Center Pivot Swing Span
View Exhibit mapA center pivot Swing Span is a type of swing bridge where a large span is balanced across a swing pier, keeping equal weight on both sides. The span is continuous.
"I" Street Bridge (Yolo County, California)
Built 1911Swing through truss bridge over Sacramento River, carries railroad tracks and "I" Street in West SacramentoOpen to traffic
11th Street Bridge (Old) (Pierce County, Washington)
Built 1894; Replaced 1913Lost Pratt through truss bridge over Tacoma Narrows on East 11th StreetReplaced by a new bridge
20 Mile Bend Bridge (Palm Beach County, Florida)
Built 1937Warren through truss swing bridge over C-51 Canal on CR-880 (Canal Street)Open to traffic
AMTK - Spuyten Duyvil Bridge (New York County, New York)
Built 1900Baltimore through truss bridge swing bridge over Spuyten Duyvil Creek on Amtrak Empire CorridorRebuilt in 2018
Arsenal Bridge (1896) (Scott County, Iowa)
Built 1896, Rehabilitated 1983 & 1997Baltimore through truss bridge over Mississippi River on 2 lanes of traffic and 2 rail lines in DavenportOpen to traffic
Bacon Island Road Bridge (San Joaquin County, California)
Built 1906, moved to this location 1950, replaced 1995Swing bridge over Middle River on Bacon Island RoadLost, replaced by new bridge
Bacon Island Road South Bridge (San Joaquin County, California)
Built 1905Pratt through truss bridge over Middle River on S Bacon Island RoadOpen to traffic
Bay Farm Island Bridge (1898) (Alameda County, California)
Built 1898; replaced 1953Lost Polygonal Warren through truss bridge over San Leandro Bay on Bay Farm IslandReplaced by a new bridge
Bay St. Louis Rail Bridge (Harrison County, Mississippi)
Through truss swing bridge over Bay of St Louis on CSX RailroadOpen to traffic
Blackburn Point Bridge (Sarasota County, Florida)
Built 1925; rehabilitated 1995Swing bridge over Intracoastal Waterway on CR 789 in OspreyOpen to traffic
BN - 15th Street Bridge (Pierce County, Washington)
Built 1914; Abandoned 1973 due to damage from an erroneously routed Boeing load, likely removed shortly thereafter.Lost Pratt through truss bridge over Foss Waterway on Burlington Northern RailroadRemoved but not replaced
BN - Hoquiam River Bridge (Grays Harbor County, Washington)
Built 1915, Girder added 1938Abandoned through truss bridge over Hoquiam River on Abandoned Burlington Northern RailroadAbandoned
BNSF - Ebey Slough Bridge (Snohomish County, Washington)
Built 1906Swing bridge over Ebey Slough on BNSF Railroad, MP 38.37, Bellingham Subdivision.Open to traffic
BNSF - Nooksack River Bridge (Whatcom County, Washington)
Open deck through truss bridge over Nooksack River at Ferndale, WA. on BNSF Railroad, MP 105.7, Bellingham Subdivision.Open to traffic
BNSF - Oregon Slough Bridge (Multnomah County, Oregon)
Built 1908Swing span through truss bridge over Columbia River - Oregon Slough on BNSF Railway in PortlandOpen to traffic
BNSF - Snohomish River Bridge (Snohomish County, Washington)
Built 1922Warren through truss swing bridge over Snohomish River on BNSF RailwayOpen to traffic
Bridge Street Muskingum River Bridge (Muskingum County, Ohio)
Built 1953; rehabilitated 1979Lost through truss bridge over Muskingum River on Bridge Street between Philo and Duncan FallsReplaced by a new bridge
California & Oregon - Tehama Bridge (Tehama County, California)
Built 1871, "Washed out" 1881, Replaced 1898Lost Howe through truss bridge over Sacramento River on California & Oregon RailroadDestroyed by flood
Catching Slough Bridge (Coos County, Oregon)
Built 1936. Replaced 1995Lost Warren pony truss swing span bridge over Catching Slough on Coos River RoadReplaced by a new bridge
CBR - Coos Bay Bridge (Coos County, Oregon)
