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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.


Bank Street Bridge (Hamilton County, Iowa)
Built 1891; Replaced 1954
Lost Pratt through truss bridge over Boone river on Bank Street
Replaced by new bridge

Bankhead Nation Forest Sipsey River Trailhead Bridge (Lawrence County, Alabama)
Built 1934
Pony truss bridge over Thompson Creek on road between Bankhead parking lots
Open to traffic

BAP - Silver Bow Creek Bridge (Silver Bow County, Montana)
Built 1897
Pony truss bidge over Silver Bow Creek & Montana Western Railway Company on Butte, Anaconda & Pacific Railway
Open to traffic

Baptist Church Road Bridge (Hunterdon County, New Jersey)
Built 1902
Pony truss bridge over Mulhockaway Creek on Baptist Church Road
Open to traffic

Bar Hollow Bridge (Saline County, Missouri)
Built 1929 by the Kansas City Bridge Co.; replaced 2004
Lost through truss bridge over Blackwater River on CR 231
Replaced by a new bridge

Barber Bridge (Golden Valley County, Montana)
Built 1911 by the Security Bridge Co.; replaced 1983
Lost through truss bridge over Musselshell River on CR 201
Replaced by new bridge

Bardees Bar Road Bridge (Butte County, California)
Abandoned Pratt deck truss bridge over North Fork Feather River on Bardees Bar Road
Derelict/abandoned

Bardsdale Bridge (Ventura County, California)
Built 1928 to replace bridge swept away in St. Francis Dam disaster; replaced 1994
Lost Through truss bridge over Santa Clara River on CA 23
Replaced by new bridge

Barker Bridge (Williamson County, Texas)
Used to carry Hwy 95 until bypassed in mid-1960's.
Bridge over Brushy Creek on Old CR457
Long abandoned

Barker Creek NW 900 Bridge (Benton County, Missouri)
Built 1905 by the Kansas City Bridge Co.
Pony truss bridge over Barker Creek on CR NW 900 southeast of Windsor
Open to traffic

Barnard Steel Bridge (Putnam County, Indiana)
Built ca. 1915
Through truss bridge over Big Walnut Creek on County Line Road
Closed to all traffic

Barnart Road-Eel River Bridge (Wabash County, Indiana)
Built 1888; rehabilitated 1981; replaced 1992
Lost through truss bridge over Eel River on CR 400W
Replaced by new bridge

Barr Creek-St Wendel Cynthiana Rd. Bridge (Posey County, Indiana)
Built ca. 1915
Lost Pratt pony truss bridge over Barr Creek on St Wendel Cynthiana Road
Replaced by a new bridge

Bart Road Pit Conveyor Bridge (Brazos County, Texas)
Abandoned pratt truss conveyer bridge over Little Brazos River on road
Derelict/abandoned. 50 ft section of Western approach missing.

Bartel Farm Bridge (Marion County, Kansas)
Pratt through truss bridge currently sitting on dry land at the Bartel Farm just east of Hillsboro
Derelict/Abandoned

Bartlett Springs Road Bridge (Lake County, California)
Abandoned pratt through truss bridge over North Fork Cache Creek on Bartlett Springs Rd
abandoned in place, streambed has channeled new path

Bastrop Bayou Bridge (Brazoria County, Texas)
Built 1893
Pratt through truss swing bridge over Bastrop Bayou
Replaced by a new bridge

Batavia Clark Island Bridges (Kane County, Illinois)
Modern trail bridge to Clark Island
Pratt pony truss bridge over Fox River on bike trail in Batavia
Open to pedestrians

Bates County Ditch Bridge (Bates County, Missouri)
Built 1907-08 by the Kansas City Bridge Co.; replaced 1997
Lost through truss bridge over Bates County Drainage Ditch on 6575 Road
Replaced by new bridge

Bates County Ditch Bridge (Bates County, Missouri)
Built 1907-08 by the Kansas City Bridge Co.; replaced 1995
Lost through truss bridge over Marais Des Cygnes Cutoff on 1575 Road (CR 547)
Replaced by new bridge

