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Over a mile long

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Alaskan Way Viaduct (King County, Washington)
Built 1952; rehabilitated 1957
Stringer bridge over City Streets & Railroad on WA 99
Open to traffic

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

Albemarle Sound Trestle (Chowan County, North Carolina)
Built 1910 for the Suffolk and Carolina Railway, demolished ca. 1987
Lost Timber stringer bridge over Albemarle Sound on Norfolk Southern Railway
Removed

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
Swing bridge over Alligator River on US 64
Open to traffic

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

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

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

B.N.S.F. - 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

B.N.S.F. - 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)


Baltimore Harbor Tunnel (Baltimore, Maryland)
Tunnel under Baltimore Harbor on I-895
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

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

Berkshire Spur Bridge (Rensselaer County, New York)
Built 1958; rehabilitated 1994
Through truss bridge over Hudson River on Berkshire Spur
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

Biloxi Back Bay Bridge (Harrison County, Mississippi)
Built 1973
Bridge over Biloxi Back Bay on I-110
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 Draw Bridge (Beaufort County, South Carolina)
Built 1958; replaced 2004
Lost swing bridge over Broad River Draw Bridge on SC 170
No longer exists

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

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

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

Calcasieu River I-10 Bridge (Calcasieu Parish, Louisiana)
Built 1952
Through truss bridge over Calcasieu River on I-10 in Lake Charles
Open to traffic

Chesapeake and Ohio Railway 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

Chesapeake Bay Bridge (Anne Arundel County, Maryland)
Built 1951; rehabilitated 1988
Pair of suspension and cantilever truss bridges over Chesapeake Bay on US 50
Open to traffic

Chesapeake Bay Bridge (Northampton County, Virginia)
Built 1964
Stringer bridge over Chesapeake Bay on Route 13 Nbl
Open to traffic

Chesapeake Bay Bridge (Northampton County, Virginia)
Built 1964
Concrete tee beam bridge over Chesapeake Bay on Route 13 Nbl
Open to traffic

Chesapeake Channel Bridge Tunnel (Northampton County, Virginia)
Built 1964
Tunnel under Chesapeake Channel on Route 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

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

CNW Mississippi River Bridge (Winona) (Winona County, Minnesota)
Built in 1871; Rebuilt in 1872 after the bridge collapsed; made redundant in 1971; Closed to traffic in 1977; main span removed in 1990
Lost through truss bridge over Mississippi River on Chicago and Northwestern Railroad
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

Columbia-Wrightsville Lincoln Highway Bridge (Lancaster County, Pennsylvania)
Built 1929; rehabilitated 1988
Open-spandrel arch bridge over Susquehanna River on PA 462 (Old Lincoln Highway) between Columbia and York Counties
Open to traffic

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

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

Corpus Christi Ship Channel Bridge (Nueces County, Texas)
Built 1959; rehabilitated 1987
Through truss 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

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 (Chatham County, Georgia)
Deck plate girder bridge over Savannah River on former Atlantic Coast Line Railroad
Open to traffic

CSX Susquehanna River Bridge (Harford County, Maryland)
Built 1907
Through and deck truss bridge over Susquehanna on railroad
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 River Memorial Bridge (New Castle County, Delaware)
Built 1951; rehabilitated 1970
Suspension bridge over Delaware River on I 295 N & Us 40 E
Open to traffic

Dumbarton Railroad Bridge (Alameda County, California)
Built 1910, last used 1982.
Abandoned baltimore through truss bridge over San Francisco Bay on Caltrain
Abandoned

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)
Built 1973
Tunnel under I 70 Wbnd Ml on Eisenhower Tun Wbd


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

Escambia River Interstate Bridge (Santa Rosa County, Florida)
Built 2006
Concrete deck girder bridge over Escambia River Bay on Interstate 10
Open to traffic

Evergreen Point Floating Bridge (King County, Washington)
Built 1963
Pontoon bridge over Lake Washington on SR 520
Open to traffic

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

First Tacoma Narrows Bridge (Pierce County, Washington)
Built 1940, collapsed on November 7, 1940
Lost suspension bridge over Tacoma Narrows on Primary State Highway 14-A in Tacoma
Collapsed

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

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

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 Northern Railway 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

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

Harry W. Nice Memorial Bridge (Charles County, Maryland)
Built 1939; rehabilitated 1984
Through truss bridge over Potomac River on US 301
Open to traffic

Harvey Canal/Sts/RR Bridge (Jefferson Parish, Louisiana)
Built 1987
Beam bridge over Harvey Canal/Sts/Rr on US-90 BUS
Open to traffic

Hell Gate Bridge (Queens County, New York)
Originally the world's longest steel arch bridge until the Bayonne Bridge was opened in 1932
Steel through arch bridge over Hell Gate (East River)
Open to traffic

