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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.


Galena Street Bridge (Carroll County, Illinois)
Built ca.1890 by the Wrought Iron Bridge Co.
Through truss bridge over Carroll Creek on North Galena Street in Mount Carroll
Open to pedestrians only

Galesburg Bridge (Jasper County, Missouri)
Built 1886 by the Wrought Iron Bridge Co.; replaced 1991
Lost wrought iron through truss bridge over North Fork Spring River on CR 255
Replaced by new bridge

Galla Creek Bridge (Pope County, Arkansas)
Built 1920; made obsolete by a new US 64 alignment in 1936; replaced 1998
Lost through truss bridge over Galla Creek on Old US 64 at Pottsville
Replaced by a new bridge

Gallatin River Bridge (Gallatin County, Montana)
Half-hip Pratt pony truss bridge over Gallatin River on Access Road
Open to traffic

Gallimore Bridge (Greene County, Indiana)
Built c. 1900; Replaced 1987
Lost Pratt through truss bridge
Replaced by a new bridge

Galloway Bridge (Cherry County, Nebraska)
Formerly the Reimenschneider Bridge at 16F. Moved in 1965 to the McCann site. I believe this is what State calls the Galloway Bridge.
Bridge
Open to traffic

Galveston Bay Wagon Bridge (Galveston County, Texas)
Built 1893; Destroyed by the 1900 Hurricane
Pratt through truss swing bridge over Galveston Bay on Road
Destroyed by severe weather

Gamble Road Bridge (Moniteau County, Missouri)
Bedstead truss bridge over Mamey Fork on Gamble Road
Open to traffic

Gandy Creek Bridge (Randolph County, West Virginia)
Built 1900
Pratt through truss bridge over Gandy Creek on Farm Road
Open to traffic

Gans Creek Bridge (Boone County, Missouri)
Built ca. 1905 in Audrain County; later relocated here
Relocated bedstead pony truss bridge over Gans Creek just off MO 163 in Rock Bridge State Park
Retrofitted for pedestrian use only

GAP - Riverton Bridge (Allegheny County, Pennsylvania)
(Main design: Parker through truss)
Built in 1891; converted into bike trail use in 2008
Parker through truss bridge over Monongahela River on Pennsylvania Union Railroad (now Great Allegheny Passage)
Open to pedestrians

Garden City Main Street Bridge (Blue Earth County, Minnesota)
Abandoned truss bridge over Watonwan River on Abandoned section of Main Street
Derelict/abandoned

Garden City Old US 31 Bridge (Cullman County, Alabama)
(Main design: Parker through truss)
Bridge made obsolete by the new US 31 bridge in 1960
Parker through truss bridge over Mulberry Fork Black Warrior River on Old US 31 in Garden City
Bridge is technically abandoned, but it is soon going to be officially a part of a walking trail and park.

Garden Hill Road Bridge (Athens County, Ohio)
Iron truss bridge over Middle Branch Shade River on Garden Hill Road (TR 77)
Closed to all traffic

Gardener's Mill Road Bridge (Carroll County, Virginia)
Built 1932
Pratt Pony truss bridge over Little Reed Island Creek on Gardener's Mill Road in Hillsville
Replaced by a new bridge

Garick Bridge (Decatur County, Indiana)
Built 1933; replaced 2000
Lost through truss bridge over Sand Creek on County Road 1000 South
Replaced by new bridge

Garner Road Bridge (Ray County, Missouri)
Built ca. 1930
Pony truss bridge over West Fork Crooked River on Garner Road
Open to traffic

Garnet Street Bridge (San Bernardino County, California)
Built 1925
Pratt Pony truss bridge over Mill Creek on Garnet Street in Mentone
To be replaced. Demolition to commence in July 2016

Garrison Bridge (Powell County, Montana)
Built 1912; relocated ca. 2006
Relocated through truss bridge behind Montana State Prison Museum; formerly located over Clark Fork on Rock Creek Road in Garrison
In storage

Gastown Bridge (Armstrong County, Pennsylvania)
Built ca. 1908 by the Penn Bridge Co.
Pony truss bridge over Plum Creek on TR 690
Replaced by a new bridge

Gately Bridge (Mahaska County, Iowa)
Removed in the 1960s
Lost Pratt through truss bridge over Des Moines River on Eddyville RFD 02
Replaced by a new bridge