Bates Road Bridge (Orleans County, New York)
Built 1914
Through truss bridge over Erie Canal on Bates Road in Medina
Open to traffic

Batten-Dugan Road Bridge (Washington County, New York)
Built 1916
Through truss bridge over Batten Kill on Batten-Dugan Road
Open to traffic

Battle Creek Bridge (Ottawa County, Kansas)
Built 1909
Bedstead pony truss bridge over Battle Creek on Golden Road
Closed to traffic

Battle Creek Bridge (Tehama County, California)
Built 1911, Bypassed 1984
Pratt through truss bridge over Battle Creek on Jellys Ferry Road
Open to pedestrians

Battle Creek Bridge (Blaine County, Montana)
Built 1915
Through truss bridge over Battle Creek on CR 019
Open to traffic

Bauer Road Bridge (Clinton County, Michigan)
Built 1880 by the Penn Bridge Works; dismantled and moved to Calhoun County where it was restored
Relocated through truss bridge originally over Looking Glass River on Bauer Road; , now relocated to Historic Bridge Park in Calhoun County and restored as a pedestrian bridge
Relocated and open to pedestrians

Baugh Ford Bridge (Lawrence County, Missouri)
Built 1894 by the Kansas City Bridge Co.; replaced 2010
Lost pony truss bridge over Spring River on CR 2130
Replaced by a new bridge

Baugo Creek-Goshen Road Bridge (St. Joseph County, Indiana)
Built in 1892 by the Wrought Iron Bridge Company; replaced in 1972
Lost Pratt through truss bridge over Baugo Creek on Goshen Road
Replaced by a new bridge on Washington Street and demolished.

Baum Hollow Creek Bridge (Dearborn County, Indiana)
Built 1905, replaced 2004
Lost pony truss bridge over Baum Hollow Creek on Laughery Creek Road
Replaced by a new bridge

Bay Creek Bridge (Pike County, Illinois)
Built 1900
Abandoned pony truss bridge over Bay Creek on TR 271
Derelict/abandoned

Bay Farm Island Bridge (Old) (Alameda County, California)
Built 1898; replaced 1953
Lost Polygonal Warren through truss bridge over San Leandro Bay on Bay Farm Island
Replaced by a new bridge

Bay Road Bridge (Pope County, Illinois)
Built or relocated here in 1977; replaced 2007
Lost pony truss bridge over Bay Creek on Bay Road (TR 137), 2.5 mi. west of Homberg
Replaced by a new bridge

Bayou Boeuf LA 1177 Bridge (Avoyelles Parish, Louisiana)
Built ca. 1920 as part of the Jefferson Highway
Pony truss bridge over Bayou Boeuf on LA 1177
In storage

Bayou Creek Bridge (Livingston County, Kentucky)
Abandoned pratt pony truss bridge over Bayou Creek
Abandoned

Bayou Manard Bridge (Muskogee County, Oklahoma)
This bridge is on a private road that extends a bit of distance beyond the bridge. It is mapped as a county road but confirmed by landowner to be a private road.
Pratt through truss bridge over Bayou Manard on D4390 near Ft. Gibson
Open to authorized vehicles only. Private driveway.

Bayou Pierre Bridge (Claiborne County, Mississippi)
(Main design: Camelback through truss)
Bypassed by new bridge in 1983
Abandoned through truss bridge over Bayou Pierre on former Carlisle Lane
Abandoned

Bayou Wauksha Bridge (St. Landry Parish, Louisiana)
Built ca. 1950; relocated here ca. 1985; overlaid with train car chassis ca. 2012
Pony truss bridge over Wauksha Bayou on Will Landry Road
Open to traffic

Bazaar Bridge (Chase County, Kansas)
Built ca. 1910, Lost 2014
Lost through truss bridge over South Fork Cottonwood River, 0.4 mi. south of Bazaar
Replaced by a new bridge

