There are 9,302 bridges in this category · Only showing 7,314 bridges with photos
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Pratt truss
The Pratt truss is named after Thomas and Caleb Pratt, Boston railroad engineers who patented the design in 1844. The Pratt and its variations are the most common design of metal truss bridges.
On a basic Pratt truss, the diagonals slope toward the center of the bridge, do not cross any verticals, and are approximately parallel. The top chord is straight and parallels the lower chord. The panels can have sub-divisions - or verticals and diagonals that don't reach from the top to bottom chord, though this can be considered a variation of the basic type.
There are many variations, or sub-types of the Pratt truss, some of which have their own name including
Parker,
camelback,
Pennsylvania,
Baltimore, and others.
It is used in bridges as a through truss, pony truss, and deck truss.
Sims Place Bridge (Ralls County, Missouri)
Pony truss bridge over Mills Creek on Sims PlaceOpen to traffic on a private drive
Singer Bridge (Miller County, Missouri)
Built 1913 by the Missouri Bridge & Iron Co.Through truss bridge over Tavern Creek on Singer Bridge Road (CR 52-60) just off MO 52 near St. ElizabethOpen to one-lane traffic on a gravel road
Singer Ditch Bridge CR 800S (Knox County, Indiana)
Built c. 1905; Replaced 1990Lost Pratt pony truss bridge over Singer Ditch on CR 800SReplaced by a new bridge
Singing Bridge (Middlesex County, Connecticut)
Built 1925 by the American Bridge Co.; rehabilitated 2004Through truss bridge over Patchaug River on US 1 in WestbrookOpen to traffic
Singleton Ditch-Monon Road Bridge (Lake County, Indiana)
Built ca. 1900Lost Half-hip Pratt pony truss bridge over Singleton Ditch on Monon RoadReplaced by a new bridge
Sioux City Elevated Railway (Woodbury County, Iowa)
Built 1891, Service ended 1899; Removed 1900Lost Pratt through truss & steel stringer viaduct over City Streets on Sioux City Elevated RailwayRemoved
Sipe Ditch Bridge (Jay County, Indiana)
Built ca. 1900Lost Bedstead Pratt pony truss bridge over Sipe Ditch on County Road 300 WestReplaced by a new bridge
Six Mile Creek Bridge (Rush County, Indiana)
Built ca.1900; replaced in 1991Lost Pratt through truss bridge over Six Mile Creek on CR 1100NReplaced by new bridge
Six Mile Creek Bridge (Rush County, Indiana)
Built in 1894 by the Toledo Bridge Company; replaced in 1989Lost Pratt through truss bridge over Six Mile Creek on CR 800NReplaced by new bridge
Six Mile Creek Bridge CR 51 W (Clay County, Indiana)
Built c. 1900Bedstead Pratt pony truss bridge over Branch Six Mile CreekRemoved but not replaced
Six Mile Creek Road Bridge (Shiawassee County, Michigan)
Built in 1886 by the Morse Bridge Company, closed to traffic ca. April 1998Through truss bridge over Shiawassee River on Six Mile Creek Road at New HavenClosed to all traffic
Six Mile Creek-CR 325N Bridge (Hancock County, Indiana)
Built ca. 1900Lost Pratt pony truss bridge over Sixmile Creek on County Road 325 EastReplaced by a new bridge
Six Span Bridge (Elkhart County, Indiana)
Replaced in 1968 and again in 2011Lost Pratt through truss bridge over St. Joseph River on Six Span Road/County Road 17Replaced by a new bridge
Sixes Bridge Road Bridge (Frederick County, Maryland)
Built 1910; rehabilitated 1995Two-span through truss bridge over Monocacy River on Sixes Bridge RoadOpen to traffic
Sixth Avenue West Viaduct (St. Louis County, Minnesota)
Built ?; Replaced 1967Lost Pratt through truss bridge over Duluth Union Depot on 6th Avenue WestReplaced by a new bridge
Sixth Street Bridge (Greene County, Arkansas)
Built 1934; rehabilitated 1995; removed sometime after 1997Lost pony truss bridge over Eight Mile Creek on North Sixth Street in ParagouldNo longer exists