Gates Bridge (Floyd County, Iowa)
Lost Pratt through truss bridge over Shell Rock River on Road near Marble Rock
Replaced by a new bridge

Gates Mills Interurban Bridge (Cuyahoga County, Ohio)
Built in 1899, this Pratt through Truss carried the Cleveland & Eastern Railway over the Chagrin River from 1900 until abandonment of the line on March 31, 1925. Bridge has since been converted for use as a pedestrian walkway
Pratt through truss bridge over Chagrin River on Pedestrian bridge (former interurban railroad)
Open to pedestrians only

Gaumer Bridge (Vermilion County, Illinois)
Built 1886, damaged by flooding in 1994 and removed, replaced by new bridge in 2002
Lost through truss bridge over North Fork Vermilion River on TR 101, 0.5 mi. west of Alvin
Replaced by new bridge

Gayman Road Bridge near Danboro, PA (Bucks County, Pennsylvania)
Built 1887 by the Pittsburgh Bridge Co.
Pony truss bridge over North Branch Neshaminy Creek on Gayman Road near Danboro (Plumstead Twp) PA.
Intact but closed to all traffic

Gaysport Bridge (Blair County, Pennsylvania)
Built 1895
Through truss bridge over Beaver Dam Branch of Juniata River on PA 2014 in Hollidaysburg
Demolished and replaced.

GCSR - San Saba River Bridge (San Saba County, Texas)
Pratt through truss bridge over San Saba River on Gulf Colorado & San Saba Railway
Open to traffic

Gedney Lake Bridge (Muscatine County, Iowa)
Built 1930
Pratt through truss bridge over Gedney Lake on Former alignment of 231st Street
Open to Pedestrians

Genegantslet Creek Bridge (Older) (Chenango County, New York)
Built c. 1890 by Groton Bridge Co
Lost Pratt Through truss bridge over Creek on Rt 41
Replaced by a new bridge

Geneva Ford Bridge (Jennings County, Indiana)
Built 1907, rehabilitated and reopened in 2016
Pratt through truss bridge over Sand Creek on CR 250 West
Open to traffic

Gentry Bridge (Benton County, Arkansas)
Replaced 1956
Lost through truss bridge on AR 59, near Gentry
No longer exists

Georges Creek Bridge (Allegany County, Maryland)
Built ca 1900 by the Penn Bridge Co.
Pratt pony truss bridge over Georges Creek on (Morrison Road) Old Reynolds Rd
Closed to all traffic

Georges Creek KY 581 Bridge (Lawrence County, Kentucky)
Built 1924 by the Vincennes Bridge Co.; rehabilitated 1971
Pony truss bridge over Georges Creek on KY 581
Open to traffic

Georgetown Loop - Clear Creek Pony Truss (Clear Creek County, Colorado)
Pony truss bridge over Clear Creek on the Georgetown Loop Railroad
Open to tourist railroad

Georgtown Road Bridge (Jo Daviess County, Illinois)
Built ca. 1890
Three-span pony truss bridge over Apple River on West Georgtown Road, .3 mi. northwest of Elizabeth
Destroyed by flooding on July 23/24, 2010

Gerald Frey Farm Bridge (Wyandot County, Ohio)
Moved here from original location in 1979
Pratt pony truss bridge over Oak Run on a private lane
Open to traffic

Gerardot Road Bridge (Allen County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Hoffman Ditch on Gerardot Road
Replaced by a new bridge

Gerhart's Mill Bridge (Bucks County, Pennsylvania)
Built 1891; rehabilitated 1934
Through truss bridge over Unami Creek on Nursery Road
Open to traffic

Gerloff Road Bridge (Montgomery County, Pennsylvania)
Built 1888, closed to traffic in mid 1970's; Rebuilt by High Steel Structures & reopened July 1998
Pratt through truss bridge over Swamp Creek on Gerloff Road near Zieglersville, PA
Open to traffic

Geysers Road Bridge (Sonoma County, California)
Built 1909; rehabilitated 1970
Pratt Through truss bridge over Big Sulphur Creek on Geysers Road
Open to traffic

GFRR - Altamaha River Bridge (Jeff Davis County, Georgia)
(Main design: Warren through truss with all verticals)
Built 1909 by the American Bridge Co. abandoned replaced with fixed truss span
Lost warren through truss with all verticals bridge over Altamaha River on Georgia & Florida Railroad
Replaced by a new bridge

