel in the US, finished in 1929 to bypass old tunnel, switchbacks, and 1.7% grade
Tunnel under Cascade Mountains on BNSF Railway (former Great Northern Railway)
Open to traffic

BNSF - Flathead Tunnel (Lincoln County, Montana)
Built 1970
Tunnel on BNSF Kootenai River Subdivision
Open to traffic

BNSF - Lake Pend Oreille Bridge (Bonner County, Idaho)
"Built by Northern Pacific railroad in 1882"; "Rebuilt for the first time in 1905"; ."Another rebuilt program was done in 2008, when BNSF railway replaced a dozen support wooden piers at the north end."
Bridge over Pend Oreille Lake on Railroad (BNSF)
Open to traffic

BNSF - Stampede Tunnel (Kittitas County, Washington)
Tunnel opened in May of 1888, forced-air ventilation added later
Tunnel under the Cascade Mountains just south of Snoqualmie Pass on BNSF Railway (former Northern Pacific Railway)
Open to traffic

BNSF - Tunnel 1 (Contra Costa County, California)
Built 1917
Tunnel on BNSF RR
Open to traffic

Bonnet Carre Bridge (St. Charles Parish, Louisiana)
Built 1935
Concrete tee beam bridge over Bonnet Carre Spillway on US-61
Open to traffic

Braga Bridge (Bristol County, Massachusetts)
Built 1965; rehabilitated 1989
Through truss bridge over Taunton River on I-195 in Fall River
Open to traffic

Broad River Bridge (Beaufort County, South Carolina)
Built 2004
Stringer bridge over Broad River on SC 170
Open to traffic

Broad River Draw Bridge (Beaufort County, South Carolina)
Built 1958; replaced 2004
Lost swing bridge over Broad River Draw Bridge on SC 170
used as a fishing pier

Bronx Whitestone Bridge (Bronx County, New York)
Opened to traffic April 29, 1939
Suspension bridge over East River on I-678 in New York
Open to six lanes of traffic

Brooklyn Bridge (Kings County, New York)
Opened to traffic May 24, 1883
Suspension bridge over East River between Manhattan and Brooklyn in New York
Open to traffic

Brooklyn-Battery Tunnel (New York County, New York)
Built 1940-1950
Tunnel under East River on Interstate 478
Open to traffic

Brookport Bridge (Massac County, Illinois)
Built 1929
Ten-span through truss bridge on US 45 over the Ohio River at Brookport
Open to two-lane traffic

Broughton Flume (Skamania County, Washington)
Built 1913; Abandoned 1986
Abandoned timber stringer bridge over Rocks on Water
Abandoned

Busk-Ivanhoe Tunnel (Pitkin County, Colorado)
Built 1891; Converted to highway use 1922; Closed to traffic 1943; Collapsed 1945
Tunnel
Closed

Cairo Ohio River Bridge (Alexander County, Illinois)
Built 1937; rehabilitated 1979
Cantilevered through truss over the Ohio River on US 51/60/62 between Cairo, Illinois and Wickliffe, Kentucky
Open to two-lane traffic

Castleton-on-Hudson Bridge (Rensselaer County, New York)
Built 1958; rehabilitated 1994; closed for emergency repairs June 2017; reopened July 2017
Cantilevered through truss bridge over Hudson River on Berkshire Spur
Open to traffic

Cayuga Long Bridge (Cayuga County, New York)
Built 1800
Lost Bridge over Cayuga Lake on trail
Removed but not replaced

Chesapeake Bay Bridge (Anne Arundel County, Maryland)
Original two-lane spans with through-truss suspension bridge and regular cantilever design built 1949-52 and opened 1952; second three-lane span with deck suspension and arched cantilever opened 1973; rehabilitated 1988
Pair of suspension and cantilever truss bridges over Chesapeake Bay on US 50
Open to traffic

Chesapeake Bay Bridge-Tunnel (Northampton County, Virginia)
Northbound lanes built 1964; Soutbound lanes built 1995-9
Bridge-tunnel over/under Chesapeake Bay on US 13
Open to traffic

Chowan River Bridge (Bertie County, North Carolina)
Built 1953
Lost swing truss bridge over Chowan River on US-17
Replaced by a new bridge

Chowan River Bridge (Bertie County, North Carolina)
Built 1999
Steel stringer bridge over Chowan River on US 17
Open to traffic

Clark Avenue Bridge (Cuyahoga County, Ohio)
Built 1912; Removed 1985
Pratt through truss bridge over Cuyahoga River on Clark Avenue
Removed

Cline Avenue Bridge (Lake County, Indiana)
Built 1982-83, closed to traffic in November 2009, Demolished February 12, 2011
Box girder bridge over Indiana Harbor and Ship Canal on Cline Avenue
Replaced by a new bridge

CN - Bonnet Carre Spillway Trestle (St. Charles Parish, Louisiana)
11754 foot long Timber stringer bridge over Lake Ponchartrain on CN RR
Open to traffic