Sixth Street Bridge (Kent County, Michigan)
Built 1886 by the Massillon Bridge Co.; rehabilitated 1978Through truss bridge over Grand River on Sixth Street in Grand RapidsOpen to traffic
Sixth Street Bridge (San Francisco County, California)
Built in 1891, Removed in 1965Lost Pratt through truss bridge over Mission Creek (China Basin) on Sixth StreetNo longer exists
Sixth Street Viaduct (Des Moines County, Iowa)
Built 1886; Enhanced 1903; Replaced 1993Lost Pratt through truss bridge over Over BNSF Railroad & Valley Street on 6th Street in BurlingtonReplaced by new bridge
SJSB&S/NYC Overpass (St. Joseph County, Indiana)
Removed 1943Lost Pratt through truss bridge over New York Central Railroad on St. Joseph, South Bend & Southern RailroadRemoved
Skaggs Bridge (Pulaski County, Missouri)
Replaced by the Pikes Peak Bridge in 1932Lost multi-span through truss bridge over Gasconade River between Crocker and WaynesvilleReplaced by new bridge
Skalall Creek Bridge (Tulsa County, Oklahoma)
Built ca. 1910Pony truss bridge over Skalall Creek on 176th St. N. (E0420) in SkiatookReplaced by a new bridge
Skeleton Creek Bridge (Logan County, Oklahoma)
Built 1925Through truss bridge over Skeleton Creek on MacArthur Blvd. (4236C)Open to traffic
Sketo Bridge (McLean County, Kentucky)
Lost pony truss bridge over Cypress Creek on KY 85Collapsed. Replaced by new bridge.
Ski Bowl Road Bridge (Greene County, New York)
Built 1935; rehabilitated 1962Through truss bridge over Schoharie Creek on Ski Bowl Road in HunterOpen to pedestrians only
Skillet Fork Bridge (Marion County, Illinois)
Built 1915Through truss bridge over Skillet Fork on CH 30 (Kell Road)Open to traffic
SKOL - Arkansas River Bridge (Oxford) (Sumner County, Kansas)
Built 1902, Destroyed by flooding ca. 2009Pratt through truss bridge over Arkansas River on former SKOL Railroad, ex-ATSFDestroyed by flooding
SKOL - Big Hill Creek Bridge (Montgomery County, Kansas)
Built 1899, Relocated Here 1925Pratt through truss bridge over Big Hill Creek on South Kansas and Oklahoma Railroad.Open to railroad traffic
SKOL - Fall River Bridge (Wilson County, Kansas)
Built 1905 for the St. Louis-San Francisco RailwayPratt Through truss bridge over Fall River on Abandoned South Kansas & Oklahoma Railroad
SKOL - Walnut River Bridge (Cowley County, Kansas)
Built 1903, Approach Rebuilt 1925Pratt through truss bridge over Walnut River on South Kansas & Oklahoma RailroadOpen to traffic
Skookumchuck River Bridge (Lewis County, Washington)
Built 1928Through truss bridge over Skookumchuck River on WA 507 in CentraliaOpen to traffic
Skull Creek Bridge (Payne County, Oklahoma)
Built 1922; replaced 2011Lost pony truss bridge over Skull Creek on N3520 Norfolk in CushingReplaced by a new bridge
Skunk Hollow Road Bridge (Logan County, Illinois)
Built 1904Through truss bridge over Kickapoo Creek on Skunk Hollow RoadIntact but closed to all traffic
Skunk River Bridge (Des Moines County, Iowa)
Built 1888; Removed ?Lost Pratt through truss bridge over Skunk River on RoadReplaced by a new bridge
Slabtown Bridge (Texas County, Missouri)
Lost Pratt through truss bridge over Big Piney River on Slab Spring DriveRemoved but not replaced
Slash Creek Bridge (Shelby County, Indiana)
Built ca.1900Pony truss bridge over Slash Creek on vacated section of CR 900S (Walnut St.)In use on private lane
Slate Creek Bridge (Idaho County, Idaho)
Built 1932Pony truss bridge over Slate Creek on CR 95Open to traffic
Slates Mill Bridge (Lackawanna County, Pennsylvania)
Built 1885 by the King Iron Bridge Co.Through truss bridge over South Branch Tunkhannock Creek on TR 439 at Lackawanna State ParkRemoved but not replaced
Slay Bridge (Clarke County, Mississippi)
