There are 8,743 bridges in this category · Only showing 6,687 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.

Merrill Railroad Bridge (Lincoln County, Wisconsin)
Built 1914 using a relocated 1895 Truss
Abandoned pratt through truss bridge over Wisconsin River on Abandoned Milwaukee Road
Abandoned

Metacinah Creek Bridge (Grant County, Indiana)
Built ca. 1905; replaced 1996
Lost pony truss bridge over Metacinah Creek on Largo Road
Replaced by new bridge

Methow River Bridge (Okanogan County, Washington)
Built 1929; rehabilitated 1950
Through truss bridge over Methow River on WA 20 in Winthrop
Open to traffic

Metropolis Bridge (Massac County, Illinois)
(Main design: Pennsylvania through truss)
Built 1917 by the American Bridge Co. under the direction of engineers C. H. Cartlidge and Ralph Modjeski
Six-span through truss bridge over the Ohio River on the Canadian National Railway at Metropolis
Open to railroad traffic

Metz Road Bridge (Montgomery County, Pennsylvania)
Built 1896; rehabilitated 1960 Removed in 2007
Lost Pony truss bridge over Towamencin Creek on Metz Road in Towamencin Township.
Replaced by a new bridge

Miami Creek MO 52 Bridge (Bates County, Missouri)
Built 1924; replaced 2012
Lost through truss bridge over Miami Creek on MO 52
Replaced by a new bridge

Michael Rd Bridge (Montgomery County, Ohio)
Pratt pony truss bridge over Little Bear Creek on Michael Rd
Open to traffic

Michigan Avenue Bridge (Erie County, New York)
Built 1960, rehabilitated in 1970s and 1996
Vertical lift bridge over Buffalo River on Michigan Avenue in Buffalo
Open to traffic

Michigan Avenue Bridge (Cook County, Illinois)
Built 1920; repaired after freak accident 1992
Bascule bridge over Main Branch Chicago River on Michigan Avenue (former US 14) in Chicago
Open to traffic

Michigan Avenue-Thornapple River Bridge (Older) (Barry County, Michigan)
Lost Pratt through truss bridge over Thornapple River on Michigan Avenue
Replaced by a new bridge

Middle Bar Bridge (Calaveras County, California)
Built 1912
Pratt through truss bridge over Mokelumne River on Middle Bar Road
Open to traffic

Middle Bridge (Windsor County, Vermont)
Built 1877 by King Bridge Co.; Demolished 1966
Lost Pratt through truss bridge over Ottauquechee River on Mountain Ave.
Replaced by a new bridge

Middle Caney Creek Bridge (Chautauqua County, Kansas)
Built ca. 1910
Lost Pratt through truss bridge over Middle Caney Creek on a local road, 1.0 mi. north and 1.0 mi. east of Peru
Removed but not replaced

Middle Cedar Creek Bridge (Smith County, Kansas)
Built 1900, bypassed 2000
Pony truss bridge over Middle Cedar Creek, 1.0 mi. north and 1.0 mi. west of Kensington
Intact but closed to all traffic

Middle Creek Bridge (Miami County, Kansas)
Built 1907
Through truss bridge over Middle Creek on 379th Street, 1.5 mi. south and 1.8 mi. west of New Lancaster
Open to traffic

Middle Creek Bridge (Mahaska County, Iowa)
Built circa 1898; Likely removed in the late 1990s or early 2000s
Lost Pratt pony truss bridge over Middle Creek on Ventura Avenue
Removed but not replaced

Middle Creek Bridge (Franklin County, Kansas)
Built 1908
Pratt pony truss bridge over Middle Creek, 2.9 mi. north and 2.5 mi. east of Princeton
Long abandoned with deck removed

Middle Creek Road Bridge (Lancaster County, Pennsylvania)
Built 1909; rehabilitated 1925
Pony truss bridge over Cocalico Creek on Middle Creek Road in Rothsville
Historic Truss Bridge Demolished and Replaced With Covered Bridge

Middle Fork Anderson River Apricot Road (Perry County, Indiana)
Built ca. 1895; Replaced 1988
Lost Pratt through truss bridge over Middle Fork Anderson River on Apricot Road, CR 37
Replaced by a new bridge