Built 1914Swing through truss bridge over Coos Bay on the Coos Bay Rail Link (CBR) in North BendOpen to traffic
CBR - Siuslaw River Bridge No. 7 (Lane County, Oregon)
Built 1914, 2007 CORP Coos Bay Line Closed, Re-opened 2011Swing span bridge over Siuslaw River on the Coos Bay Rail Link (CBR) in CushmanOpen to traffic
CBR - Umpqua River Bridge (Douglas County, Oregon)
Built 1914, 2007 CORP Coos Bay Line Closed, Re-opened 2011Pratt through truss bridge with Warren swing span over Umpqua River Bridge on the Coos Bay Rail Link (CBR) in ReedsportOpen to traffic
CCT - Rough and Ready Island Bridge (San Joaquin County, California)
Subdivided Warren through truss bridge over San Joaquin River on Central California Traction Co.Open to traffic
CN - Four Track Swing Bridge (Ashtabula County, Ohio)
Built 1910Through truss bridge over Conneaut Creek on Canadian National Railroad w highway single laneOpen
CNW - Kasota Drawbridge (Nicollet County, Minnesota)
Built 1880 and 1909Lost Lattice deck truss bridge over Minnesota River on Chicago & Northwestern RailwayRemoved but not replaced
Colusa Bridge (Colusa County, California)
Built in 1901; rehabilitated in 1947-8, replaced 1980Pratt through truss swing bridge over Sacramento River on Bridge StreetBridge replaced 1980
Coquille River Bridge (Coos County, Oregon)
Built 1922, Bypassed 1986, Demolished in 1993Lost swing span bridge over Coquille River on OR-42S (Fromerly US 101) in CoquilleRemoved and salvaged in 1993
Daggett Road Bridge (San Joaquin County, California)
Built 1902Abandoned Pratt through truss swing bridge over San Joaquin River (Burns Cutoff) on Dagget Road (Port Stockton Expressway)Abandoned
Ebey Slough Bridge (Snohomish County, Washington)
Built 1927; replaced with fixed UCEB (ugly concrete eyesore bridge) in 2012Lost swing bridge over Ebey Slough on WA 529Replaced by a new bridge
Eight Mile Road Bridge (San Joaquin County, California)
Built 1989Swing bridge over Bishop Cut on Eight Mile RoadOpen to traffic
Eight Mile Road Bridge II (San Joaquin County, California)
Built 1936; rehabilitated 1975Swing bridge over White Slough (Honker Canal) on Eight Mile RoadOpen to traffic
Gardiner-Randolph Bridge (1853) (Kennebec County, Maine)
Built 1850 or 1853 by Stephen Young as four Howe truss spans and one pivot span; two Howe trusses washed out March 2, 1896 and replaced by steel; draw span replaced soon after; last two covered spans replaced 1926Lost Howe swing pony truss and Howe through truss bridge over Kennebec River on ME-27Destroyed by flooding
Gaysport Bridge (1889) (Muskingum County, Ohio)
Built 1889 by Smith Bridge Co.; destroyed in 1913 floodLost Pratt through truss bridge over Muskingum River on County Road 66Destroyed by flooding
Gaysport Bridge (1914) (Muskingum County, Ohio)
Built 1914 after previous bridge destroyed in 1913 flood; replaced 1971Lost Pratt through truss bridge over Muskingum River on CR 66Replaced by new bridge using existing piers
Gianella Bridge (Butte County, California)
Built 1908-1911; Replaced 1987Lost swing bridge over Sacramento River on CA 32Replaced by new bridge
GN - Snohomish River Bridge (Snohomish County, Washington)
Built 1893; Replaced 1910Bridge over Snohomish River on Great Northern RailwayReplaced by a new bridge
Harrison Street Bridge (Alameda County, California)
Built in 1898; Removed 1924Lost Pratt through truss bridge over Oakland Estuary on Harrison Street & Southern Pacific RailroadRemoved
Heron Street Bridge (Grays Harbor County, Washington)
Built 1949Swing bridge over Wishkah River on US 12 in AberdeenOpen to traffic
High Street Bridge (1901) (Alameda County, California)
Built 1901; Replaced in 1939Lost Pratt through truss bridge over Oakland Harbor on High StreetReplaced by a new bridge