Beanblossom Creek Bridge (Brown County, Indiana)
Pratt pony truss bridge over Beanblossom Creek on a driveway
Open

Bear Bridge (Champaign County, Illinois)
Built Ca. 1895, replaced 1994
Lost Through truss bridge over Salt Fork Vermilion River on County Road 1200 N
Replaced by new bridge

Bear Creek Bridge (Cedar County, Missouri)
Built 1917 by the Canton Bridge Co.; rehabilitated 1988
Through truss bridge over Bear Creek on CR 1620
Open to one-lane traffic

Bear Creek Bridge (Richland County, Wisconsin)
Built 1886; Moved to this location on unknown date; Replaced 1990
Lost Pratt pony truss bridge over Bear Creek on St Killian Road in Town of Buena Vista
Replaced by new bridge, Status of Pratt pony truss is unknown

Bear Creek Bridge (Lincoln County, Oklahoma)
Built 1914
Bedstead pony truss bridge over Bear Creek on E0870
Replaced by a new bridge

Bear Creek Bridge (Wapello County, Iowa)
Built 1935
Pony truss bridge over Branch Des Moines River on a local road
Open to traffic

Bear Creek Bridge (Lincoln County, Oklahoma)
Built 1904
Lost through truss bridge over Bear Creek on E0880
Replaced by a new bridge

Bear Creek Bridge (Hamilton County, Texas)
Bypassed 2001
Abandoned through truss bridge over Bear Creek on CR 103
Abandoned

Bear Creek Bridge (Ohio County, Indiana)
Built 1916; replaced 1993
Lost through truss bridge over Bear Creek on Mexico Ridge Road
Replaced by new bridge

Bear Creek Bridge (Tishomingo County, Mississippi)
Built 1951; Bypassed by new bridge in 2000
Abandoned pratt through truss bridge over Bear Creek on Former CR 75
Abandoned

Bear Creek Bridge (Tishomingo County, Mississippi)
Built Unkown; Bypassed by new bridge in 1984
Abandoned pratt through truss bridge over Bear Creek on Former CR 86
Abandoned

Bear Creek Bridge (Fillmore County, Minnesota)
Built 1914
Through truss bridge over Bear Creek on Nature RD
Closed

Bear Creek Bridge (Fillmore County, Minnesota)
Built 1906
Pratt through truss bridge over Bear Creek on Nature RD
Open to pedestrians only

Bear Creek Bridge (Adams County, Illinois)
Built 1905
Pony truss bridge over Bear Creek on W Adams St, 0.5 mi. southwest of Loraine
Intact but closed to all traffic

Bear Creek Bridge (Buchanan County, Iowa)
Built 1909
Pony truss bridge over Bear Creek on 305th Street
Open to traffic

Bear Creek Bridge (Macoupin County, Illinois)
Pony truss bridge over Bear Creek on Lenox Rd, 5.0 mi. northwest of Carlinville
Open to traffic

Bear Creek Bridge (Wapello County, Iowa)
Pony truss bridge on Formerly 170 Ave
Looks like the west end is leaning into the bridge.

Bear Creek Bridge (Fayette County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Bear Creek on Big Bear Road (CR 25E)
Replaced by a new bridge

Bear Creek Bridge (Logan County, Oklahoma)
Built 1908 by Canton Bridge Co.
Through truss bridge over Bear Creek on N3270
Closed

Bear Creek CR 127 Bridge (Saline County, Missouri)
Built 1907 by the Kansas City Bridge Co.
Pony truss bridge over Bear Creek on CR 127
Open to traffic

Bear Creek CR 150E Bridge (Jay County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Bear Creek on County Road 150 East
Replaced by a new bridge

Bear Creek CR 328 Bridge (Clark County, Missouri)
Built ca. 1910
Pony truss bridge over Bear Creek on CR 328
Still in service near the end of a dead end road

Bear Creek CR 400W Bridge (Randolph County, Indiana)
Built ca. 1895
Lost Half-hip Pratt pony truss bridge over Bear Creek on County Road 400 West
Replaced by a new bridge

