There are 14,369 bridges in this category · Only showing 7,261 bridges with photos
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Beam

Illinois Road Bridge (Mercer County, Missouri)
Built 1930
Timber stringer bridge over Union Pacific Railroad on Illinois Road (CR 230)
Open to traffic

Illinois Terminal - Camp Creek Bridge (Piatt County, Illinois)
Collapsed due to deterioration
Lost Timber stringer bridge over Camp Creek on Illinois Terminal RR
Collapsed

Illinois Terminal - East St. Louis Viaduct (St. Clair County, Illinois)
(Main design: Pennsylvania through truss)
Removed 1932
Lost Pennsylvania through truss bridge over Railroad on Illinois Terminal System
Removed

Illinois Terminal - Georgetown Bridge (Vermilion County, Illinois)
Built ca. 1901
Lost Timber bridge over Little Vermilion River on former Illinois Traction south of Georgetown
Lost

Illinois Terminal - Possum Trot Bridge (Vermilion County, Illinois)
Lost Timber stringer bridge over Middle Fork Vermilion River on Illinois Traction System west of Danville
Removed

Illinois Terminal - Venice Trestle (Madison County, Illinois)
(Main design: Warren through truss)
Built 1910; Wood trestle destroyed by fire and collapsed 1990s; Portions of burned trestle removed ca. 2004; Steel trestle removed 2006-2007; Truss bridge removed late 2008.
Lost Stringer and Truss bridge over various streets on former Illinois Terminal Railroad approach to McKinley Bridge
Abandoned, with most of the structure removed

Illinois Traction/Wabash Overpass (Old) (Piatt County, Illinois)
(Main design: Pratt through truss)
Built 1907; Replaced 1928/29
Lost Pratt through truss bridge over Wabash Railroad on Illinois Traction System
Replaced by a new bridge

IMRR - Sangamon Avenue Overpass (Sangamon County, Illinois)
Steel stringer bridge over Sangamon Avenue on Illinois Midland Railroad
Open to railroad traffic above and automotive traffic below

IMRR - Sangamon River Bridge (Sangamon County, Illinois)
(Main design: Warren through truss with sub-panels)
Through truss bridge over Sangamon river on Illinois Midland Rwy
Open to traffic

IMRR - Tar Creek Branch Bridge (Menard County, Illinois)
Timber stringer bridge over Tar Creek Tributary on Chicago & Illinois Midland Ry
Open

IMRR - Tar Creek Bridge (Menard County, Illinois)
Timber stringer bridge over Tarr Creek on Chicago & Illinois MIdland Ry
Open

IND 5/Old SR 221 Walnut Creek Bridge (Grant County, Indiana)
Replaced 1995
Lost Concrete tee beam bridge over Walnut Creek on Indiana SR 5/ former SR 221
Replaced by new bridge

Independence Bridge (Montgomery County, Kansas)
Built 1940
Bridge over S 20th St, MoPac RR on US 160 / 75 in Independence
Open to traffic above and below

Independence Street Bridge (Cass County, Missouri)
Built 1920
Concrete tee beam bridge over Town Creek on Independence Street in Harrisonville
Open to traffic

Indian Creek Bridge (Lane County, Oregon)
Built 1929
Concrete stringer bridge over Indian Creek on OR 36
Open to traffic

Indian Creek Bridge (Grant Parish, Louisiana)
Built 1938
Steel stringer bridge over Indian Creek on La0472
Open to traffic

Indian Creek bridge (Humboldt County, Iowa)
Beam bridge over Indian Creek on Kansas Avenue
Replaced

Indian Creek bridge (Humboldt County, Iowa)
Steel stringer bridge over Indian Creek on Juniper Avenue
Replaced by box culvert

Indian Creek Bridge (Humboldt County, Iowa)
Steel stringer bridge over Indian Creek on Georgia Avenue.
Open to traffic

Indian Creek Bridge (Humboldt County, Iowa)
Steel stringer bridge over Indian Creek on 260th Street
Open to traffic

