Pontoon
View Exhibit mapBridges that float on top of the water much like a boat but not held to the bottom of bodies of water.
Alligator River Bridge (Tyrrell County, North Carolina)
Built 1935Bridge over Alligator River on Route 94Replaced by a new bridge
Arkansas River Pontoon Bridge (Yell County, Arkansas)
At one time owned by the Dardanelle and Russellville Railroad, but no trains ever crossed it.Lost Pontoon bridge over Arkansas River in Dardanelle. Once hailed as the "Longest pontoon bridge over moving water". Carried Old Military Road, a major route between Little Rock and Fort Smith.Demolished
Austin Pontoon Bridge (Travis County, Texas)
First Bridge Across Colorado RiverLost Pontoon bridge over Colorado River on Congress AvenueDestroyed by flooding
Black Bayou Bridge (Calcasieu Parish, Louisiana)
Built 1979Pontoon Swing bridge over the Intracoastal Waterway on LA 384Open to traffic
Bonner Springs Bridge (1898) (Wyandotte County, Kansas)
Built 1898; Lost in the flood of 1903Lost Pratt through truss bridge over Kansas RiverDestroyed by flooding
Brookfield Floating Bridge (1936) (Orange County, Vermont)
Built 1936; reconstructed 1978; Replaced 2008Pontoon bridge over Sunset Lake on Route 65 in BrookfieldReplaced by a new bridge
Butte La Rose Pontoon Bridge (St. Martin Parish, Louisiana)
Built 1960Pontoon swing bridge over Bayou La Rose on Herman Dupuis RdOpen to traffic
Camp Sherman Pontoon Bridge (Ross County, Ohio)
Built ca. 1917; Replaced 1919Lost Pontoon bridge over Scioto River on WalkwayReplaced by a new bridge
Carmi Pontoon Bridge (White County, Illinois)
Built in 1915 for pedestrian usage after the partial collapse of the iron bridge, likely removed after the new bridge was finished.Lost Pontoon bridge over Little Wabash River on Pedestrian pathNo longer exists
Chamberlain Pontoon Bridge (Brule County, South Dakota)
(Main design: Bailey pony truss)Built & removed 1953Lost Bailey pony truss bridge over Missouri River on US16Removed
Civil War Pontoon Bridge (Kenton County, Kentucky)
Aided troop movement during the Civil War.Lost Pontoon bridge over Ohio River Removed but not replaced
Cote Blanche Bridge (Lafourche Parish, Louisiana)
Built 1956Bridge over Bayou Lafourche on W. 79th StreetOpen to traffic
Del Rio Pontoon Bridge (Val Verde County, Texas)
Built 1919Lost Pontoon bridge over Rio Grande on roadReplaced by a new bridge
Dulac Pontoon Bridge (Terrebonne Parish, Louisiana)
Built 1958Pontoon bridge over Houma Navigation Canal on Falgout Canal Rd in DulacOpen to traffic
Elk Springs Pontoon Bridge (McDonald County, Missouri)
Replaced 1935(?)Lost pontoon bridge over Elk River on Elk Springs RoadReplaced by new bridge
Estherwood Bridge (Acadia Parish, Louisiana)
Built 1975Pontoon bridge over Bayou Plaquemine Brule on LA 91 at EstherwoodOpen to traffic
Evergreen Point Floating Bridge (King County, Washington)
Built 1963, replaced by new six-lane floating bridge in 2016Pontoon bridge over Lake Washington on SR 520Replaced by a new bridge
Folsom Pontoon Bridge (Johnson County, Iowa)
Built 1854; Replaced with a permanent structure 1856Lost Pontoon bridge over Iowa River on National RoadReplaced by a new bridge
Galliano Pontoon Bridge (Lafourche Parish, Louisiana)
Built 1956; rehabilitated 2009Pontoon bridge over Bayou Lafourche at GallianoOpen to traffic
Hood Canal Bridge (Kitsap County, Washington)
Built 1961, Sank 1979, Reopened 1982, East half replaced 2009Pontoon bridge over Hood Canal on WA 104Open to traffic
Lacon Pontoon Bridge (Marshall County, Illinois)
Lost Floating bridge over Illinois River on Illinois Rt 17Replaced by a new bridge
Lake Bomoseen Float Bridge (Rutland County, Vermont)
Lost Pontoon bridge over Lake Bomoseen on Float Bridge RoadReplaced by a new bridge
Larose Pontoon Bridge (Lafourche Parish, Louisiana)
Built 1953; Removed 2013Lost Pontoon swing bridge over Bayou Lafourche on LA 310 in LaroseDemolished
Mathews Pontoon Bridge (Lafourche Parish, Louisiana)
Built 1963Lost pontoon bridge on LA 364 in MathewsBridge removed
MILW - Chamberlain Pontoon Bridge (Brule County, South Dakota)
Built 1905; Replaced 1923Lost Pontoon bridge over Missouri River on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Pile-Pontoon Bridge (1874) (Clayton County, Iowa)
Built 1874; Replaced 1913Lost Pontoon swing bridge over Mississippi River on Chicago, Milwaukee, St. Paul & Pacific RailroadReplaced by a new bridge
MILW - Pile-Pontoon Bridge (1913) (Clayton County, Iowa)
Built 1913; Disassembled 1961Lost Pontoon swing bridge over Mississippi River on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved
MILW - Pile-Pontoon Bridge (Prairie du Chien) (Crawford County, Wisconsin)
Built 1898 and upgraded several times; Removed 1961Lost Pontoon bridge over Mississippi River on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved but not replaced
MILW - Reads Landing Pontoon Bridge (Wabasha County, Minnesota)
Originally built 1882; Rebuilt 1890 and 1932 due to ice jams destroying portions of the bridge; Approaches destroyed by flooding and bridge removed 1951Lost Timber stringer bridge over Mississippi River on Chicago, Milwaukee, St. Paul & Pacific RailroadRemoved
Miner Slough Bridge (1847) (Solano County, California)
Built in 1947: remove and replaced 1966Lost Bridge over Miner Slough on CA 84No longer exists
Padre Island Causeway (Nueces County, Texas)
Built 1950; Replaced 1973Lost Pontoon swing bridge over Intracoastal Waterway on Padre Island CausewayReplaced by a new bridge
Peru Pontoon Bridge (LaSalle County, Illinois)
Built between 1855-1860 by Captain J.L. McCormick, private citizen as a toll bridgeLost Pontoon bridge over Illinois River on Fulton Street (originally White St)No longer exists
Pontoon Bridge (Morgan County, Alabama)
Built in 1864 for the Union ArmyLost Pontoon bridge over Tennessee RiverNo longer exists
RUT - Lake Champlain Drawbridge (Addison Branch) (Addison County, Vermont)
Built 1871; Pontoon span rebuilt 1888 & 1902; Closed 1920; Abandoned 1923; Removed 1929Lost Pontoon swing bridge over Lake Champlain on Rutland RailroadNo longer exists
SN - St. John Bridge (Butte County, California)
Built ca 1907; Lost ca 1917Lost Pontoon Howe pony truss bridge over Sacramento River on Northern Electric RailroadDestroyed by flooding
SR 520 Floating Bridge (King County, Washington)
Opened in 2016Floating bridge over Lake Washington on SR 520Open to traffic
Sunset Beach Bridge (Brunswick County, North Carolina)
Built 1961Pontoon Floating bridge over Intracoastal Waterway on NC 1172 in Sunset BeachReplaced by a new bridge
Valentine Bridge (Lafourche Parish, Louisiana)
Built 1969Swing bridge over Bayou Lafourche on Valentine BrgClosed to traffic indefinitely