CN - Tunnel #2 (Pope County, Illinois)
Built 1927
Tunnel on CN (formerly IC) Railroad near Abbot
Open to traffic

CNJ - Newark Bay Lift Bridge (Union County, New Jersey)
Built 1926; site of Newark Bay Bridge Accident in 1948; damaged in ship collision 1966; railroad abandoned 1976; lift spans demolished 1980, approach spans demolished 1988
Lost vertical lift bridge over Newark Bay on the Central Railroad of New Jersey
Removed

Cochrane-Africatown Bridge (Mobile County, Alabama)
Built 1991; Named after the Cochrane Bridge, which it replaced, and the former Africatown Community it reached on the western shore
3-span cable-stayed suspension bridge over Mobile River on U.S. 90 and U.S. 98 Truck Route
Open to traffic

Collins Bridge (Miami-Dade County, Florida)
Built 1913; Replaced 1925 by Venetian Causeway
Lost Lattice truss bridge over Biscayne Bay on NE 15th Street
Replaced by a new bridge

Commodore Barry Bridge (Gloucester County, New Jersey)
Built 1974
Cantilevered through truss bridge over Delaware River on US 322
Open to traffic

Conde B. McCullough Memorial Bridge (Coos County, Oregon)
Built 1936, Rehabilitation 2008
Steel cantilevered through truss bridge over Coos Bay on US 101 in North Bend
Open to traffic

Corpus Christi Harbor Bridge (Nueces County, Texas)
Built 1959; rehabilitated 1987; closed due to damage from Hurricane Harvey in August 2017; reopened October 2017
Steel through truss arch bridge over Corpus Christi Ship Channel on US 181 in Corpus Christi
Open to traffic

Courtney Campbell Causeway (Hillsborough County, Florida)
Commissioned by Ben T. Davis, work began in 1927 and completed in 1934
Bridge over Old Tampa Bay on State Route 60
Open to traffic

Creek Top Road (Pottawattamie County, Iowa)
Built 1937
Culvert bridge over Indian Creek on Creek Top Road
Open to traffic

CSX - Henderson Bridge (Henderson County, Kentucky)
Built 1932 by the American Bridge Co. , replacing an earlier 1885 bridge
Through truss bridge over the Ohio River on CSX Railroad in Henderson
Open to traffic

CSX - James River Viaduct (Richmond, Virginia)
Built 1901 by C&O Railway
Deck plate girder bridge over James River/RR/many streets on CSXTRR
Open to traffic

CSX - Louisville Viaduct (Jefferson County, Kentucky)
Built 1936-37
Girder bridge over city of louisville on CSX (formerly L&N Railroad)
Open to traffic

CSX - Ohio River Bridge (Parkersburg) (Wood County, West Virginia)
Crosses Ohio River between Parkersburg, WV, and Belpre, OH. Constructed between 1868-1870 by B&O railroad. Longest in world upon completion at 7140 feet.
Through truss bridge over Ohio River on CSX Railroad
Open to traffic

CSX - Sandy Ridge Tunnel (Dickenson County, Virginia)
Built 1914 as part of the Elkhorn Extension, the last 35 miles of the railroad built between Elkhorn City, Kentucky and Spartanburg, South Carolina
Tunnel under Sandy Ridge (Tennessee Valley Divide) on CSX Railroad (formerly Clinchfield Railroad)
Tunnel is open to rail traffic, vented in two locations on Sandy Ridge

CSX - Savannah River Bridge (Effingham County, Georgia)
Pratt through truss over Savannah River on former CSX Railroad
Open to traffic

CSX - Susquehanna River Bridge (Harford County, Maryland)
Built 1907-09 by Baltimore & Ohio RR as double-track bridge and opened January 6, 1910, later single-tracked
Through and deck truss bridge over Susquehanna on railroad
Open to traffic

CSX - Triple Crossing Viaduct (Richmond, Virginia)
Built by the C&O Railway in 1901 to link the former Richmond and Allegheny Railroad with C&O's Peninsula Subdivision to Newport News
Deck plate girder bridge over single track of CSX Transportation (mid level) and Norfolk Southern Railway (ground level) on double track of CSX Transportation (former Chesapeake and Ohio Railway) in Richmond
Open to traffic

Dames Point Bridge (Duval County, Florida)
Built 1989
Cable-stayed bridge over St. Johns River on FL 9A in Jacksonville
Open to traffic

Delaware Memorial Bridge (1951 Eastbound) (New Castle County, Delaware)
Built 1951; rehabilitated 1970
Suspension bridge over Delaware River on Eastbound I-295/US 40
Open to traffic

Delaware Memorial Bridge (1968 Westbound) (New Castle County, Delaware)
Built 1968 as an almost identical twin to the 1951 Delaware Memorial Bridge that carries northbound traffic
Suspension bridge over Delaware River on Westbound I-295/US 40
Open to traffic

Denison-Harvard Viaduct (Cuyahoga County, Ohio)
Built 1910; replaced 1978
Lost Deck truss bridge over Cuyahoga River, Railroads & Jennings Road on Denison Avenue
Replaced by a new bridge