Indian Creek Bridge (Tishomingo County, Mississippi)
Built 1940
Concrete tee beam bridge over Indian Creek on Sr 172
Open to traffic

Indian Creek Bridge (LaSalle County, Illinois)
Built 1920; rehabilitated 1982
Beam bridge over Indian Creek on E 20th Rd
Open to traffic

Indian Creek Bridge (Grant County, Oregon)
Built 1939
Stringer bridge over Indian Creek on US 26
Open to traffic

Indian Creek Bridge (Madison County, Alabama)
Built 1940
Masonry concrete tee beam bridge over Indian Creek on Slaughter Road
Open to traffic

Indian Creek Bridge (Lee County, Virginia)
Steel stringer bridge over Indian Creek on Route 692
Open to traffic

Indian Creek Bridge (Washington County, Missouri)
Bridge over Indian Creek on Union Pacific Railroad
Intact but closed to all traffic

Indian Lane Bridge (Westchester County, New York)
Built 1930
Wooden bridge over Truesdale Lake Outlet on Indian Lane
Open to traffic

Indian River Inlet Bridge (1934) (Sussex County, Delaware)
Built 1934, replaced 1938
Lost Timber stringer bridge over Indian River Inlet on Coastal Highway
Destroyed by severe weather

Indian Trace Creek Bridge (Morgan County, Indiana)
Built 1926
Steel stringer bridge over Indian Trace Creek on Mahalasville Road
Open to traffic

Indiana Army Ammunition Plant Pedestrian Walk (Clark County, Indiana)
Lost Steel stringer bridge over Indiana 62 on Pedestrian Path
Removed but not replaced

Indiana Avenue Norfolk and Western Railway Bridge (Forsyth County, North Carolina)
Built 1930
1930 Steel stringer bridge


Indiana Avenue Southern Railway Bridge (Forsyth County, North Carolina)
(Main design: Deck plate girder)
Built 1928
1928 Deck plate girder bridge over Indiana Ave on NSRR
Open to traffic

Indiana Rail Road over CR 50 N Bridge (Sullivan County, Indiana)
Steel stringer bridge over CR 50 N on Indiana Rail Road
Open to traffic

Indiana Railroad - Wildcat Creek Deck Truss (Tippecanoe County, Indiana)
(Main design: Pratt deck truss)
Lost Pratt deck truss bridge over Wildcat Creek on Indiana Railroad
Removed but not replaced

Indianapolis Museum of Art East Bridge (Marion County, Indiana)
Built over the Terre Haute, Indianapolis & Eastern Traction Company's line from Indy to Lafayette. Line was abandoned in 1930's.
Steel stringer bridge over abandoned interurban railbed on Woodstock Drive near the Indianapolis Museum of Art in Indianapolis
Open to traffic

Inglehart Road Bridge (Columbia County, Wisconsin)
Built 1930
Timber stringer bridge over Union Pacific Railroad (Formerly Chicago & Northwestern) on Inglehart Road in Town of Scott
Open to traffic

Ingleside Road Norfolk Southern Railway Bridge No. 1 (Mercer County, West Virginia)
Built 1920
Steel stringer bridge over Ingleside Rd; East River on NSRR
Replaced by a new bridge

Ingram Slough Bridge (Benton County, Oregon)
(Main design: Polygonal Warren pony truss)
Built 1963
Polygonal Warren pony truss bridge over Ingram Slough on E. Ingram Island Road
Open to traffic

INPR - Willow Creek Trestle (Union County, Oregon)
Timber stringer bridge over Willow creek
Timber trestle over willow creek

INPR Wright Slough bridge (Union County, Oregon)
Timber stringer bridge over WRight Slough on INPR railroad
Open to traffic

INRD - Beech Street Trestle (Vigo County, Indiana)
Rehabilitated in 2003
Timber stringer bridge over Beech Street and Lost Creek on Indiana Rail Road
Open to traffic