Bear Creek CR 450W Bridge (Randolph County, Indiana)
Built ca.1895
Pony truss bridge over Bear Creek on County Road 450 West
Closed to all traffic with deck missing

Bear Den Road Bridge (Chippewa County, Wisconsin)
Unknown Build date; Moved to Irvine Park 1940; Replaced 2004
Lost pratt truss bridge over Duncan Creek on Bear Den Road in Chippewa Falls
Demolished, Replaced by UCEB 2004

Bear River Bridge (Box Elder County, Utah)
Built 1954; rehabilitated 2014
Deck truss bridge over Bear River on a county road
Open to traffic

Bear River Bridge (Rich County, Utah)
Built 1914
Through truss bridge over Bear River on a county road
Open to traffic

Bear River Bridge (Box Elder County, Utah)
Abandoned through truss bridge over Bear River on 2350 N
Derelict/abandoned

Bear River Canal Malad Flume (Box Elder County, Utah)
Built early 1900s
Lost Deck truss bridge over Malad River on Bear River Canal
Lost

Bear River City Bridge (Box Elder County, Utah)
Built 1889, Bypassed 1999 but not removed.
Through truss bridge over Bear River on County Road in Bear River City
Intact and closed, Bypassed by new bridge

Bear Tavern Bridge (Mercer County, New Jersey)
Built 1882 by the King Bridge Co.; rehabilitated 1950; closed to traffic Sept. 2009
Through truss bridge over Jacobs Creek on Bear Tavern Road (CR 579)
New bridge open; Truss portal and sway bracing widened then placed as non-functional decoration over new Valley Road bridge

Bearden's Mill Bridge (Lincoln County, Tennessee)
(Main design: Parker through truss)
Abandoned parker through truss bridge over Elk River on an abandoned section of River Road about 50 yards east of the intersection of River Rd. and William Battle Blvd. in Fayetteville
Abandoned

Beasley Fork Road Bridge (Adams County, Ohio)
Built 1910; rehabilitated 1999
Double pony truss bridge over Beasley Fork on Beasley Fork Road (CR 48)
Open to traffic

Beatty Road Bridge (Morrow County, Ohio)
Built 1915; rehabilitated 1996
Through truss bridge over Whetstone Creek on CR 149 (Beatty Road)
Closed to traffic after failing an inspection in August 2011

Beaty Bridge (Hamilton County, Florida)
Built 1911; Condemned 1970
Abandoned Pratt pony truss bridge over Alapahoochee River on Abandoned Road
Abandoned

Beaucoup Road Bridge (Jackson County, Illinois)
Built 1904; replaced 1987
Lost through truss over Beaucoup Creek on Old Beaucoup Road (FAS 1916) west of Vergennes
Replaced by a concrete bridge on a new alignment

Beaver Creek Bridge (Lincoln County, Kansas)
Built ca. 1890
Bedstead pony truss bridge over Beaver Creek, 0.7 mi. south and 2.3 mi. east of Lincoln
Open to traffic

Beaver Creek Bridge (Barren County, Kentucky)
Bypassed 1956
Pratt pony truss bridge over Beaver Creek on Old US 68
Closed to all traffic

Beaver Creek Bridge (Butler County, Iowa)
Built ca. 1910; now closed
Through truss bridge over Beaver Creek on Elm Avenue
Intact but closed to all traffic

Beaver Creek Bridge (Wilbarger County, Texas)
Built ca. 1890; bypassed 2009
Abandoned through truss bridge over Beaver Creek on CR 324
Abandoned

Beaver Creek Bridge (Dallas County, Iowa)
Built ca. 1890; rehabilitated 1974; demolished 2013
Lost through truss bridge over Beaver Creek on V Avenue
Removed but not replaced

Beaver Creek Bridge (Steele County, North Dakota)
Built 1913
Pony truss bridge over Beaver Creek on 140th Avenue NE, 13 mi. east and 5 mi. north of Finley in Newburgh Township
Open to traffic

