Revetment work on the Missouri River, the mat, Cambridge, Mo.
Picryl description: Public domain image of field, irrigation, agriculture, water, free to use, no copyright restrictions.
Dentville Road Bridge, Spanning Hiawassee River on Dentville Road, Ben...
Significance: The bridge is a representative example of both the through Parker and Pratt trusses. It is also significant due to its local historical associations and its association with the Joliet Bridge and ... More
Erie Railway, Diverging French Creek Bridges, 2.7 miles Southeast of U...
Survey number: HAER PA-27 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description
Dentville Road Bridge, Spanning Hiawassee River on Dentville Road, Ben...
Significance: The bridge is a representative example of both the through Parker and Pratt trusses. It is also significant due to its local historical associations and its association with the Joliet Bridge and ... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
Promenade Street Bridge, Spanning Woonasquatucket & Moshassuck Rivers,...
Significance: The bridge is historically significant as part of the station and East Side Tunnel viaduct which contributed to the regional rail transportation network. Unique construction techniques make the s... More
Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...
Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More
Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...
Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More
Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...
Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More
Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...
Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More
Memorial Avenue Bridge, Spanning Lycoming Creek, Williamsport, Lycomin...
Significance: The Memorial Avenue Bridge is significant for its architectural and engineering features. Important original items that contribute to the bridge's integrity are the plaque, the latticed sidewalk ... More
Boston & Providence Railroad, Canton Viaduct, Neponset Street at East ...
Significance: The Canton Viaduct is a granite structure 615 feet in length, 22 feet in width, and 70 feet above the surface of the Neponset River's East Branch. The viaduct was the principal structure on the B... More
Tifton Bridge, U.S. Route 82/State Route 50 over Seaboard Coastline Ra...
Significance: The Tifton Bridge is one of 10 camelback bridges identified in the state, only 7 of which are pin-connected, and only 2 of which are in the southern portion of the state. The camelback truss of t... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
Central Railroad of New Jersey, Newark Bay Lift Bridge, Spanning Newar...
Significance: The Newark Bay Bridge was constructed near the end of J.A.L. Waddell's career. He was an early proponent of the vertical lift bridge, designing and building his first in 1892. Waddell's landmark... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
York Bridge, Federal Aid Secondary Route 280, Helena, Lewis and Clark ...
Significance: As a pin-connected Pennsylvania through truss structure, the bridge is not particularly significant for structural or engineering reasons. It is however, historically associated with the Helena Po... More
Boston & Maine Railroad, Northampton Lattice Truss Bridge, Northampton...
Significance: This structure is an early example of an all-riveted metal lattice truss built for railroad use. The form of the riveted lattice truss reduced deflection under heavy moving loads and, apparently,... More
Boston & Maine Railroad, Northampton Lattice Truss Bridge, Northampton...
Significance: This structure is an early example of an all-riveted metal lattice truss built for railroad use. The form of the riveted lattice truss reduced deflection under heavy moving loads and, apparently,... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Congress Street Bascule Bridge, Spanning Fort Point Channel at Congres...
Significance: The Congress Street Bridge, built in 1930, is a trunnion bascule bridge and the most recent of the five movable-truss bridges spanning the Fort Point Channel. It replaced a steam operated swing d... More
Curry Creek Bridge, Spanning Curry Creek at State Route 15, Jefferson,...
Significance: Curry Creek Bridge represents the solid concrete arch bridge type. One of forty-six concrete arch bridges recorded in the state of Georgia and one of thirty-seven identified as a solid concrete a... More
Speicher Bridge, Church Road over Tulpehocken Creek between Penn & Nor...
Significance: Speicher Bridge, a rural iron highway bridge, is a good example from the important mid-19th century era of metal bridge technology. Unprocessed Field note material exists for this structure: FN-7... More
Scotts Bluff Summit Road, Gering, Scotts Bluff County, NE
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Scotts Bluff Summit Road, Gering, Scotts Bluff County, NE
Public domain photo of a monument, historic place, free to use, no copyright restrictions image - Picryl description
Scotts Bluff Summit Road, Gering, Scotts Bluff County, NE
Public domain photograph - historical image of Nebraska, United States, free to use, no copyright restrictions image - Picryl description
Chesapeake & Ohio Canal, Lift Lock No. 66, State Route 51, Town Creek,...
Unprocessed Field note material exists for this structure: FN-7 Survey number: HAER MD-30-C
Moore Road Bridge, Spannning North Fork Creek at Moore Road, Unionvill...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Hortense Bridge, Spanning Chalk Creek on State Highway 162, Nathrop (h...
