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Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhoun County, MI

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhou...

Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.

Choctaw Bottoms Road Bridge, Spanning Choctaw Creek at Choctaw Bottoms Road, Denison, Grayson County, TX

Choctaw Bottoms Road Bridge, Spanning Choctaw Creek at Choctaw Bottoms...

Significance: The Choctaw Bottoms Road Bridge is one of two extant bridges in Texas known to have been erected by the American Bridge Company of New York, a major twentieth-century bridge building firm. Survey... More

Stono River Bridge, Spanning Stono River between James & Johns Islands, Charleston, Charleston County, SC

Stono River Bridge, Spanning Stono River between James & Johns Islands...

Significance: The Stono River Bridge is identified as "Charleston 3) in the South Carolina Department of Transportation's Metal Truss Highway Bridge Inventory. The bridge is noteworthy in that it represents th... More

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Saginaw County, MI

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Sagina...

Picryl description: Public domain image of a fountain, historic landmark, classical or neoclassical architecture, free to use, no copyright restrictions.

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Saginaw County, MI

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Sagina...

Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.

North Branch Quantico Creek Bridge, Prince William Forest Park, on NPS Route 406 spanning north branch of Quantico Creek, Dumfries, Prince William County, Virginia

North Branch Quantico Creek Bridge, Prince William Forest Park, on NPS...

Significance: This bridge is representative of a common bridge type that became indigenous to the late nineteenth to early twentieth century landscape of America: a low Pratt pony metal truss bridge. The bridg... More

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arkadelphia, Clark County, AR

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arka...

Significance: The American practice of using pins for bridge connections lasted from the 1860s until the 1920s. DeGray Creek Bridge is the only known surviving pin-connected Pratt pony truss bridge in Arkansas... More

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arkadelphia, Clark County, AR

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arka...

Significance: The American practice of using pins for bridge connections lasted from the 1860s until the 1920s. DeGray Creek Bridge is the only known surviving pin-connected Pratt pony truss bridge in Arkansas... More

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganville, Allegany County, MD

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...

Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Railroad, Hudson, St. Croix County, WI

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Ra...

Significance: The 7th Street Bridge was one of two remaining Howe truss bridges in Wisconsin identified in a 1981 survey. The other example was the Old Wells Road Bridge, which was also built by the Chicago, S... More

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Railroad, Hudson, St. Croix County, WI

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Ra...

Significance: The 7th Street Bridge was one of two remaining Howe truss bridges in Wisconsin identified in a 1981 survey. The other example was the Old Wells Road Bridge, which was also built by the Chicago, S... More

Firehole River Bridge, Spanning Firehole River at Fountain Freight Road, Lake, Teton County, WY

Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...

Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More

Firehole River Bridge, Spanning Firehole River at Fountain Freight Road, Lake, Teton County, WY

Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...

Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More

Firehole River Bridge, Spanning Firehole River at Fountain Freight Road, Lake, Teton County, WY

Firehole River Bridge, Spanning Firehole River at Fountain Freight Roa...

Significance: This bridge is one of two remaining Army Corps of Engineers bridges in Yellowstone National Park. It represents the significant role that the Corps of Engineers played in the early years of road ... More

McGilvray Road Bridge No. 4, Van Loon Wildlife Area, La Crosse, La Crosse County, WI

McGilvray Road Bridge No. 4, Van Loon Wildlife Area, La Crosse, La Cro...

See also HAER WI-22 for additional documentation. Significance: In 1897, Charles M. Horton of Minnesota received a patent for an improvement on trusses and bridges. According to Horton, riveted and bolted conn... More

McGilvray Road Bridge No. 4, Van Loon Wildlife Area, La Crosse, La Crosse County, WI

McGilvray Road Bridge No. 4, Van Loon Wildlife Area, La Crosse, La Cro...

See also HAER WI-22 for additional documentation. Significance: In 1897, Charles M. Horton of Minnesota received a patent for an improvement on trusses and bridges. According to Horton, riveted and bolted conn... More

Bridge of Pines, Ermatinger Drive in Irvine Park, Chippewa Falls, Chippewa County, WI

Bridge of Pines, Ermatinger Drive in Irvine Park, Chippewa Falls, Chip...