Bypassed by a new bridge in 1975Abandoned pratt pony truss bridge over Bucatunna Creek on former CR 670 (Linton Rd)Abandoned
Slayden Bridge (Gonzales County, Texas)
Built 1907Through truss bridge over San Marcos River on CR 232Open to traffic
Slocum Ditch Bridge (La Porte County, Indiana)
Pratt pony truss bridge over Slocum Ditch on a pedestrian walkwayOpen to pedestrians only
Slough Creek Bridge (Dyer County, Tennessee)
Built 1950Lost pony truss bridge over Slough Creek on Jackson RoadReplaced by a new bridge
Slough Creek CR 480W Bridge (Jasper County, Indiana)
Built ca. 1910Lost Pratt pony truss bridge over Slough Creek on County Road 480 WestReplaced by a new bridge
SLR - Royal River Bridge (Cumberland County, Maine)
Through truss bridge over Royal River on Railroad (SLR)Open to traffic
Smalling Bridge (Carter County, Tennessee)
Built 1941Pratt through truss bridge over Watauga River on Smalling RoadOpen to traffic, one-lane bridge
Smart Ditch Bridge (Jackson County, Indiana)
Built 1908; replaced 1992Lost pony truss bridge over Smart Ditch on IN 39Replaced by new bridge
Smart Ditch CR 700E Bridge (Jackson County, Indiana)
Built ca. 1900Lost Pratt pony truss bridge over Smart Ditch on County Road 700 EastReplaced by a new bridge
Smart Ditch SR 39 Bridge (Jackson County, Indiana)
Built ca. 1900Lost Pratt pony truss bridge over Smart Ditch on State Road 39Replaced by a new bridge
Smiley Bayou Bridge (Yell County, Arkansas)
Built 1924 by the International Steel & Iron Co.Abandoned through truss bridge over Smiley Bayou on CR 54Abandoned
Smith Bridge (Union County, Georgia)
Bridge was replaced in 1985. Road was paved by TVA during this time.Lost Pratt through truss bridge over Nottely River on John Smith RoadReplaced by new bridge
Smith Chapel Road Bridge (Walker County, Alabama)
Built 1915, closed June 2013, replaced in summer of 2014Lost pony truss bridge over Mill Creek on Smith Chapel Road in Carbon HillReplaced by a new bridge
Smith Creek Road Bridge (Moniteau County, Missouri)
Built ca. 1930Pony truss bridge over Smith Creek on Smith Creek Road southwest of CaliforniaReplaced by a new bridge
Smith Crossing Bridge (Midland County, Michigan)
Built 1907Pratt through truss bridge over Tittabawassee River on Smith Crossing RoadClosed to all traffic
Smith Road Bridge (Bradford County, Pennsylvania)
Built ca. 1910; rehabilitated 1962Pratt through truss bridge over Towanda Creek on TR 358Open to traffic
Smith Road Bridge (Crawford County, Pennsylvania)
Built ca. 1888 by Wrought Iron Bridge Co.; replaced 2012Lost pony truss bridge over a branch of Conneaut Creek on TR 406 (Smith Road)Replaced by a new bridge
Smith Street Bridge (Providence County, Rhode Island)
Built 1872; Replaced ca. 1981Lost Pratt through truss bridge over Northeast Corridor (Amtrak) on Smith Street (US 44)Replaced by new bridge
Smith's Bridge (Will County, Illinois)
Buiilt 1911; Replaced 1932Lost Pratt through truss bridge over Des Plaines River on RoadReplaced by a new bridge
Smithfield Avenue Bridge (Providence County, Rhode Island)
Replaced ca. 1984Lost Pratt through truss bridge over Northeast Corridor (Amtrak) on Smithfield Avenue (RI 126)Replaced by new bridge
Smithland Bridge (Woodbury County, Iowa)
Lost Pratt through truss bridge over Little Sioux River on RoadReplaced by a new bridge
Smithton Bridge (Westmoreland County, Pennsylvania)
Built 1900 by the Pittsburgh Bridge Co.; rehabilitated 1935 and 1964; replaced 1986Lost cantilevered through truss bridge over Youghigheny River on PA 981 in SmithtonReplaced by new bridge
Smithville Bridge (1st) (Bastrop County, Texas)
(Main design: Pennsylvania through truss)Lost Pennsylvania through truss bridge over Colorado RiverDestroyed by flooding