INRD - CR 410N Overpass (Greene County, Indiana)
Built ca. 1906
Concrete stringer bridge over CR 410N on Indiana Rail Road
Open to traffic

INRD - Elwren Underpass (Monroe County, Indiana)
Concrete stringer over West Elwren Road on Indiana Rail Road
Open to traffic

INRD - Lost Creek Trestle (Vigo County, Indiana)
Timber stringer bridge over Lost Creek on Indiana Rail Road in Terre Haute
Open to traffic

INRD - Richardson Road Overpass (Monroe County, Indiana)
Built ca. 1906
Timber stringer bridge over N. Richardson Road on Indiana Rail Road
Open to traffic

INRD - Wabash River Bridge (Vigo County, Indiana)
(Main design: Pratt through truss)
Pratt through truss bridge over Wabash River on Indiana Rail Road
Open to traffic

Inselruhe Avenue Bridge (Wayne County, Michigan)
Built 1901; Replaced 1999
Lost Steel stringer bridge over Nashua Canal on Inselruhe Avenue
Replaced by a new bridge

Inter-Urban Trail Bridge (Polk County, Iowa)
(Main design: Pratt through truss)
Built 1905, Abandoned 1982; Converted to trail use 1998, repaired 2012
Pratt through truss bridge over Des Moines River on Interurban Trail
Open to pedestrians

Intermediate River Bridge (Antrim County, Michigan)
Built 1931; rehabilitated 2000
Steel stringer bridge over Intermediate River on M-88
Open to traffic

International Peace Garden Bridge #2 (Rolette County, North Dakota)
Built 1934 by Civilian Conservation Corps
Log stringer bridge over Drainage on Peace Garden Road
Open to traffic

International Railway Co. - 18 Mile Creek Bridge (W) Lockport (Niagara County, New York)
(Main design: Deck plate girder)
Deck plate girder bridge over 18 Mile Creek on International Railway Co.
Abandoned

Interstate 5 McKenzie River Bridges (Lane County, Oregon)
Built 1957
Concrete tee beam bridge over McKenzie River on Interstate 5
Open to traffic

Interstate 55 Overpass (Livingston County, Illinois)
Bridge over Illinois Central Railroad on Interstate 55
Open

Interstate 70 Bridge over Chestnut Street (Washington County, Pennsylvania)
Built 1960; rehabilitated 1993
Steel stringer bridge over US 40 (W. Chestnut Street) on I-70
Open to traffic

Interstate 70 Pigeon Creek Bridge (Washington County, Pennsylvania)
Built 1949
Steel stringer bridge over Pigeon Creek and Wilson Road (SR 2040) on I-70
Open to traffic

Interstate 95 Brandywine Creek Bridge (New Castle County, Delaware)
Built 1964; rehabilitated 1984
Steel stringer bridge over Brandywine Creek on I-95
Open to traffic

Interstate Bridge (St. Louis County, Minnesota)
(Main design: Parker through truss)
Built 1897; Swing span struck and replaced 1906; replaced by Blatnik Bridge 1961, all but northern span removed 1970's
Parker through truss bridge over St. Louis River on Fishing pier (former railroad, US 53)
Open to pedestrians

Interstate Bridge (Marinette County, Wisconsin)
Bridge over Menominee River on Marinette County Highway K
Open to traffic

Intracoastal Waterway Bridge (Palm Beach County, Florida)
Built 1976
Stringer bridge over Intracoastal Waterway on Sr A1a
Open to traffic

Intracoastal Waterway Bridge (Indian River County, Florida)
Built 1970
Stringer bridge over Intracoastal Waterway on Sr-510(Wabasso Rd)
Open to traffic

Intracoastal Waterway Swing Bridge (Old) (Pinellas County, Florida)
(Main design: Through truss)
Lost Through truss bridge over Intracoastal Waterway on Florida Route 688
No longer exists replaced 1958

Intrepid Road Bridge (Macon County, Missouri)
Built ca. 1940
Wooden bridge over BNSF Railway on Intrepid Road
Open to traffic