Significance: In 1906, the city of Chippewa Falls established Irvine Park. The Bridge of Pines represents two phases of the park's development, In 1907 the Wisconsin Bridge and Iron Company erected a one-span... More

Fountain Island Bridge, Lakeside Park between Promen Drive & Fountain Island, Fond du Lac, Fond du Lac County, WI

Fountain Island Bridge, Lakeside Park between Promen Drive & Fountain ...

Significance: The Fountain Island Bridge is one of seven remaining bowstring truss bridges in the State of Wisconsin. Survey number: HAER WI-23 Building/structure dates: ca. 1870 Initial Construction Buildin... More

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, MI

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, ...

Significance: The Sturgeon Road Bridge is significant as a long span, pony steel truss structure typical of that era of bridge construction. Survey number: HAER MI-73

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, MI

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, ...

Significance: The Sturgeon Road Bridge is significant as a long span, pony steel truss structure typical of that era of bridge construction. Survey number: HAER MI-73

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, MI

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, ...

Significance: The Sturgeon Road Bridge is significant as a long span, pony steel truss structure typical of that era of bridge construction. Survey number: HAER MI-73

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersville, Frederick County, MD

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersv...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the country between the 1870s and 1930s, facilitatin... More

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersville, Frederick County, MD

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersv...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the country between the 1870s and 1930s, facilitatin... More

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersville, Frederick County, MD

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersv...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the country between the 1870s and 1930s, facilitatin... More

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersville, Frederick County, MD

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersv...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the country between the 1870s and 1930s, facilitatin... More

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myersville, Frederick County, MD

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myer...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the county between the 1870s and 1930s, facilitating... More

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myersville, Frederick County, MD

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myer...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the county between the 1870s and 1930s, facilitating... More

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013, Plummers Landing, Fleming County, KY

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013,...

Significance: The Pratt Half Hipp Pony Truss was constructed in 1893 by the Pittsburgh Bridge Company. It is the only documented bridge in the state known to have been constructed by this company. Survey numb... More

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013, Plummers Landing, Fleming County, KY

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013,...

Significance: The Pratt Half Hipp Pony Truss was constructed in 1893 by the Pittsburgh Bridge Company. It is the only documented bridge in the state known to have been constructed by this company. Survey numb... More

Grassmere Road Bridge, Spanning Pinnebog River, Caseville, Huron County, MI

Grassmere Road Bridge, Spanning Pinnebog River, Caseville, Huron Count...

Significance: With a total bridge length of 21.9m (72'), it is an unusual for a Pratt Pony Truss bridge to be this long. Survey number: HAER MI-85

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Address changed from "Spanning the Flat River at Burroughs Drive, Lowell vic., Kent County, Michigan" to "Spanning Looking Glass river on Portland Riverwalk, Portland, Ionia County, Michigan" because the bridge... More

Mitchell's Mill Bridge, Spanning Winter's Run on Carrs Mill Road, west of Bel Air, Bel Air, Harford County, MD

Mitchell's Mill Bridge, Spanning Winter's Run on Carrs Mill Road, west...

Significance: The Mitchell's Mill Bridge is a surviving example of the late 19th century wrought iron bridges once found throughout rural Maryland. The Pratt pony truss employed in the Mitchell's Mill span was... More

Burt Road Bridge, Spanning east fork of west branch of St. Joseph of Maumee River, Hillsdale, Hillsdale County, MI

Burt Road Bridge, Spanning east fork of west branch of St. Joseph of M...

Significance: The Burt Road Bridge is the only known surviving example of a Michigan bridge built by the Ohio Bridge Company of Toledo, Ohio. This firm was one of many short lived bridge companies that operate... More

Custer Road Bridge, Spanning Black River Drain, Carsonville, Sanilac County, MI

Custer Road Bridge, Spanning Black River Drain, Carsonville, Sanilac C...