Significance: The bridge is technologically significant as a rare existing example of a very common early bridge, a timber/iron Queenpost truss. It is historically significant as an early span associated with a... More
Roubideau Bridge, Spanning Gunnison River at County Road G50R, Delta, ...
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Roubideau Bridge, Spanning Gunnison River at County Road G50R, Delta, ...
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
Roubideau Bridge, Spanning Gunnison River at County Road G50R, Delta, ...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
West Knight Street Bridge, Spanning Spring Brook (west of Knight Stree...
Significance: The West Knight Street Bridge is one of only two known highway bridges built in Michigan by Canton Bridge Company, Canton, Ohio, one of the nation's leading bridge building firms and a pioneer in ... More
Union Station Viaduct, Spanning Gaspee, Francis, Promenade & Canal Str...
Significance: In the late 19th century the city of Providence began filling in its tidal basin and undertook construction of a new Union Station Complex. A viaduct, utilizing a series of box-girder bridges, wa... More
Union Station Viaduct, Spanning Gaspee, Francis, Promenade & Canal Str...
Significance: In the late 19th century the city of Providence began filling in its tidal basin and undertook construction of a new Union Station Complex. A viaduct, utilizing a series of box-girder bridges, wa... More
Victor Bridge, Spanning Bitterroot River, Victor, Ravalli County, MT
Significance: The bridge is a pin-connected Pratt through truss main span connected by two 20' wood stringer span approaches. It is one of three remaining bridges of its vintage built by O.E. Peppard, a noted a... More
Pacheco Creek Bridge, San Felipe Road ,spanning Pacheco Creek, San Fel...
Significance: The Pacheco Creek Bridge is one of only three extant truss bridges in Santa Clara County and is the sole remaining truss bridge in San Benito County. Representing a type, period and method of con... More
Lake Street Bridge, Spanning Ruddiman Creek at Lake Shore Drive, Muske...
Significance: The Lake Street stone arch vehicular bridge in Muskegon, Michigan, is significant because it is representative of a brief period in the evolution in design of American bridges. Relatively few sto... More
Lake Street Bridge, Spanning Ruddiman Creek at Lake Shore Drive, Muske...
Significance: The Lake Street stone arch vehicular bridge in Muskegon, Michigan, is significant because it is representative of a brief period in the evolution in design of American bridges. Relatively few sto... More
Grove Street Bridge, Grove Street, spanning Railroad tracks, Montclair...
Significance: Constructed of reinforced concrete, the Grove Street Bridge is part of an early twentieth century commuter railroad complex. It was designed and built under the supervision of George J. Ray, chie... More
Northeast Railroad Corridor, Amtrak Route between Pennsylvania/New Jer...
Survey number: HAER NJ-40 Public domain photograph of train tracks, railroad works, free to use, no copyright restrictions image - Picryl description
Buena Vista Ford Bridge, Spanning Round Lick Creek on McClanahan Road,...
Significance: The bridge is significant for its unusually long length for a Pony Pratt truss and for its "fish-bellied" bottom chords. The bridge also derives significance from its association with W.T. Young B... More
Buena Vista Ford Bridge, Spanning Round Lick Creek on McClanahan Road,...
Significance: The bridge is significant for its unusually long length for a Pony Pratt truss and for its "fish-bellied" bottom chords. The bridge also derives significance from its association with W.T. Young B... More
Erie Railway, Bergen Hill Open Cut, Palisade Avenue to Tonnele Avenue,...
Unprocessed Field note material exists for this structure: N1374 Survey number: HAER NJ-22
Erie Railway, Bergen Hill Open Cut, Palisade Avenue to Tonnele Avenue,...
Unprocessed Field note material exists for this structure: N1374 Survey number: HAER NJ-22
Cache Creek Bridge, Spanning Cache Creek, Dam Road vicinity, Clearlake...
Significance: The Cache Creek Bridge is one of two known remaining examples of Clinton bridges in California. It is also the last remaining through truss highway bridge in Lake County. It represents a type (P... More
Cache Creek Bridge, Spanning Cache Creek, Dam Road vicinity, Clearlake...
Significance: The Cache Creek Bridge is one of two known remaining examples of Clinton bridges in California. It is also the last remaining through truss highway bridge in Lake County. It represents a type (P... More
Jefferson County Road 255 Bridge, Spanning Rocky Comfort Creek, Louisv...