Gholson Bridge (Brunswick County, Virginia)
Built 1884
Pratt through truss bridge over Meherrin River on Iron Bridge Road (Route 715)
Open to traffic

Ghost Bridge (Lauderdale County, Alabama)
Built 1912; Closed 1996; Demolished 2013
Lost Pratt through truss bridge over Cypress Creek on CR 282 in Florence
Demolished

Gianella Bridge (Butte County, California)
(Main design: Pratt through truss)
Built 1908-1911; Replaced 1987
Lost swing bridge over Sacramento River on State Route 32
Replaced by new bridge

Gibbs Avenue Bridge (Lawrence County, Missouri)
Built 1911
Pony truss bridge over Clear Creek on Gibbs Avenue in Pierce City
Open to one-lane traffic with a 5 ton weight limit

Gibsonton Thru Truss (Westmoreland County, Pennsylvania)
Through truss bridge over Unnamed creek
Closed to all traffic

Giddings Road Covered Bridge 35-04-62 (Ashtabula County, Ohio)
Built 1995
Pratt through truss bridge over Mill Creek on Giddings Road
Open to traffic

Gilbert Bridge (York County, Pennsylvania)
Built 1899 by Wrought Iron Bridge Co.
Lost through truss bridge over Yellow Breeches Creek on TR 892 (Bishop Road)
replaced by a concrete span

Gilbert Street Bridge (Vermilion County, Illinois)
(Main design: Warren deck truss)
Built 1893 by the Chicago Bridge Co., replaced in 1921-22
Lost Deck truss bridge over Vermilion River on Gilbert Street in Danville
Replaced by new bridge

Gilbertville Bridge (Black Hawk County, Iowa)
Built 1892
Lost Pratt through truss bridge over Cedar River on Road
Replaced by a new bridge

Gilboa Bridge (Putnam County, Ohio)
Built 1886; rehabilitated 1972
Through truss bridge over Blanchard River on County Road 3 in Gilboa
Bypassed with a new bridge to the East and retained for pedestrian use.

Gilead Bridge (Lewis County, Missouri)
Built 1895 by the Wrought Iron Bridge Co.; replaced 2002
Lost through truss bridge over Middle Fabius Rive on CR 530
No longer exists

Gill Bridge (Ralls County, Missouri)
Built 1909 by Stupp Brothers Bridge & Iron Co.; replaced 1996
Lost through truss over Lick Creek on Lick Creek Lane (CR 181) just west of Perry
Replaced by a concrete bridge

Gillette Street Bridge (Windsor County, Vermont)
Built 1915; rehabilitated 2013
Pin connected Pratt pony truss bridge over New England Central Railroad on Gillette Ave (C3029)
Open to traffic

Gillis Bridge (Shelby County, Missouri)
Built 1908 by the Michelmann Steel Construction Co.
Bedstead pony truss bridge over Black Creek on CR 342
Open to traffic

Gilmanton Bridge (Buffalo County, Wisconsin)
Built 1926
Lost Pratt truss bridge over Elk Creek on WI 88
Replaced by a new bridge

Gilmore Bridge (Sandusky County, Ohio)
Built ca.1900; abandoned in 1977; demolished in November 2010.
Lost Pratt through truss bridge over Sandusky River on Darr Road (TR 148)
Removed but not replaced

Gilroy Hot Springs Road Bridge (Santa Clara County, California)
Built 1921; rehabilitated 1993
Through truss bridge over Coyote Creek on Gilroy Hot Spgs Road
Open to traffic

Gipple's Quarry Bridge (Louisa County, Iowa)
Built 1893
Pony truss bridge over Buffington Creek on V Avenue
Closed to all traffic

Gipsy Bridge (Bollinger County, Missouri)
Built 1911-12 at Greenbrier (?); relocated here in 1927
Lost through truss bridge over Castor River north of Gipsy on CR 736
Demolished in Summer 2002 and replaced with a boring concrete bridge

Girard Ave. Bridge (Replacement) (Philadelphia County, Pennsylvania)
Original builders Clarke, Reeves & Company, Engineers; third bridge now stands. Was once the widest bridge in the world when it opened in 1874.
Pratt through truss bridge over Schuylkill River on Route 13
Open to traffic

Gladbrook Bridge (Tama County, Iowa)
Lost Pratt through truss bridge over Wolf Creek on Road
Replaced by a new bridge

Gladden Creek Bridge (Dent County, Missouri)
Built 1934 (1924 per NBI)
Through truss bridge over Gladden Creek on MO 19 south of Salem
Open to traffic