Significance: With a main span of 27.52m (90.3 feet), this is among the longest known surviving Warren pony truss bridges in Michigan, since only fifteen percent of the total exceed eighty feet. Survey number:... More

Beachside Avenue Bridge, Westport, Fairfield County, CT

Beachside Avenue Bridge, Westport, Fairfield County, CT

Significance: Primarily one of local significance. This bridge is a Warren-Pony Truss and is one of several in the area of Fairfield County. Survey number: HAER CT-5 Building/structure dates: 1891 Initial Co... More

Beachside Avenue Bridge, Westport, Fairfield County, CT

Beachside Avenue Bridge, Westport, Fairfield County, CT

Significance: Primarily one of local significance. This bridge is a Warren-Pony Truss and is one of several in the area of Fairfield County. Survey number: HAER CT-5 Building/structure dates: 1891 Initial Co... More

Laramie River Bridge, County Road 204, Wheatland, Platte County, WY

Laramie River Bridge, County Road 204, Wheatland, Platte County, WY

Significance: The Laramie River Bridge is an excellent early example of a pin connected, five panel Pratt Pony truss, a relatively common truss configuration in Wyoming. Survey number: HAER WY-80 Building/str... More

Belleville Road Bridge, Spanning Belleville Lake, Belleville, Wayne County, MI

Belleville Road Bridge, Spanning Belleville Lake, Belleville, Wayne Co...

Address changed from "Spanning Belleville Lake, Belleville, Wayne County, Michigan" to "Spanning the Flat River at Burroughs Drive, Belleville, Wayne County, Michigan," because the bridge was moved in 1995. It ... More

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 550 West (Vanada Road), Newburgh, Warrick County, IN

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 5...

Significance: This bridge is an example of a pinned Pratt pony truss founded on caissons with one steel I-beam approach span at each end of the truss. This bridge is of significance because of the caisson foun... More

McCann Road Bridge, Spanning Thornapple River at McCann Road, Hastings, Barry County, MI

McCann Road Bridge, Spanning Thornapple River at McCann Road, Hastings...

Significance: The McCann Road bridge is the oldest and one of the few multi-span, pin connected, Pratt Pony Highway Bridges surviving in Michigan. It was listed in the National Register of Historic Places in 1... More

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambria Road, Camden, Hillsdale County, MI

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambr...

Significance: The Cambria Road Bridge is the only known surviving example of a bridge built by an Ohio company of this era in Michigan. Survey number: HAER MI-43 Building/structure dates: 1899 Initial Construction

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambria Road, Camden, Hillsdale County, MI

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambr...

Significance: The Cambria Road Bridge is the only known surviving example of a bridge built by an Ohio company of this era in Michigan. Survey number: HAER MI-43 Building/structure dates: 1899 Initial Construction

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambria Road, Camden, Hillsdale County, MI

Cambria Road Bridge, Spanning West branch of St. Joseph River on Cambr...

Significance: The Cambria Road Bridge is the only known surviving example of a bridge built by an Ohio company of this era in Michigan. Survey number: HAER MI-43 Building/structure dates: 1899 Initial Construction

Madison County Bridge 90, Spanning Killbuck Creek on County Road No. 600, Moonville, Madison County, IN

Madison County Bridge 90, Spanning Killbuck Creek on County Road No. 6...

Significance: Madison County Bridge No. 90 is an unusual variation of a Warren Pony truss, and the second longest survivor of its type in Indiana. The bridge was surveyed and highly rated by historian James L.... More

Madison County Bridge 90, Spanning Killbuck Creek on County Road No. 600, Moonville, Madison County, IN

Madison County Bridge 90, Spanning Killbuck Creek on County Road No. 6...

Significance: Madison County Bridge No. 90 is an unusual variation of a Warren Pony truss, and the second longest survivor of its type in Indiana. The bridge was surveyed and highly rated by historian James L.... More

Suger Creek Bridge, Spanning Suger Creek, Hopkinsville, Christian County, KY

Suger Creek Bridge, Spanning Suger Creek, Hopkinsville, Christian Coun...

Significance: Oldest dated bedpost pony truss in Kentucky. The only example in the State built by the Groton Bridge Company of New York. Survey number: HAER KY-7 Building/structure dates: 1894 Initial Construction

Taylor Bridge, Spanning Middle River at Bayfield Road, Amnicon Falls, Douglas County, WI

Taylor Bridge, Spanning Middle River at Bayfield Road, Amnicon Falls, ...