Middle Fork Anderson River Bridge (Perry County, Indiana)
Built ca. 1910; replaced 1992
Lost pony truss bridge over Middle Fork Anderson River on CR 101
Replaced by new bridge

Middle Fork Anderson River Canada Road (Perry County, Indiana)
Built ca. 1893; Replaced 1988
Lost Pratt through truss bridge over Middle Fork Anderson River on Canada Road, CR 164
Replaced by a new bridge

Middle Fork City Street Bridge (Monroe County, Missouri)
Built 1955
Pony truss bridge over Middle Fork Salt River on a city street in Paris
Open to traffic

Middle Fork CR 141 Bridge (Monroe County, Missouri)
Built ca. 1920
Pony truss bridge over Flat Creek on CR 141
Open to traffic

Middle Fork Deer Creek Bridge (Perry County, Indiana)
Built ca. 1920; replaced 1996
Lost pony truss bridge over Middle Fork Deer Creek on CR 81
Replaced by new bridge

Middle Fork Holston River Bridge (Smyth County, Virginia)
Built 1885 by the King Iron Bridge Co.; rehabilitated 2005
Pratt through truss bridge over Middle Fork Holston River on E. Chilhowie Street
Closed to traffic pending repairs to damaged endpost caused by drunk driver.

Middle Fork Kentucky River KY 30 Bridge (Breathitt County, Kentucky)
Built 1935
Pratt through truss bridge over Middle Fork Kentucky River on KY 30
Open to traffic

Middle Fork River Bridge (Upshur County, West Virginia)
Built in 1893 by the Canton Bridge Company of Canton, Ohio
Through truss bridge over Middle Fork River on CR 5/26
Open to traffic

Middle Fork Wildcat Creek Bridge (Clinton County, Indiana)
Built ca.1890's; replaced 1994
Lost through truss bridge over Middle Fork Wildcat Creek on CR 675 W at 990N-680W
Replaced by new bridge

Middle Fork Wildcat Creek CR 200E Bridge (Carroll County, Indiana)
Built ca. 1895
Lost Pratt pony truss bridge over Middle Fork Wildcat Creek on County Road 200 East
Replaced by a new bridge

Middle Fork Wildcat Creek CR 500E Bridge (Clinton County, Indiana)
Built ca. 1898 by the Lafayette Bridge Company
Lost Bedstead Pratt pony truss bridge over Middle Fork Wildcat Creek on County Road 500 East
Replaced by a new bridge

Middle Fork Wildcat Creek CR 700S Bridge (Carroll County, Indiana)
Built ca. 1905
Lost Pratt pony truss bridge over Middle Fork Wildcat Creek on County Road 700 South
Replaced by a new bridge

Middle Fork Wildcat Creek CR 800S Bridge (Carroll County, Indiana)
Built ca. 1900
Lost Pratt pony truss bridge over Middle Fork Wildcat Creek on County Road 800 South
Replaced by a new bridge

Middle Fork-South Boston Road Bridge (Washington County, Indiana)
Built ca. 1930
Lost pony truss bridge over Middle Fork Blue River on Canton-South Boston Road
Replaced by a new bridge

Middle Nodaway River Bridge (Adams County, Iowa)
Built ca. 1920; rehabilitated 1974
Through truss bridge over Middle Nodaway River on 125th Street
Replaced by a new bridge

Middle Nodaway River Bridge (Adair County, Iowa)
Built ca. 1950
Through truss bridge over Middle Nodaway River on Fallow Avenue
Open to traffic

Middle Percha Creek Bridge (Sierra County, New Mexico)
Built 1929
Through truss bridge over Middle Percha Creek on NM 152
Open to traffic

Middle Raccoon River Bridge (Carroll County, Iowa)
Built 1951
Through truss bridge over Middle Raccoon River on Raven Road
Open to traffic

Middle River Bridge (Adair County, Iowa)
Built 1950
Through truss bridge over Middle River on County Road G39
Open to traffic

Middle River Bridge (Adair County, Iowa)
Built 1948
Through truss bridge over Middle River on Quebec Avenue
Open to traffic