Smokey Road Overpass (Fulton County, Illinois)
Built 1917Pony truss bridge over the BNSF Railroad on E Smokey RdOpen to traffic
Smoky Hill River Bridge (Dickinson County, Kansas)
Built 1915Through truss bridge over Smoky Hill River on Oat Road, 2.5 mi. east and 0.8 mi. south of DetroitDemolished
Smoky Row Road-Greens Fork River Bridge (Wayne County, Indiana)
Built ca. 1890 by the Massillon Bridge Company; replaced in 1975.Lost Pratt through truss bridge over Greens Fork River on Smoky Row RoadReplaced by a new bridge
Smothers Creek Bridge (Lavaca County, Texas)
Built 1930Through truss bridge over Smothers Creek on CR 183Replaced by a new bridge
Smothers Creek CR 250E (Daviess County, Indiana)
Built ca. 1900; Removed but not replacedLost Pratt through truss bridge over Smothers Creek on CR 250 ERemoved but not replaced
Smyth Road Bridge (Oconto County, Wisconsin)
Built 1928Through truss bridge over North Branch Oconto River on Smyth RoadOpen to traffic
SN - Feather River Bridge (Butte County, California)
Lost Pratt through truss bridge over Feather River on Sacramento Northern RailwayRemoved
Snake Creek Bridge (Tulsa County, Oklahoma)
Built 1909 by the Canton Bridge CompanyPratt through truss bridge over Snake Creek on 201st St. S.Intact but closed to all traffic
Snake Creek Bridge (Blaine County, Montana)
Built 1911Pony truss bridge over Snake Creek on CR 323Open to traffic
Snake River Bridge (Teton County, Wyoming)
Built 1910; rehabilitated 1960; damaged by truck in 2015Pratt through truss bridge over Snake River on CR 22-11 in HobackOpen to traffic
Snake River Bridge (Nome Census Area, Alaska)
ReplacedLost Pratt through truss bridge over Snake River on Bob Blodgett HighwayReplaced by a new bridge
SNETT - Triad Bridge (Worcester County, Massachusetts)
Converted to trail use 2015-6Abandoned Pratt deck truss girder bridge over Blackstone River, P&W Providence Main on Southern New England Trunkline Trail in MillvilleOpen to pedestrians and bicycles
Snider Bridge (Adams County, Iowa)
Built 1885 by Reeve, Ward and Keepers of Clinton, IowaPony truss bridge over Kemp Creek on 220th Street, west of CorningOpen to traffic
Snipe Creek Bridge (Marshall County, Kansas)
Built ca. 1910Pony truss bridge over Snipe Creek, 1.0 mi. south and 2.1 mi. east of WinifredDerelict/abandoned
Snoqualmie Valley Trail - Reinig Bridge (King County, Washington)
Built 1916; Abandoned 1980; Converted to pedestrian usePratt through truss bridge over Snoqualmie River on pedestrian walkwayOpen to pedestrians
Snow Hill Bridge (Miami County, Indiana)
Built ca. 1880; replaced 1990Lost Pratt through truss bridge over Big Pipe Creek on County Road 700 EastReplaced by a new bridge on a different alignment and then demolished.
Snyder Bridge (Polk County, Iowa)
Built 1898, Removed ca. 1975Lost Through truss bridge over Des Moines River on 128th StreetNo longer exists
Snyder Hollow Bridge (Ulster County, New York)
(Main design: Double-intersection Warren through truss)Built 1883; Replaced 1998Lost Double-intersection Warren through truss bridge over Esopus Creek on Woodland Valley RoadReplaced by new bridge
Sock Road Bridge (Dodge County, Wisconsin)
Built 1893; Demolished 1980Lost Pratt through truss bridge over Beaver Dam River on Sock Road in Town of LowellDemolished 1980, replaced by new bridge
Soda Creek Road Bridge (Shasta County, California)
Built 1930Pratt pony truss bridge over Soda Creek on Soda Creek RoadOpen to traffic
Soeth Road Bridge (Glenn County, California)
Built 1900Pratt Through truss bridge over Stony Creek on Soeth RoadOpen to traffic
Soldier River Bridge (Crawford County, Iowa)
Built 1957Through truss bridge over Soldier River on 110th StreetOpen to traffic
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