Glasgow Road Bridge (Jefferson County, Alabama)
Built 1935
Pratt through truss bridge over abandoned Woodward Railroad on Glasgow Road
Open to traffic

Glatfelter Station Road (York County, Pennsylvania)
Bridge was moved in the early 1980's to preserve it
Pratt pony truss bridge over Codorous Creek on Unnamed Road
Open to private traffic and pedistrans

Glaze's Ford Bridge (Washington County, Tennessee)
(Main design: Pratt through truss)
Built in 1901 at Glaze's Ford, flood damage repaired and strengthened in 1912-1913, closed in 1983 and left intact on private property
Pratt through truss bridge over Nolichucky River
Closed to all traffic

Gleaves Road Bridge (Wythe County, Virginia)
Built unknown location ca. 1880s, Installed at this location in 1903 as a railroad bridge; abandoned by railroad in 1938, reopened as a highway bridge ca. 1948
Through truss bridge over Cripple Creek on Gleaves Road (Route 619)
Open to traffic

Glen Carbon Electric Line Trestle (Madison County, Illinois)
Lost Pratt through truss bridge over railroad tracks somewhere in Glen Carbon Illinois
Lost Pratt through truss bridge over railroad tracks on streetcar line in Glen Carbon
Removed

Glenallen Bridge (Bollinger County, Missouri)
Built in 1908; made obsolete in 1961 by a new concrete bridge on Route ZZ
Two-span pony truss bridge over Little Crooked Creek at Glenallen in Glen Allen
Open to traffic on a paved road with a 3 ton weight limit

Glendale Shoals Bridge (Spartanburg County, South Carolina)
Built ca. 1928; Bypassed 1976; Rehabbed 2017
Pratt through truss bridge over Lawsons Fork on old Emma Cudd Road
Open to pedestrians

Glendon Hill Road Bridge (Northampton County, Pennsylvania)
Built ca. 1935
Through truss bridge over Lehigh River on Glendon Hill Road in Easton
Open to traffic

GM&O - Mackinaw River Bridge (Tazewell County, Illinois)
Through truss bridge over Mackinaw River on Abandoned GM&O RR N of Green Valley
Abandoned

GN - Sioux Falls Bridge (Minnehaha County, South Dakota)
Lost Pratt through truss bridge over Big Sioux River on Great Northern Railway
Replaced by a new bridge

GNRR - Cartecay River Bridge (Gilmer County, Georgia)
Rail bridge on original Atlanta-Knoxville mainline of the Louisville and Nashville Railroad.
5 panel, pin connected, Pratt through truss bridge over Cartecay River on Georgia Northeastern Railroad in Ellijay
Open to traffic

GNRR - Toccoa River Bridge (Fannin County, Georgia)
Built 1926, carried the L&N Railroad, later acquired by CSX, sold by CSX to GNRR in the late 1980's
Pratt through truss bridge over CR 96 (River Road) & the Toccoa River on GNRR Railroad in McCaysville
Open to traffic

Goat Island Driveway Bridge (Alamance County, North Carolina)
(Main design: Warren pony truss)
Abandoned warren pony truss bridge over Haw River (West Channel) on Driveway
Abandoned

Goldsberry Creek CR 825W Bridge (Boone County, Indiana)
Built ca. 1920; replaced 2001
Lost pony truss bridge over Goldsberry Creek on CR 825 W
Replaced by new bridge

Goldsberry Creek CR 950W Bridge (Boone County, Indiana)
Lost pony truss bridge over Goldsberry Creek on CR 950 West
Replaced by a new bridge

Golf Course Road Bridge (Oneida County, New York)
Built ca.1885 and possibly relocated in 1910; rehabilitated 1959
Through truss bridge over Mohawk River on Golf Course Road in Rome
Open to traffic

Gondola Avenue Bridge (Macon County, Missouri)
Pony truss bridge over North Fork Claybank Creek on Gondola Avenue
Derelict/abandoned

Goodrich Bridge (Ogemaw County, Michigan)
Pony truss bridge over a tributary of East Branch Tittabawassee River next to Greenwood Road (CH F18)
Open to pedestrians only

Goodwater Creek CR 233 Bridge (Audrain County, Missouri)
Built 1924 on a state highway, later relocated here
Pony truss bridge over Goodwater Creek on CR 233
Open to traffic