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

Herbert C. Bonner Bridge (Dare County, North Carolina)
Built 1962
Steel stringer bridge over Oregon Inlet on NC 12
Open to traffic

Hernando DeSoto Bridge (Shelby County, Tennessee)
Built 1973
Two-span steel through arch bridge over the Mississippi River on I-40 at Memphis
Open to traffic

High Line Elevated Park (New York County, New York)
Opened 1934; Abandoned in 1980; Faced threats of demolition in the mid-1980s and again during the Guliani administration; Conversion into a park began in 2006; Section I opens in 2009; Section II opens in 2011
Park built on steel stringer bridges over city streets
Open to pedestrians only

Homer M. Hadley Memorial Bridge (King County, Washington)
Built 1989
Pontoon bridge over Lake Washington on W.B. & Rev I-90
Open to traffic

Hood Canal Bridge (Kitsap County, Washington)
Built 1961, Sank 1979, Reopened 1982, East half replaced 2009
Pontoon bridge over Hood Canal on WA 104
Open to traffic

Hoosac Tunnel (Berkshire County, Massachusetts)
Longest tunnel built at its time, 194 killed during construction, most important piece of railroad history.
Tunnel under Hoosac Mountains on Western Railroad
Open with daily traffic

Howard Frankland Bridge (Pinellas County, Florida)
Original bridge opened in 1960 and only carried four lanes. New Southbound bridge opened in 1991
Bridge over Old Tampa Bay on I-275
Open to traffic

Huey P. Long Bridge (Baton Rouge) (East Baton Rouge Parish, Louisiana)
Built 1940
Cantilevered through truss bridge over the Mississippi River on US 190 in Baton Rouge
Open to traffic

Huey P. Long Bridge (Jefferson Parish) (Jefferson Parish, Louisiana)
Opened to traffic December 16, 1935
Cantilevered through truss bridge over the Mississippi River on US 90 in Jefferson
Open to traffic

I-10 Pontchartrain Bridge (Orleans Parish, Louisiana)
Built 1963. Heavily damaged by Hurricane Katrina in 2005. Repaired 2006 with Bailey Pony Truss sections added to westbound span. Traffic routed to new span in 2010.
Steel stringer bridge over Lake Pontchartrain on Interstate 10


I-55 Bridge (St. John the Baptist Parish, Louisiana)
Built 1975
Stringer bridge over I-10 & US-51 & Swamp on I-55
Open to traffic

I-680 Bridge (old) (Contra Costa County, California)
Built 1962; rehabilitated 1991
Deck truss bridge over Sacramento River and railroad tracks on I-680 S in Benicia and Martinez
Open to traffic

IA14 Red Rock Bridge (Marion County, Iowa)
Built 1965
Girder bridge over Des Moines River & Res. on IA 14
Open to traffic

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

Illinois River I-39 Bridge (La Salle County, Illinois)
Built 1987
Steel through arch bridge over the Illinois River on I-39/US 51 near La Salle in Oglesby
Open to four lanes of traffic

International Bridge (Chippewa County, Michigan)
Built 1963
Cantilevered arch bridge over St. Mary River on I-75 at Sault Ste. Marie
Open to traffic

Intracoastal Canal Bridge (St. Mary Parish, Louisiana)
Built 2005
Bascule bridge over Intracoastal Canal on LA 319
Open to traffic

James River Bridge (Isle of Wight County, Virginia)
Built 1980
Vertical lift bridge over James River on US 17 in Newport News
Open to traffic

Jamestown Bridge (Old) (Newport County, Rhode Island)
Built 1940
Through truss bridge over West Passage Narragansett Bay on RI 138 in Jamestown
Replaced by new bridge

John P. Grace Memorial Bridge (Charleston County, South Carolina)
Grace bridge built in 1928
Lost cantilevered truss bridge over the Cooper River on US 17
Replaced by Arthur J Ravenel Bridge in 2005

Johnson Tunnel (Summit County, Colorado)
Built 1979
Tunnel under I 70 Ml Ebnd on Johnson Tun Ebnd


Julien Dubuque Bridge (Dubuque County, Iowa)
Built 1943; rehabilitated 1992
Steel through arch bridge over the Mississippi River on US 20 at Dubuque
Open to traffic

Kingston-Rhinecliff Bridge (Ulster County, New York)
Built 1957; rehabilitated 2002
Deck truss bridge over Hudson River on NY 199
Open to traffic

Knight Channel Bridge (Monroe County, Florida)
Built 1912; rehabilitated 1938
Girder bridge over Knight Channel on Pigeon Key Access
Closed to all traffic

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

LA Hwy 47/Paris Road Bridge (Orleans Parish, Louisiana)
Built 1967
Steel through arch bridge over Gulf Intercoastal Waterway on LA Highway 47 (Paris Road)
Open to traffic

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