Significance: Crossing the Middle River in rural Douglas County in northwest Wisconsin, the Taylor Bridge is a timber, bolt-connected, pony truss of queen-post design. Constructed in 1929-30, it is the last rem... More

Sprague Bridge, Over Yellow River between Armenia & Necedah, Necedah, Juneau County, WI

Sprague Bridge, Over Yellow River between Armenia & Necedah, Necedah, ...

Significance: The Sprague bridge is one of the state's finest remaining, unaltered, examples of a Pratt half-hip pony truss. The two span structure is one of the earliest bridges constructed under the auspices... More

Ten Eyck Road Bridge, Spanning Sugar River, Brodhead, Green County, WI

Ten Eyck Road Bridge, Spanning Sugar River, Brodhead, Green County, WI

Significance: The Ten Eyck Road Bridge is a single lane, two span Pratt Standard pony truss that was erected in 1907. Built by the Elkhart Bridge and Iron Company of Elkhart, Indiana, the structure was identi... More

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhoun County, MI

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhou...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Horton Road Bridge, Spanning Black Creek, Adrian, Lenawee County, MI

Horton Road Bridge, Spanning Black Creek, Adrian, Lenawee County, MI

Significance: The bridge is part of Lenawee County's local roadway system which primarily serves existing agricultural development and related traffic. The bridge is a steel camelback, pony truss, structure wi... More

Horton Road Bridge, Spanning Black Creek, Adrian, Lenawee County, MI

Horton Road Bridge, Spanning Black Creek, Adrian, Lenawee County, MI

Significance: The bridge is part of Lenawee County's local roadway system which primarily serves existing agricultural development and related traffic. The bridge is a steel camelback, pony truss, structure wi... More

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Saginaw County, MI

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Sagina...

Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Saginaw County, MI

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Sagina...

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

North Branch Quantico Creek Bridge, Prince William Forest Park, on NPS Route 406 spanning north branch of Quantico Creek, Dumfries, Prince William County, Virginia

North Branch Quantico Creek Bridge, Prince William Forest Park, on NPS...

Significance: This bridge is representative of a common bridge type that became indigenous to the late nineteenth to early twentieth century landscape of America: a low Pratt pony metal truss bridge. The bridg... More

Tongue River Bridge, Spanning Tongue River on County Road No. 97, Monarch, Sheridan County, WY

Tongue River Bridge, Spanning Tongue River on County Road No. 97, Mona...

Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arkadelphia, Clark County, AR

DeGray Creek Bridge, Spanning DeGray Creek at Blish Road (CR 50), Arka...

Significance: The American practice of using pins for bridge connections lasted from the 1860s until the 1920s. DeGray Creek Bridge is the only known surviving pin-connected Pratt pony truss bridge in Arkansas... More

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganville, Allegany County, MD

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...

Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganville, Allegany County, MD

Proenty Road Bridge, Spanning Jennings Run at Proenty Road, Corriganvi...

Significance: The Proenty Road Bridge is significant as one of three steel pony truss bridges remaining in Allegany County. These and other similar bridges were important in the growth of the transportation ne... More

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Railroad, Hudson, St. Croix County, WI

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Ra...

Significance: The 7th Street Bridge was one of two remaining Howe truss bridges in Wisconsin identified in a 1981 survey. The other example was the Old Wells Road Bridge, which was also built by the Chicago, S... More

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Railroad, Hudson, St. Croix County, WI

Seventh Street Bridge, Spanning Chicago, St.Paul, Minneapolis,Omaha Ra...

Significance: The 7th Street Bridge was one of two remaining Howe truss bridges in Wisconsin identified in a 1981 survey. The other example was the Old Wells Road Bridge, which was also built by the Chicago, S... More

Road S-47 Bridge, Spanning Deep Creek on Road S-47, Ruby, Chesterfield County, SC

Road S-47 Bridge, Spanning Deep Creek on Road S-47, Ruby, Chesterfield...