Beaver Creek Bridge (Shelby County, Tennessee)
Built 1931
Pony truss bridge over West Beaver Creek on NFA C010
Open to traffic

Beaver Creek Bridge (Martin County, Indiana)
Built ca. 1930; removed 1995
Lost pony truss bridge over Beaver Creek on CR 400 N
Replaced with a culvert

Beaver Creek Bridge (Phillips County, Montana)
Built 1911
Pony truss bridge over Beaver Creek on CR 206 in Saco
Open to traffic

Beaver Creek Bridge (Logan County, Oklahoma)
Built 1914
Through truss bridge over Beaver Creek on E0690 (CR 69)
Intact but closed to all traffic

Beaver Creek Bridge #137 (Martin County, Indiana)
Built ca. 1903; rehabilitated 1992
Replaced pony truss bridge over Beaver Creek on CR 170 North (CR243)
Replaced by a new bridge and moved to the side of the road.

Beaver Creek Bridge (Old) (Martin County, Indiana)
Built ca. 1885
Bridge over Beaver Creek on Weisbach Road
Replaced by a new bridge

Beaver Creek Bridge (Older) (Polk County, Iowa)
Replaced 1914
Pratt through truss bridge over Beaver Creek on Beaver Avenue
Replaced by a new bridge

Beaver Dam Creek Bridge (Westchester County, New York)
Built 1930; rehabilitated 1956
Pratt pony truss bridge over Beaver Dam Creek on Mathews Mill Road
Open to traffic

Beaver Dam Road Bridge (Washington County, Wisconsin)
Built 1896; Bridge extant 1996; Removed, date uknown;
Lost Bedstead pony truss bridge over Rock River on Beaver Dam Road in Town of Addison
Removed

Beaver Run Trestle (Carbon County, Pennsylvania)
Built 1905; Removed 1926
Lost Pratt deck truss bridge over Beaver Run on Carbon County Electric Railway
Removed

Beaverhead River Bridge (Beaverhead County, Montana)
Built 1908
Pratt through truss bridge over Beaverhead River on CR 559
Open to traffic

Beck's Creek Bridge (Shelby County, Illinois)
Built 1909
Bedstead pony truss bridge over Beck's Creek on TR 317, 5.6 mi. northwest of Herrick
Intact but closed to all traffic

Beck's Creek Bridge (Shelby County, Illinois)
Built 1899, rehabilitated 1991
Bedstead pony truss bridge over Beck's Creek on TR 373, 5.4 mi. southeast of Oconee
Closed to all traffic. No deck present.

Beck's Creek Bridge (Shelby County, Illinois)
Built 1909
Pony truss bridge over Beck's Creek on TR 32, 2.6 mi. northwest of Herrick
Derelict/abandoned

Beckel Bridge (Lehigh County, Pennsylvania)
built in 1867; relocated from Township Line Road in 1991
Pratt pony truss bridge over Monocacy Creek on Trail
Open to pedestrians only

Beckwoods Drive Bridge (St. Louis County, Missouri)
Built 1911 by Stupp Brothers Bridge & Iron Co.
Pony truss bridge over Antire Creek on Beckwoods Drive
Open to traffic on a private lane

Bedstead Bridge (Cedar County, Missouri)
Lost Bedstead Pratt pony truss bridge over ? on Hwy 32
Demolished

Bee Creek Bridge (Chautauqua County, Kansas)
Built ca. 1930; rehabilitated 1992
Pony truss bridge over Bee Creek on Minor Ee.0-10.1, 7.0 mi. north and 2.0 mi. east of Niotaze
Open to traffic

Bee Creek CR 857 Bridge (Monroe County, Missouri)
Built 1908
Pony truss bridge over Bee Creek on CR 857
Open to one-lane traffic

Beech Creek Bridge (Owen County, Indiana)
Built 1889
Pony truss bridge over Beech Creek on CR 550 South
Open to traffic