Middle River Bridge (Madison County, Iowa)
Built 1932
Through truss bridge over Middle River on CR R35 (Bevington Park Road)
Open to traffic

Middle River Bridge (Adair County, Iowa)
Built ca. 1920; rehabilitated 1993
Through truss bridge over Middle River on 320th Street
Open to traffic

Middle River Bridge (Adair County, Iowa)
Built ca. 1950
Pony truss bridge over Middle River on 270th Street
Open to traffic

Middle River Bridge (Madison County, Iowa)
Built ca. 1930; rehabilitated 1948
Through truss bridge over Middle River on Adair Madison Avenue
Open to traffic

Middle River Route 703 Bridge (Augusta County, Virginia)
Built 1915
Pony truss bridge over Middle River on Hewitt Rd (Route 703)
Replaced by a new bridge

Middle River Route 774 Bridge (Augusta County, Virginia)
Built 1903 by the Brackett Bridge Co.; Replaced 2010
Lost Pratt through truss bridge over Middle River on Cline River Road (Route 774)
Replaced by new bridge

Middle Yuba River Bridge (Sierra County, California)
Lost Pratt pony truss bridge over Middle Yuba River on Unnamed Dirt Road
Collapsed

Middleton Bridge (Warren County, New York)
Built 1896 by Groton Bridge Co.; rehabilitated 1969; closed 2009
Pin connected Pratt pony truss bridge over Schroon River on CR 10
Intact but closed to all traffic

Middlexsex Winooski River Bridge (Washington County, Vermont)
Built by American Bridge Co. 1928, Replaced 2003 by Bailey bridge, and again by stringer in 2010
2 span Pratt Through Truss
Replaced by a new bridge

Midland Fredericktown Road Bridge (Columbiana County, Ohio)
Built 1893 by the Penn Bridge Co.; rehabilitated 2004
Through truss bridge over North Fork Little Beaver Creek on Midland Fredericktown Road (TR 1038) in Calcutta
Open to traffic

Midtown Bridge (Bergen County, New Jersey)
Built 1900; Trolley service ended 1938; Converted to road use 1940; Replaced 2018
Lost Pratt through truss bridge over Hackensack River on Public Service Corporation of New Jersey
No longer exists

Midvale Bridge (Washington County, Idaho)
Built 1911 by the J.H. Forbes Co.; replaced 1995
Lost two-span through truss bridge over Weiser River at Midvale
Replaced by new bridge

Mile Creek Road Bridge (Knox County, Ohio)
Built ca 1875; Unknown Event Occured in 1926. Rehabilitated 1975
Cast and Wrought Iron Half-hip Pratt pony truss bridge over Mile Creek on Mile Creek Road (TR-385)
Open to traffic

Mile Load Road Bridge (Fulton County, Illinois)
Deck truss bridge over the BNSF Railroad on Mile Load Road (TR 42)
Open to traffic, one lane, 10 ton weight limit

Milford Bridge (Somerset County, Pennsylvania)
Built 1900
Pratt pony truss bridge over Coxes Creek on Abandoned TR486
Open to pedestrians

Milford Bridge (Decatur County, Indiana)
Built ca. 1910; replaced 1995
Lost pony truss bridge over Clifty Creek on CR 100 N at 100N-800W
Replaced by new bridge

Military Road Bridge (Older) (Woodbury County, Iowa)
Built 1882; Camelback built by South Dakota to replace pile trestle later; Replaced 1923
Lost Pratt through truss bridge over Big Sioux River on Road
Replaced by a new bridge

Military Street Bridge (Old) (St. Clair County, Michigan)
Built 1884; replaced 1914
Lost Pratt through truss bridge over Black River on Military Street
Demolished and replaced

Milk River Bridge (Blaine County, Montana)
Built 1930
Through truss bridge over Milk River on CR 300
Open to traffic

Mill Bridge (Faulkner County, Arkansas)
Built 1921; bypassed 1993
Lost through truss bridge over Cadron Creek on Mill Bridge Road (CR 280)
Replaced by new bridge