IORY - Quincy High Bridge (Logan County, Ohio)
(Main design: Warren deck truss with alternating verticals)
Built 1911
Warren deck truss with alternating verticals bridge over Cr73 and Great Miami River on Dt&I Railroad
Open to traffic

Iowa River Bridge (Hardin County, Iowa)
Built 1936; rehabilitated 1999
Steel stringer bridge over Iowa River on Main Street
Open to traffic

Iowa River Rail Trail - Steamboat Rock Bridge (Hardin County, Iowa)
(Main design: Deck plate girder)
Built 1926; Abandoned 2012, Converted to Trail Use 2017
Deck Girder bridge over Iowa River on Iowa River Rail Trail
Open to pedestrians only

Iowa River Rail Trail - Summit Street Bridge (Marshall County, Iowa)
Built 1931
Abandoned steel stringer bridge over Summit Street on Iowa River Rail Trail
Intact but closed to all traffic

IR - Clear Creek Bridge (Kendall County, Illinois)
Steel stringer bridge over Clear Creek on Illinois Railway (former CB&Q)
Open to traffic

IR - Fox River Bridge (LaSalle County, Illinois)
(Main design: Pratt deck truss)
Pratt deck truss bridge over Fox River on Illinois Railway West of Sheridan
Open to traffic

IR - Fox River Bridge (Boulder Hill) (Kendall County, Illinois)
(Main design: Deck plate girder)
Built 1903, Approach added 1938
Steel stringer bridge over IL 25 & Fox River on Illinois Railway


IR - Fox River Road Overpass (Kendall County, Illinois)
(Main design: Pony/through plate girder)
Pony/through plate girder bridge over Fox River Rd on Illinois Railway (former CB&Q)
Open to traffic

IR - Hollenback Creek Trestle (Kendall County, Illinois)
Timber stringer trestle over Hollenback Creek on Illinois Railway (former CB&Q)
Open to traffic

IR - IL 25 Overpass (Kendall County, Illinois)
(Main design: Steel stringer)
Built 1935 as part of the CB&Q RR (Burlington Route)
Steel stringer bridge over Ill Rte 25 on Illinois Railway (former CB&Q)
Open to traffic

IR - Indian Creek Bridge (LaSalle County, Illinois)
(Main design: Deck plate girder)
Deck plate girder bridge over Indian Creek on Illinois Railway (former CB&Q)


IR - Morgan Creek Trestle (Kendall County, Illinois)
Timber stringer bridge over Morgan Creek on Illinois Railway (former CB&Q)
Open to traffic

IR - Muscatatuck River Bridge (Jackson County, Indiana)
(Main design: Pratt through truss)
Built 1907; Removed 1941
Lost Pratt through truss bridge over Muscatatuck River on Indiana Railroad
Removed

IR - Unnamed Creek Trestle (Kendall County, Illinois)
Timber stringer bridge over Unnamed Creek on Illinois Railway (former CB&Q)
Open to traffic

IR - Waubansee Creek Bridge (Kendall County, Illinois)
(Main design: Steel stringer)
Built in 1948
Steel stringer bridge over Waubansee Creek on Illinois Railway (former CB&Q)
Open to traffic

Irene Rd Kishwaukee River Bridge (De Kalb County, Illinois)
Built 2004
Stringer bridge over S Br Kishwaukee River on Irene Road
Open to traffic

Irigaray Bridge (Johnson County, Wyoming)
(Main design: Pennsylvania through truss)
Built 1913; moved & rehabilitated 1963;
Pennsylvania through truss bridge over Powder River on CR 254
Open to traffic

Irish Creek Bridge (Marshall County, Kansas)
Built ca. 1940
Girder and floorbeam system bridge over Irish Creek on 24th Terrace
Open to traffic

Iron Mountain Road Pigtail Bridge #2 (Pennington County, South Dakota)
Built 1992
Steel stringer bridge over US 16A, on US 16A
Open to traffic

Iron Mountain Road Pigtail Bridge #3 (Pennington County, South Dakota)
Built 1985
Steel stringer bridge over US 16A, on US 16A
Open to traffic