Significance: The Road S-47 bridge is identified as Chesterfield 2 in the SCDHPT's Metal Truss Highway Bridge Inventory and represents one of 148 metal truss bridges remaining in South Carolina. It is one of f... More

Poplar Grove Road Bridge, Spanning Chicago & Northwestern Railroad, Lebanon, Dodge County, WI

Poplar Grove Road Bridge, Spanning Chicago & Northwestern Railroad, Le...

Significance: The Poplar Grove Road Bridge utilizes a single span, two lane, Warren Double-Intersection pony truss. Erected in 1883 by the Alden and Lassig Bridge and Iron Works of Chicago for the Chicago & Nor... More

Saluda County Bridge No. 4, Road S-26 spanning Clouds Creek, Jones Crossroads, Saluda County, SC

Saluda County Bridge No. 4, Road S-26 spanning Clouds Creek, Jones Cro...

Significance: The significance of the bridges lies not so much in its design, as in the fact that it is the only known Warren pony truss constructed in South Carolina by the Austin Brothers Bridge Company of At... More

Kentucky Route 708 Bridge, Spanning Middle Fork of Kentucky River, Tallega, Lee County, KY

Kentucky Route 708 Bridge, Spanning Middle Fork of Kentucky River, Tal...

Significance: Only mixed pony-through truss by Oregonia Bridge Company in Kentucky. Survey number: HAER KY-15 Building/structure dates: 1917 Initial Construction

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, MI

Sturgeon Road Bridge, Spanning Sturgeon River, Baraga, Baraga County, ...

Significance: The Sturgeon Road Bridge is significant as a long span, pony steel truss structure typical of that era of bridge construction. Survey number: HAER MI-73

McGilvray Road Bridge No. 6, Van Loon Wildlife Area, La Crosse, La Crosse County, WI

McGilvray Road Bridge No. 6, Van Loon Wildlife Area, La Crosse, La Cro...

See also HAER WI-22 for additional documentation. Significance: In 1897, Charles M. Horton of Minnesota received a patent for an improvement on trusses and bridges. According to Horton, riveted and bolted conn... More

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersville, Frederick County, MD

Stauffer Road Bridge, Spanning Israel Creek at Stauffer Road, Walkersv...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the country between the 1870s and 1930s, facilitatin... More

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myersville, Frederick County, MD

Harmony Road Bridge, Harmony Road spanning Little Catoctin Creek, Myer...

Significance: This bridge is associated with the development of transportation in Frederick County. Metal truss bridges were the most popular bridge form in the county between the 1870s and 1930s, facilitating... More

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013, Plummers Landing, Fleming County, KY

Kentucky 1013 Bridge, Spanning Sand Lick Creek at Kentucky Route 1013,...

Significance: The Pratt Half Hipp Pony Truss was constructed in 1893 by the Pittsburgh Bridge Company. It is the only documented bridge in the state known to have been constructed by this company. Survey numb... More

Morse Near Bridge, Spanning North Branch of Pentwater River, Pentwater, Oceana County, MI

Morse Near Bridge, Spanning North Branch of Pentwater River, Pentwater...

Significance: The bridge is a single-span steel, riveted Warren Pony Truss built according to Michigan State Highway Department standard plans, fabricated by the Groton Bridge Company of Groton, New York. It is... More

Morse Near Bridge, Spanning North Branch of Pentwater River, Pentwater, Oceana County, MI

Morse Near Bridge, Spanning North Branch of Pentwater River, Pentwater...

Significance: The bridge is a single-span steel, riveted Warren Pony Truss built according to Michigan State Highway Department standard plans, fabricated by the Groton Bridge Company of Groton, New York. It is... More

Liberty Bridge, Spanning Smith Fork Creek on City Road, Liberty, De Kalb County, TN

Liberty Bridge, Spanning Smith Fork Creek on City Road, Liberty, De Ka...

Significance: The Liberty Bridge is a representative example of the Warren pony truss and of the work of the Nashville Bridge Company. It is also a contributing structure in the Liberty Historic District as th... More

Liberty Bridge, Spanning Smith Fork Creek on City Road, Liberty, De Kalb County, TN

Liberty Bridge, Spanning Smith Fork Creek on City Road, Liberty, De Ka...