Mill Bridge (Westmoreland County, Pennsylvania)
Built 1938; rehabilitated 1992
Through truss bridge over Kiskiminetas River on Mill Bridge Road in West Leechburg
Open to traffic

Mill City Trail - North Fork Santiam River Bridge (Marion County, Oregon)
Built 1888 near San Jose, CA, Relocated to Mill City 1919.
Pratt through truss bridge over North Fork Santiam River on Mill City Trail
Open to pedestrians

Mill Creek Bridge (Cherokee County, Iowa)
Built 1891 by the George E. King Bridge Co.; bypassed in 2006 but appears to remain
Through truss bridge over Mill Creek on Old IA 21
Bypassed by a new bridge on a different alignment and abandoned

Mill Creek Bridge (Wabaunsee County, Kansas)
Built ca. 1935
Through truss bridge over Mill Creek on Willard Road, 1.0 mi. east and 0.2 mi. north of Maple Hill
Open to traffic

Mill Creek Bridge (Clarion County, Pennsylvania)
Built ca. 1910; Replaced 2003
Pony truss bridge over Mill Creek on Old State Rd
Replaced by a new bridge

Mill Creek Bridge (Venango County, Pennsylvania)
Built ca. 1885 by the Smith Bridge Co.
Pony truss bridge over Mill Creek on TR 522 (Dotter Road)
Open to traffic

Mill Creek Bridge (Crawford County, Indiana)
Built 1885; rehabilitated 2000
Through truss bridge over Mill Creek on CR 220 East
Open to traffic

Mill Creek Bridge (Lincoln County, Missouri)
Built 1887 by the St. Louis Bridge & Iron Co.; replaced 1995
Lost wrought iron pony truss bridge over Mill Creek on S. Mill Creek Road
Replaced by new bridge

Mill Creek Bridge (Putnam County, Indiana)
Built 1925; rehabilitated 1985
Pony truss bridge over Mill Creek on CR 450 South
Open to traffic

Mill Creek Bridge (Jackson County, West Virginia)
Built 1922
Through truss bridge over Mill Creek on CR 25
Open to traffic

Mill Creek Bridge (Jackson County, West Virginia)
Built 1926
Through truss bridge over Mill Creek on WV 87
Replaced by a new bridge

Mill Creek Bridge (Bourbon County, Kansas)
Abandoned Pratt through truss bridge over Mill Creek in Fort Scott
Abandoned with most of deck removed, but has intact walkway (cross at own risk)

Mill Creek Bridge (Owen County, Indiana)
(Main design: Pratt through truss)
Built in 1885 by the Wrought Iron Bridge Company with pony truss added ca.1910; replaced in 1989
Lost Pratt through truss bridge over Mill Creek on CR 1150N


Mill Creek Bridge (Adams County, Illinois)
Built 1894; replaced 1982
Lost Pratt through truss bridge over Mill Creek on Herleman Road (TR 76)
Replaced by new bridge

Mill Creek Bridge (Cherokee County, Iowa)
Built 1917
Through truss bridge over Mill Creek on L Avenue
Open to traffic

Mill Creek Bridge (Cedar County, Iowa)
Built 1889; Abandoned mid 1970's; Failed relocation to Lowden in 1996
Abandoned pratt pony truss bridge over Mill Creek
Abandoned

Mill Creek Bridge (Jackson County, Illinois)
Abandoned pony truss bridge over Mill Creek on Jacobini Road (Forest Road 377)
Wrecked following a flash flood

Mill Creek Bridge (Rock Island County, Illinois)
Lost Pratt through truss bridge over Mill Creek on Road
Replaced by a new bridge

Mill Creek Covered Bridge 35-80-63 (Union County, Ohio)
Built 2010
Pratt through truss bridge over Mill Creek on Thompson Road
Open to all traffic

Mill Creek CR 321 Bridge (Holt County, Missouri)
Built ca. 1920
Pony truss bridge over Mill Creek on CR 321
Open to traffic

Mill Creek CR 399 Bridge (Andrew County, Missouri)
Built 1925
Pony truss bridge over Mill Creek on CR 399
Open to traffic