Hoquiam River Bridge (Old) (Grays Harbor County, Washington)
Replaced 1928Lost Lattice through truss bridge over Hoquiam riverReplaced by a new bridge
IER - Oakland Estuary Bridge (Alameda County, California)
Coverted from railroad-only to road vehicle usage in 1951. Replaced by a new bridge in 1974.Lost Through truss bridge over Oakland Estuary on Interurban Electric RailwayReplaced by a new bridge
KCS - Dorcheat Bayou Bridge (Webster Parish, Louisiana)
Built 1884Deck plate girder bridge over Loggy Bayou (Dorcheat Bayou) on Illinois Central RROpen to traffic
Knights Landing Bridge (1902) (Yolo County, California)
Built 1902; Road section removed ca. 1933; Removed ?Lost Pratt through truss bridge over Sacramento River on Road & Southern Pacific RailroadReplaced by a new bridge
Lewis & Clark River Bridge (Clatsop County, Oregon)
Built circa 1910; Replaced 1924Lost Through truss swing-span bridge over Lewis and Clark River on US 101Replaced by a new bridge
Lincoln Street Bridge (San Joaquin County, California)
Built in 1894; Removed in 1964Lost Through truss bridge over Mormon Slough on Lincoln StreetNo longer exists
M Street Bridge (1911) (Sacramento County, California)
Built 1911, Replaced 1934Lost through truss swing bridge over Sacramento River on M StreetReplaced by a new bridge
Meridian Bridge (1914) (Sutter County, California)
Built 1914; Replaced 1977Lost Pratt through truss bridge over Sacramento River on CA 20 & Sacramento Northern RailwayReplaced by a new bridge
Mokelumne River Bridge (San Joaquin County, California)
Built 1942; rehabilitated 1978Swing bridge over Mokelumne River on CA 12Open to traffic
Navy Drive Bridge (San Joaquin County, California)
Built 1941, replaced 2017Swing bridge over San Joaquin River on Navy Drive in StocktonReplaced by a new bridge
NP - South Fork Willapa River Bridge (Pacific County, Washington)
Built 1912Through truss bridge over South Fork Willapa River on former Northern Pacific Railroad in RaymondDerelict/abandoned
NWP - Black Point Bridge (1911) (Sonoma County, California)
Built 1911Warren through truss bridge over Petaluma River on Northwestern Pacific RailroadOpen to low emission locomotives and cars carrying animal feed and lumber up north four to five times a week.
Old River Bridge (San Joaquin County, California)
Built 1915; rehabilitated 1978Swing bridge over Old River on CA 4 in Discovery BayOpen to traffic
OWR&N - Chehalis River Bridge (Grays Harbor County, Washington)
Built 1911Pratt through truss bridge over Chehalis River on Oregon-Washington Railroad & Navigation Co.Removed
Park Street Bridge (1891) (Alameda County, California)
Built 1891; replaced 1934Lost Through truss bridge over Oakland Harbor on Park StreetReplaced by a new bridge
PNWR - Blind Slough Bridge (Clatsop County, Oregon)
Built 1895Warren through truss bridge over Blind Slough on Portland and Western RailroadClosed
PNWR - Clatskanie River Bridge (Columbia County, Oregon)
Built 1897Warren through truss swing bridge over Clatskanie River on Portland & Western Railroad (PNWR) in ClatskanieOpen to traffic
PNWR - Willamette River Bridge (Linn County, Oregon)
Built 1921 by the Southern Pacific RailroadSwing span through truss bridge over Willamette River on Portland and Western Railroad (PNWR) in AlbanyOpen to traffic
Princeton Swing Bridge (Green Lake County, Wisconsin)
Main span built in 1901; Approach built in 1908 by the American Bridge Co.Riveted Warren pony truss bridge over Fox River on Recreational trail on former railroad bedOpen to traffic
PSAP - Hoquiam River Swing Bridge (Grays Harbor County, Washington)
Built 1908Baltimore through truss bridge over Hoquiam River on Puget Sound and Pacific RailroadOpen to traffic