Significance: Jefferson County Road 255 Bridge is composed of two steel rivet connected Warren pony trusses with verticals. It measures 470 feet in length and 11.6 feet in width and has a timber deck. This br... More
Roberts Bluff Bridge, .5 mile East of Blackwater, Blackwater, Cooper C...
Significance: The Roberts Bluff Bridge constructed by A.M. Blodgett of Kansas City, Missouri represents a well preserved example of the rapidly disappearing Parker through truss bridge form in the Midwest regio... More
Washington Avenue Bridge, Spanning Missouri Pacific Railroad tracks, M...
Significance: The Washington Avenue Bridge is a single-span, steel Pratt through-truss bridge with a wooden deck and walkway. While the Pratt was an extremely common type, the Washington Avenue Bridge is the o... More
Washington Avenue Bridge, Spanning Missouri Pacific Railroad tracks, M...
Significance: The Washington Avenue Bridge is a single-span, steel Pratt through-truss bridge with a wooden deck and walkway. While the Pratt was an extremely common type, the Washington Avenue Bridge is the o... More
Seaboard Coast Line Railroad Bridge, Spanning Savannah River, Calhoun ...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Smith-McGee Bridge, Georgia Route 181, Hartwell, Hart County, GA
Significance: The Smith-McGee Bridge is a three-span, pin-connected Camelback through truss bridge with approach ramps. It was built in 1922 as a toll bridge across the Savannah River. It was acquired in 1926... More
Falls Bridge, Spanning Schuylkill River, connecting East & West River ...
Significance: The Falls Bridge is a unique and well-preserved example of the Petit through truss design, capable of carrying a roadway on both its upper and lower chords. The upper deck remains incomplete, but... More
Falls Bridge, Spanning Schuylkill River, connecting East & West River ...
Significance: The Falls Bridge is a unique and well-preserved example of the Petit through truss design, capable of carrying a roadway on both its upper and lower chords. The upper deck remains incomplete, but... More
New York, New Haven & Hartford Railroad, Niantic Bridge, Spanning Nian...
Significance: The Niantic Bridge is a through girder bridge and consists of a movable span and four approach spans on stone masonry piers. The movable span is a chain-driven Scherzer rolling lift bascule span ... More
New York, New Haven & Hartford Railroad, Niantic Bridge, Spanning Nian...
Significance: The Niantic Bridge is a through girder bridge and consists of a movable span and four approach spans on stone masonry piers. The movable span is a chain-driven Scherzer rolling lift bascule span ... More
New York, New Haven & Hartford Railroad, Niantic Bridge, Spanning Nian...
Significance: The Niantic Bridge is a through girder bridge and consists of a movable span and four approach spans on stone masonry piers. The movable span is a chain-driven Scherzer rolling lift bascule span ... More
East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Rou...
Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The... More
Keystone Bridge, Spanning South Platte River, Waterton, Jefferson Coun...
Significance: The bridge is a pin connected iron Pratt through truss, manufactured by the Keystone Bridge Company of Pittsburgh, Pennsylvania. It was probably built originally for the Denver, South Park, and Pa... More
Hamilton Street Dam, Lehigh River upstream of Hamilton Street Bridge, ...
Significance: The Hamilton Street Dam is an integral part of the Lehigh Canal, which was of major economic importance in the development of industry in the Lehigh Valley in the nineteenth century. The V-shaped... More
Hamilton Street Dam, Lehigh River upstream of Hamilton Street Bridge, ...
Significance: The Hamilton Street Dam is an integral part of the Lehigh Canal, which was of major economic importance in the development of industry in the Lehigh Valley in the nineteenth century. The V-shaped... More
Rustic Bridge, NPS Route No. 13 spanning Crum Elbow Creek, Hyde Park, ...
Significance: The Rustic Bridge is an example of the Melan arch system of concrete construction, and as such is an example of the reinforced-concrete bridge systems introduced in the U.S. in the late nineteenth... More
Memphis Bridge, Spanning Mississippi River, Memphis, Shelby County, TN
See also HAER NE-2 for additional documentation. Significance: Designated a National Historic Civil Engineering Landmark because it was the third longest railroad bridge in the world at 790' when completed. It... More
Memphis Bridge, Spanning Mississippi River, Memphis, Shelby County, TN
See also HAER NE-2 for additional documentation. Significance: Designated a National Historic Civil Engineering Landmark because it was the third longest railroad bridge in the world at 790' when completed. It... More
Memphis Bridge, Spanning Mississippi River, Memphis, Shelby County, TN
See also HAER NE-2 for additional documentation. Significance: Designated a National Historic Civil Engineering Landmark because it was the third longest railroad bridge in the world at 790' when completed. It... More
Memphis Bridge, Spanning Mississippi River, Memphis, Shelby County, TN
See also HAER NE-2 for additional documentation. Significance: Designated a National Historic Civil Engineering Landmark because it was the third longest railroad bridge in the world at 790' when completed. It... More
College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...
Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More
College Avenue Bridge, Pennsylvania Route 58/ Legislative Route 82 spa...
Significance: The College Avenue Bridge in Greenville, Pennsylvania, is a simple pony truss bridge that spans the Little Shenango River on the northern side of Greenville, providing access to the Shenango Valle... More
Old Steel Bridge, Spanning Flathead River on Steel Bridge Road, Kalisp...
Significance: The Flathead River Bridge was the first large steel bridge constructed in northwestern Montana. As with many other late 19th century bridges, it replaces an earlier ferry operation. When complet... More
Old Steel Bridge, Spanning Flathead River on Steel Bridge Road, Kalisp...
Significance: The Flathead River Bridge was the first large steel bridge constructed in northwestern Montana. As with many other late 19th century bridges, it replaces an earlier ferry operation. When complet... More
Old Steel Bridge, Spanning Flathead River on Steel Bridge Road, Kalisp...
Significance: The Flathead River Bridge was the first large steel bridge constructed in northwestern Montana. As with many other late 19th century bridges, it replaces an earlier ferry operation. When complet... More
Blackwell Bridge, Heardmont Vicinity, County Road 244, Heardmont, Elbe...
Significance: The Blackwell Bridge, a single-span, pin-connected Pratt through truss, is the largest remaining steel truss bridge in Elbert County. It was fabricated and erected by the Austin Brothers Bridge C... More
Blackwell Bridge, Heardmont Vicinity, County Road 244, Heardmont, Elbe...
Significance: The Blackwell Bridge, a single-span, pin-connected Pratt through truss, is the largest remaining steel truss bridge in Elbert County. It was fabricated and erected by the Austin Brothers Bridge C... More
Old Croton Aqueduct, Sing Sing Kill Bridge, Spanning Aqueduct Street &...
Significance: The Old Croton Aqueduct is an outstanding example of 19th century civil engineering and was New York City's first municipal water project. The Sing Sing Kill Bridge, as designed, consists of a lo... More
Gaspee Street Bridge, Gaspee Street at Providence Union Station Viaduc...
Significance: The bridge is historically significant as part of the station viaduct which contributed to the regional transportation network. Unique construction techniques make the structure significant for i... More
Zion-Mount Carmel Highway, Virgin River Bridge, Spanning North Fork of...
Significance: Although partially reconstructed in 1960, the Virgin River Bridge retains its structural integrity. Attractive and well-executed, the bridge is a three-span, 'I' beam structure, which was skillfu... More
Zion-Mount Carmel Highway, Virgin River Bridge, Spanning North Fork of...
Significance: Although partially reconstructed in 1960, the Virgin River Bridge retains its structural integrity. Attractive and well-executed, the bridge is a three-span, 'I' beam structure, which was skillfu... More
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported... More
Vieley Bridge, Spanning North Fork Vermillion River at Township Road 2...
Significance: The Vieley Bridge is one of two iron and steel bowstring arch truss bridges of the Phoenix Ring upper chord design remaining in Livingston County. The bridge possesses significance as an example ... More
U. S. 23 Middle Bridge, Spanning Levisa Fork, Pikeville, Pike County, ...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
U. S. 23 Middle Bridge, Spanning Levisa Fork, Pikeville, Pike County, ...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Weaver Road Bridge, Spanning Paint Rock Creek on Weaver Road (County R...
Public domain photograph of Tennessee, United States, free to use, no copyright restrictions image - Picryl description
Delaware, Lackawanna & Western Railroad & Ferry Terminal, Ferry Slips ...
Significance: Throughout the early decades of the twentieth century, this terminal played a central role in commuter transportation in the metropolitan area. The ferry facilities are significant as an integral... More
Delaware, Lackawanna & Western Railroad & Ferry Terminal, Ferry Slips ...
Significance: Throughout the early decades of the twentieth century, this terminal played a central role in commuter transportation in the metropolitan area. The ferry facilities are significant as an integral... More