Mill Creek Old US 36 Bridge (Caldwell County, Missouri)
Built 1922
Pony truss bridge over Mill Creek on Old US 36
Open to traffic

Mill Creek, Naans Branch (Owen County, Indiana)
Built c. 1905; Replaced in 1989
Lost Pratt Pony Truss
Replaced by a new bridge

Mill Creek-Fox Road Bridge (Washington County, Kansas)
Built ca. 1910
Pony truss bridge over Mill Creek on G-10.5 81, 0.5 mi. north and 2.5 mi. east of Haddam
Open to traffic

Mill Grove Bridge (Owen County, Indiana)
(Main design: Pratt through truss)
Through truss built in 1897 by the Massillon Bridge Company, pony truss added ca.1910 by the Rochester Bridge Company. Rehabilitated 2005
Through truss bridge over Mill Creek on CR 100 East (Tower Road)
Open to traffic

Mill Grove Road Bridge (Stephenson County, Illinois)
Built 1931
Pony truss bridge over Yellow Creek on S. Mill Grove Road, 3 mi. southeast of Pearl City
Open to traffic

Mill Mountain Road Bridge (Luzerne County, Pennsylvania)
Built 1883 by the Penn Bridge Co.; rehabilitated 2011
Pony truss bridge over Nescopeck Creek on Mill Mountain Road (TR 356)
Intact but closed to all traffic

Mill Road Bridge (Vanderburgh County, Indiana)
Built ca.1875 by the Columbia Bridge Works
Lost Pratt pony truss bridge over Little Creek on Mill Road (old alignment)
Replaced by a new bridge and road later realigned.

Mill Road Bridge (Livingston County, New York)
Former State Route 39 Bridge before highway rerouted to the east.
Pratt pony truss bridge over Little Conesus Creek on Wadsworth Park Trail
Open to pedestrians

Mill Road Bridge (Hunterdon County, New Jersey)
Built 1900; rehabilitated 2005
Pony truss bridge over Rockaway Creek on Mill Road
Open to traffic

Mill Road Bridge (Schenectady County, New York)
Relocated ca. 1983 from Parish, NY
Pratt pony truss bridge over Unnamed brook on Pedestrian Path
Open to pedestrians only

Mill Road Bridge in Evansburg State Park (Montgomery County, Pennsylvania)
Built ca. 1895; rehabilitated ca. 1985
Pony truss bridge over Skippack Creek on PA 4005 (Mill Road) in Evansburg State Park
Open to traffic

Mill Rock Bridge (Jackson County, Iowa)
Built 1913; Replaced 1995
Lost Pratt through truss bridge over Big Bear Creek on 33rd Avenue in Monmouth Township
Replaced by new bridge

Mill Shoals Bridge (White County, Illinois)
Through truss bridge over Skillet Fork west of Mill Shoals on CR 2500 (FAS 878), 0.5 mi. west of Mill Shoals
Closed to all traffic

Mill Stream Bridge (Schenectady County, New York)
Lost circa 1930
Lost through truss bridge
Demolished

Mill Street (Rat River) Bridge (Forest County, Wisconsin)
Pinned Pratt pony truss bridge over Rat River on Private industrial road
Open to private traffic

Mill Street - Prairie River Bridge (Lincoln County, Wisconsin)
Lost Pratt through truss bridge over Prairie River on Mill Street
Replaced by a new bridge in 1976

Mill Street Bridge (Tama County, Iowa)
Built 1911; Replaced 2013
Through truss bridge over Wolf Creek on Mill Street in Traer
Replaced by a new bridge

Mill Street Bridge (Miami County, Kansas)
Built ca. 1920, Demolished Ca. 2017.
Through truss bridge over Marias Des Cygnes River on 347th Street, 1.3 mi. east of Osawatomie
Lost

Mill Street- Kishequa(sic) Creek Bridge (Livingston County, New York)
Lost Pratt pony truss bridge over Keshequa Creek on Mill Street
Replaced by a new bridge

Millard's Bridge (Hamilton County, Iowa)
Built ?; Replaced 1923
Lost Pratt through truss bridge over Boone River on Webster City RFD No. 6
Replaced by a new bridge

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