Significance: The Liberty Bridge is a representative example of the Warren pony truss and of the work of the Nashville Bridge Company. It is also a contributing structure in the Liberty Historic District as th... More

Grassmere Road Bridge, Spanning Pinnebog River, Caseville, Huron County, MI

Grassmere Road Bridge, Spanning Pinnebog River, Caseville, Huron Count...

Significance: With a total bridge length of 21.9m (72'), it is an unusual for a Pratt Pony Truss bridge to be this long. Survey number: HAER MI-85

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road, Tekonsha, Calhoun County, MI

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road...

Significance: The 20 Mile Road Bridge is a large and early example of a riveted pony truss structure with no pinned connections. It is all the more unusual for its Pratt rather than Warren truss design because... More

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road, Tekonsha, Calhoun County, MI

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road...

Significance: The 20 Mile Road Bridge is a large and early example of a riveted pony truss structure with no pinned connections. It is all the more unusual for its Pratt rather than Warren truss design because... More

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road, Tekonsha, Calhoun County, MI

Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road...

Significance: The 20 Mile Road Bridge is a large and early example of a riveted pony truss structure with no pinned connections. It is all the more unusual for its Pratt rather than Warren truss design because... More

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson County, KS

Meriden Rock Creek Bridge, Spanning Rock Creek, Meriden, Jefferson Cou...

Significance: Wrought iron bowstring arch. Survey number: HAER KS-2 Building/structure dates: ca. 1870- ca. 1879 Initial Construction

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Address changed from "Spanning the Flat River at Burroughs Drive, Lowell vic., Kent County, Michigan" to "Spanning Looking Glass river on Portland Riverwalk, Portland, Ionia County, Michigan" because the bridge... More

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Burroughs Street Bridge, Spanning Flat River, Lowell, Kent County, MI

Address changed from "Spanning the Flat River at Burroughs Drive, Lowell vic., Kent County, Michigan" to "Spanning Looking Glass river on Portland Riverwalk, Portland, Ionia County, Michigan" because the bridge... More

Burt Road Bridge, Spanning east fork of west branch of St. Joseph of Maumee River, Hillsdale, Hillsdale County, MI

Burt Road Bridge, Spanning east fork of west branch of St. Joseph of M...

Significance: The Burt Road Bridge is the only known surviving example of a Michigan bridge built by the Ohio Bridge Company of Toledo, Ohio. This firm was one of many short lived bridge companies that operate... More

Beachside Avenue Bridge, Westport, Fairfield County, CT

Beachside Avenue Bridge, Westport, Fairfield County, CT

Significance: Primarily one of local significance. This bridge is a Warren-Pony Truss and is one of several in the area of Fairfield County. Survey number: HAER CT-5 Building/structure dates: 1891 Initial Co... More

Hagerstown Road Bridge, Spanning Little Cotoctin Creek at Old Hagerstown Road, Middletown, Frederick County, MD

Hagerstown Road Bridge, Spanning Little Cotoctin Creek at Old Hagersto...

Significance: The Hagerstown Road Bridge is one of 26 metal truss bridges remaining in Frederick County. In 1978, there were approximately 40, but increased traffic has led to removal of many bridges. The bri... More

Mitchell-Griggs Road Bridge, Spannning Caney Fork on Mitchell-Griggs Road, Dixon, Webster County, KY

Mitchell-Griggs Road Bridge, Spannning Caney Fork on Mitchell-Griggs R...

Significance: The Mitchell-Griggs Road Bridge is an early riveted Warren pony truss, built on a slight skew. Survey number: HAER KY-6 Building/structure dates: 1925 Initial Construction Building/structure da... More

Belleville Road Bridge, Spanning Belleville Lake, Belleville, Wayne County, MI

Belleville Road Bridge, Spanning Belleville Lake, Belleville, Wayne Co...

Address changed from "Spanning Belleville Lake, Belleville, Wayne County, Michigan" to "Spanning the Flat River at Burroughs Drive, Belleville, Wayne County, Michigan," because the bridge was moved in 1995. It ... More

Petrieville Road Bridge, Spanning Grand River, Petrieville, Eaton County, MI

Petrieville Road Bridge, Spanning Grand River, Petrieville, Eaton Coun...