PSAP - Wishkah River Bridge (Grays Harbor County, Washington)
Built 1909Swing bridge over Wishkah River on Puget Sound and Pacific RailroadOpen to traffic
PSE - Duwamish River Bridge (King County, Washington)
Lost Howe through truss bridge over Duwamish River on Puget Sound Electric RailwayRemoved
Riverdale Bridge (Pacific County, Washington)
Built 1924Lost Through truss bridge over Willapa River on Route 101 RiverdaleNo longer exists
Riverton Drawbridge (King County, Washington)
Built 1903 of Douglas Fir & Cedar; Closed 1919; Removed 1927Lost Double-intersection Warren through truss swing bridge over Duwamish River on Old Military RoadRemoved but not replaced
Sacramento River Bridge (Glenn County, California)
Built 1948; rehabilitated 1961Howe Through truss bridge over Sacramento River on CA 162/Biggs-Willows RoadOpen to traffic
Sacramento-Yolo Bridge (Sacramento County, California)
Built 1858 Destroyed by flood or fire 1869Lost Deck truss swing bridge over Sacramento River on Broad streetDestroyed by disaster
San Joaquin River Bridge (San Joaquin County, California)
Built 1933Howe Through truss bridge over San Joaquin River on CA 4 in StocktonOpen to traffic
SP - Dumbarton Bridge (Alameda County, California)
Built 1910, last used for freight 1982; acquired by San Mateo County Transit District 1994Abandoned baltimore through truss bridge over San Francisco Bay on CaltrainAbandoned
SP - Newark Slough Drawbridge (Alameda County, California)
Built 1910Baltimore through truss bridge over Newark Slough on Caltrain; this is the east end of SP Dumbarton BridgeClosed to all traffic
SP - Willamette River Bridge (Old) (Linn County, Oregon)
Built 1887; Replaced 1921Lost Howe pony truss bridge over Willamette River on Southern Pacific RRReplaced by a new bridge
Third Spokane Street Drawbridge (King County, Washington)
Built 1917; Replaced by a new road bridge 1924, streetcar line closed 1928.Lost Pratt through truss bridge over Duwamish River on Spokane Street & StreetcarsReplaced by a new bridge
Umpqua River Bridge (Douglas County, Oregon)
Built 1936Swing bridge over Umpqua River on US 101 in ReedsportOpen to traffic
UP - 15th Street Bridge (Pierce County, Washington)
Built 1914; Removed 1983Lost Through truss bridge over Foss Waterway on 15th Street and Union Pacific RailroadRemoved but not replaced
UP - Mossdale Bridge East (San Joaquin County, California)
Built 1928Warren through truss swing bridge over San Joaquin River on Union Pacific RROpen to traffic
UP - Sacramento River Bridge (Tehama County, California)
Built 1898, 1901 Approach Rehabilitation, 1929 Approach truss replacmentsPratt through truss bridge over Sacramento River on Union Pacific RailroadOpen to traffic
UP - Willamette River Bridge (Linn County, Oregon)
Built 1906, Replaced 2013-14Swing span bridge over Willamette River on Union Pacific RailroadReplaced by a new bridge
Van Buren Bridge (Benton County, Oregon)
Built 1913Swing span bridge over Willamette River on OR-34 EastboundOpen to traffic
Walnut Grove Road Bridge (San Joaquin County, California)
Built 1955Swing through truss bridge over Mokelumne River on Walnut Grove Road in Walnut GroveOpen to traffic
Webster Street Drawbridge (1871) (Alameda County, California)
Built 1871; Replaced 1898Lost Through truss bridge over Oakland Harbor on Webster StreetReplaced by a new bridge
Webster Street Drawbridge (1898) (Alameda County, California)
Built 1898; Removed 1926Pratt through truss bridge over Oakland Harbor on Webster StreetReplaced by a new bridge
West Bridge (Grays Harbor County, Washington)
Replaced 1925Lost Through truss bridge over Chehalis River on Route 101No longer exists