Goodwin Road Bridge (Ionia County, Michigan)
Built 1909 by the Riverside Bridge Company of Martin's Ferry, Ohio
Through truss bridge over Grand River on Goodwin Road
Closed to all traffic

Goolsby Creek Bridge (Richardson County, Nebraska)
Built 1915
Through truss bridge over Goolsby Creek on CR 714
Open to traffic

Goolsby Creek Bridge (Richardson County, Nebraska)
Built 1935; rehabilitated 1954
Pony truss bridge over Goolsby Creek on CR 710
Open to traffic

Goose Creek Bridge (Caldwell County, Missouri)
Built ca. 1930; replaced 2007
Lost pony truss bridge over Goose Creek on John Deere Road
Replaced by new bridge

Gordon Bridge (Butler County, Kansas)
Built in 1885 by the Kansas City Bridge & Iron Co. immediately before they built the nearby Bois d'arc Bridge. Bypassed by new bridge in 1985
Abandoned through truss bridge over Walnut River on SW 163rd, west of Gordon
Abandoned with deck removed

Gorge Dam Powerhouse Bridge (Whatcom County, Washington)
Built 1938
Pratt through truss bridge over Skagit River on Gorge Dam Access Road
Open to private traffic

Goshen Land Company Bridge (Rockbridge County, Virginia)
Built 1890, Rehabilitated 2001-02
Two-span Pratt through truss bridge over Calfpasture River on Route 746 in Goshen
Open to traffic

Goshen Road Rest Area bridge (Jefferson County, Illinois)
Built 1991
Modern pratt pony truss bridge over Drainage Ditch on Pedestrian Walkway behind Goshen Road Rest Area building off westbound I-64
Open to pedestrians

Gospel Ridge Road Bridge (Schuyler County, Missouri)
Built 1909 by the Illinois Steel Bridge Co.; relocated here ca. 1932
Pratt through truss bridge over Chariton River on Gospel Ridge Road in Lancaster
Closed to all traffic

Gospel Street Bridge (Orange County, Indiana)
Built 1880 by the Cleveland Bridge and Iron Company.
Through truss bridge over Lick Creek on Gospel Street in Paoli
Restored and open for traffic

Gould Bridge (Kingfisher County, Oklahoma)
Built 1918
Through truss bridge over Cimarron River on N2935
Closed to all traffic

Gould Farm Bridge (Caldwell County, Missouri)
Built 1885 by the Cleveland Bridge Co.; replaced 1990
Lost through truss bridge over Shoal Creek on Gould Farm Road northeast of Kingston
Replaced by concrete bridge

Government Bridge (Scott County, Iowa)
Built 1872, Replaced 1895
Lost Pratt through truss bridge over Mississippi River on Railroad and Road
Replaced by a new bridge because of an icy flood storm

Governor's Bridge (Prince George's County, Maryland)
Built 1912
Through truss bridge over Patuxent River on Governor Bridge Road in Bowie
Open to one-lane traffic

Gower Road Bridge (Branch County, Michigan)
Built 1900
Pony truss bridge over Coldwater River on Gower Road
Closed to all traffic

GR&I - St. Mary's River bridge (Adams County, Indiana)
Built 1898; Replaced 2010; Relocated 2017
Pratt through truss bridge over St. Mary's River on Chicago Fort Wayne and Eastern Railroad via lease from CSX Transportation(nee Conrail, Penn Central, Pennsylvania Railroad, Grand Rapids and Indiana Railroad)
Replaced, dismantled and saved for possible reuse.

GR&I - Wabash River Bridge (Adams County, Indiana)
Part of the Grand Rapids and Indiana Railroad "Fishing Line" from Cincinatti to Northern Michigan in conjunction with the Pere Marquette Railroad, later part of the Pennsylvania Railroad empire.
Abandoned through truss bridge over Wabash River on former Penn Central (ex- Grand Rapids and Indiana Railroad, Pennsylvania Railroad) Not included in Conrail system after Penn Central failure. in Ceylon, between Geneva and Berne.
Abandoned, South span removed, North one remains. Original South span damaged in derailment and replaced. After abandonment, newer South span removed and reused in unknown location.

Graham Church Bridge (Jennings County, Indiana)
(Main design: Pratt through truss)
Built in 1906 by the Pan American Bridge Company of New Castle, IN; replaced in 1986.
Lost Pratt through truss bridge over Graham Creek on County Road 600 East
Replaced by a new bridge