Significance: The Petrieville Road Bridge is one of two remaining multi-span, riveted connection, Warren pony truss bridges in Michigan. Survey number: HAER MI-14

Beaver Dam Road Bridge, Spanning Rock River, on Beaver Dam Road, Addison, Washington County, WI

Beaver Dam Road Bridge, Spanning Rock River, on Beaver Dam Road, Addis...

Significance: The Beaver Dam Road Bridge is a representative example of a Wisconsin bedstead truss highway bridge. It is identical to a bedstead truss in Allentown, Wisconsin, built by the Milwaukee Bridge and... More

McGilvray Road Bridge No. 3, Van Loon Wildlife Area, La Crosse, La Crosse County, WI

McGilvray Road Bridge No. 3, Van Loon Wildlife Area, La Crosse, La Cro...

See HAER WI-22 for additional documentation. Significance: In 1897, Charles M. Horton of Minnesota received a patent for an improvement on trusses and bridges. According to Horton, riveted and bolted connectio... More

McGilvray Road Bridge No. 3, Van Loon Wildlife Area, La Crosse, La Crosse County, WI

McGilvray Road Bridge No. 3, Van Loon Wildlife Area, La Crosse, La Cro...

See HAER WI-22 for additional documentation. Significance: In 1897, Charles M. Horton of Minnesota received a patent for an improvement on trusses and bridges. According to Horton, riveted and bolted connectio... More

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 550 West (Vanada Road), Newburgh, Warrick County, IN

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 5...

Significance: This bridge is an example of a pinned Pratt pony truss founded on caissons with one steel I-beam approach span at each end of the truss. This bridge is of significance because of the caisson foun... More

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 550 West (Vanada Road), Newburgh, Warrick County, IN

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 5...

Significance: This bridge is an example of a pinned Pratt pony truss founded on caissons with one steel I-beam approach span at each end of the truss. This bridge is of significance because of the caisson foun... More

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 550 West (Vanada Road), Newburgh, Warrick County, IN

Warrick County Bridge No. 266, Spanning Cypress Creek at County Road 5...

Significance: This bridge is an example of a pinned Pratt pony truss founded on caissons with one steel I-beam approach span at each end of the truss. This bridge is of significance because of the caisson foun... More

Suger Creek Bridge, Spanning Suger Creek, Hopkinsville, Christian County, KY

Suger Creek Bridge, Spanning Suger Creek, Hopkinsville, Christian Coun...

Significance: Oldest dated bedpost pony truss in Kentucky. The only example in the State built by the Groton Bridge Company of New York. Survey number: HAER KY-7 Building/structure dates: 1894 Initial Construction

Laramie River Bridge, County Road 740, Bosler, Albany County, WY

Laramie River Bridge, County Road 740, Bosler, Albany County, WY

Significance: This bridge is distinguished somewhat as the only two span Pratt Half Hip still in use in the State. It is one of the best examples of a relatively uncommon truss configuration. Survey number: H... More

Mc Donald truss bridges in Galston Gorge NSW, 1894-1909 (7457718986)

Mc Donald truss bridges in Galston Gorge NSW, 1894-1909 (7457718986)

This image depicts the McDonald-type truss bridges built in Galston Gorge in 1893. The bridges were completed in 1894 and served as a crossing between Galston and Hornsby Heights. The bridge in the foreground ... More

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhoun County, MI

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhou...

Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhoun County, MI

Fourteen Mile Road Bridge, Spanning St. Joseph River, Tekonsha, Calhou...

Public domain photograph of attic, house frame, free to use, no copyright restrictions image - Picryl description

Stono River Bridge, Spanning Stono River between James & Johns Islands, Charleston, Charleston County, SC

Stono River Bridge, Spanning Stono River between James & Johns Islands...

Significance: The Stono River Bridge is identified as "Charleston 3) in the South Carolina Department of Transportation's Metal Truss Highway Bridge Inventory. The bridge is noteworthy in that it represents th... More

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Saginaw County, MI

Hemlock Road Bridge, Spanning north branch of Bad River, Brant, Sagina...

Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.

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