Ironton Bridge (Iron County, Missouri)
Built in 1926 by the Missouri State Highway Department; made obsolete in 1967 by a new alignment of MO 21
Tee beam bridge over Stouts Creek on Main Street (Old MO Highway 21) between Ironton and Arcadia
Open to traffic

ISC - Silver Creek Bridge (Clark County, Indiana)
(Main design: Pratt through truss)
Lost Pratt through truss bridge over Silver Creek on New Albany & Louisville Electric Railway
Removed

Islais Creek Bridge (San Francisco County, California)
Built 1945
Bascule bridge over Islais Creek on Third Street in San Francisco
Open to traffic

Island Park Trail - Genesee River Bridge (Allegany County, New York)
(Main design: Steel stringer)
Built ?; Abandoned 1972
Steel stringer bridge over Genesee River on Island Park Trail
Open to pedestrians only

Island Wooden Bridge (McLean County, Kentucky)
Built 1872 on KY 85 over the Owensboro-Nashville Railroad; relocated and rebuilt in Island Wooden Bridge Park in 2001
Timber stringer bridge on a pedestrian trail in Island Wooden Bridge Park
Open to pedestrians

Isle du Bois Creek Bridge (Ste. Genevieve County, Missouri)
Built 1924; bypassed by new alignment of US 61 in 1939
Concrete bridge over South Fork Isle du Bois Creek on Old TT Road (formerly US 61)
Open to traffic on a paved dead-end road

Isley Boulevard Bridge (Clay County, Missouri)
Built 1934, Replaced 2015
Concrete tee beam bridge over Fishing Creek on MO 10 (Isley Blvd.)
Replaced by a new bridge

ISRY - Abandoned 13th Street Bridge (Monroe County, Iowa)
Original 13' pile trestle bridge at this location built 1899; renewed 1934 with this bridge
Steel stringer bridge over closed street (13th St.) on Iowa Southern Railway
Open to rail traffic

Issaquah Creek Bridge (King County, Washington)
Built 1940
Stringer bridge over Issaquah Creek on NW Gilman Blvd.
Open to traffic

Italian Bar Road Bridge (Fresno County, California)
(Main design: Warren pony truss with all verticals)
Built 1925, rebuilt 1951
Warren Pony truss bridge over Redinger Lake on Italian Bar Road
Open to traffic

ITR - 11th Street Overpass (Floyd County, Iowa)
Lost Steel stringer bridge over 11th Street on Charles City Western
Removed

ITR - Flood Creek Bridge (Floyd County, Iowa)
Lost Timber stringer bridge over Flood Creek on Charles City Western
Removed

ITR - Little Cedar River Bridge (Floyd County, Iowa)
(Main design: Pony/through plate girder)
Built 1915; Removed 1964
Lost Pony plate girder bridge over Little Cedar River on Charles City Western
Removed

ITR/MILW Overpass (Floyd County, Iowa)
(Main design: Pony/through plate girder)
Built 1915; Abandoned 1964; Removed ?
Lost Pony plate girder bridge over Chicago, Milwaukee, St. Paul & Pacific Railroad on Charles City Western
Removed

J. D. Moore Memorial Covered Bridge 10-28-A (Cherokee County, Georgia)
Old steel stringer bridge from 1940s? covered in about 1998 as Memorial.
Covered steel stringer bridge over Shoal Creek on abandoned county road adjacent to Lost Town Trail
Closed to all traffic

J.D. Thompson Road NYC RR Overpass (Gibson County, Indiana)
Built 1920
Timber stringer bridge over Abandoned New York Central RR on J.D. Thompson Road
Open to traffic

Jack Peters Creek Bridge (Mendocino County, California)
Built 1939
Concrete stringer bridge over Jack Peters Creek on State Route 1
Open to traffic

Jack's Road Bridge (Lincoln County, Missouri)
Bridge over Bob's Creek on Jack's Road
Open to traffic