Don Holt Bridge (Berkeley County, South Carolina)
Built 1992
Continuous Warren box truss bridge over Cooper River on I-526
Open to traffic

East River Mountain Tunnel (Bland County, Virginia)
Built 1974
Tunnel under East River Mountain on I-77
Open to traffic

Eisenhower Tunnel (Summit County, Colorado)
Constructed started March 15, 1968; tunnel opened March 8, 1973
Tunnel on I-70 Westbound at Loveland Pass
Open to traffic

Elysian Viaduct (Harris County, Texas)
Built 1954
Steel stringer bridge over Buffalo Bayou on Elysian Street
Open to traffic

Evergreen Point Floating Bridge (King County, Washington)
Built 1963, replaced by new six-lane floating bridge in 2016
Pontoon bridge over Lake Washington on SR 520
Replaced by a new bridge

First Cairo Railroad Bridge (Alexander County, Illinois)
Built 1889 under engineer George S. Morison; replaced 1949-52
Lost through and deck truss bridge over the Ohio River carrying the Illinois Central Railroad in Cairo
Replaced by the current bridge, reusing many of the piers in the process

Fort George Tunnel (New York County, New York)
Built 1903
Tunnel on New York City Transit Authority
Open to traffic

Fort McHenry Tunnel (Baltimore, Maryland)
Built 1980-1985
Tunnel under Patapsco River on I-95 SB/NB
Open to traffic

Francis Scott Key Bridge (Baltimore, Maryland)
Built 1976
Steel through arch bridge over Patapsco River/Baltimore Harbor on Maryland Route 695 (Interstate 695)
Open to traffic

Fred Hartman Bridge (Harris County, Texas)
Built 1995
Pair of cable-stayed bridges over Houston Ship Channel on TX 146 in Houston
Open to traffic

Galveston Bay Bridge (NB) (Galveston County, Texas)
Built 1964; Replaced 2006
Steel stringer bridge over Galveston Bay on Interstate 45
Replaced by a new bridge

Galveston Bay Bridge (SB) (Galveston County, Texas)
Built 1959; Replaced 2007
Steel stringer bridge over Galveston Bay on Ih45 Sb
Replaced by a new bridge

Galveston Bay Wagon Bridge (Galveston County, Texas)
Built 1893; Destroyed by the 1900 Hurricane
Pratt through truss swing bridge over Galveston Bay on Road
Destroyed by severe weather

General W.K. Wilson, Jr. Bridge (Mobile County, Alabama)
Built 1978
Through arch bridge over Mobile River on I-65
Open to traffic

George C. Platt Bridge (Philadelphia County, Pennsylvania)
Built 1949; rehabilitated 1984
Cantilevered through truss bridge over Schuylkill River on PA 291 (Penrose Avenue) in Philadelphia
Open to traffic

George Rogers Clark Memorial Bridge (Jefferson County, Kentucky)
Built 1929 by the American Bridge Co.; tolls removed 1946; rehabilitated 1958
Cantilevered through truss bridge over Ohio River on US 31 between Louisville and Jeffersonville
Open to traffic

GN - Old Cascade Tunnel (King County, Washington)
The Original Cascade Tunnel was finished in 1900 and was built to replace a series of 8 switchbacks used to get over the mountains. Deadliest avalanche in US history occurred March 1, 1910 at Wellington (western portal). 96 people killed.
Abandoned tunnel under the Cascade Mountains on abandoned Great Northern Railway grade
Abandoned

Gold Star Memorial Bridge (New London County, Connecticut)
Built 1943; twin span built 1973
Pair of deck truss bridges over Thames River on I-95/US 1 in New London
Open to traffic

Golden Gate Bridge (San Francisco County, California)
Built 1937
Suspension bridge over San Francisco Bay on US 101 at San Francisco
Open to traffic

Great South Bay Bridge (Suffolk County, New York)
Built 1951
Through truss bridge over Great South Bay on Robert Moses Causeway
Open to traffic

Great South Bay Bridge (Suffolk County, New York)
Built 1967 as a wider twin to the 1951 Great South Bay bridge
Steel through arch bridge over Great South Bay on Rte 908j
Open to traffic

Greenville Bridge (Chicot County, Arkansas)
Built 2010
Cable-stayed bridge over Mississippi River on US 82
Opened August 4, 2010

Greenville-Lake Village Bridge (Chicot County, Arkansas)
Opened to traffic Sept. 17, 1940; Closed to all traffic August 4, 2010 ; Demolished 2011
Cantilevered Warren through truss bridge over the Mississippi River on US 82 between Greenville and Lake Village
No Longer Exists Western Portal pillars and markers still in place.

Hampton Roads Bridge-Tunnel (Hampton, Virginia)
Buil 1957 (WB), Built 1976 (EB)
Tunnel under Hampton Roads on Hampton Roads Beltway/US60/I-64
Open to traffic

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