Obsidian Creek Bridge, Spanning Obsidian Creek at Indian Creek Campgro...
Significance: Obsidian Creek 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 year... More
Boundary Channel Bridge, Spanning Boundary Channel, Washington, Distri...
Significance: Boundary Channel Bridge is unique among the other bridges erected along the Mount Vernon Memorial Highway. It consists of seven reinforced concrete cantilever girders and two exterior girders of ... More
Davison Freeway from M-10 to Oakland Avenue, Davison Freeway, M-10 to ...
Significance: The Davison Freeway was the first below-grade limited access highway built in Michigan and the first built in a Michigan city. It was one of the first depressed urban freeways in the United State... More
Davison Freeway from M-10 to Oakland Avenue, Davison Freeway, M-10 to ...
Significance: The Davison Freeway was the first below-grade limited access highway built in Michigan and the first built in a Michigan city. It was one of the first depressed urban freeways in the United State... 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
Francis Street Bridge, Beneath Providence Union Station & Viaduct, Pro...
Significance: The bridge is historically significant as part of the station viaduct which contributed to the regional rail transportation network. Unique construction techniques make the structure significant ... More
Francis Street Bridge, Beneath Providence Union Station & Viaduct, Pro...
Significance: The bridge is historically significant as part of the station viaduct which contributed to the regional rail transportation network. Unique construction techniques make the structure significant ... More
Long-Allen Bridge, Texas Street Bridge, Spanning the Red River on US 8...
Significance: The Long-Allen Bridge is significant as the first vehicular and pedestrian bridge crossing the Red River in Shreveport. Bridge construction began in September of 1931 and the bridge was formally o... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...
Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More
Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...
Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More
San Roque Canyon Bridge, State Highway 192, Santa Barbara, Santa Barba...
Significance: San Roque Canyon Bridge is significant because of the commitment to concrete prevalent in California, the plate girder arch, as a type, is relatively rare. There are only two known in the State a... More
San Roque Canyon Bridge, State Highway 192, Santa Barbara, Santa Barba...
Significance: San Roque Canyon Bridge is significant because of the commitment to concrete prevalent in California, the plate girder arch, as a type, is relatively rare. There are only two known in the State a... More
Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River...
Significance: This structure occupies the piers of the first railroad bridge to cross the Delaware River at Easton. It is also notable for its fish-belly deck trusses, an unusual variant of the Pratt design. U... More
Adelaide Avenue Pedestrian Bridge, Adelaide Avenue over New Haven Rail...
Significance: Erected in 1903, the Adelaide Avenue Pedestrian Bridge is significant for its association with the Gorham Manufacturing Company, a large ornamental metal manufacturer. This former employee footbr... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
El Capitan Bridge, Spanning Merced River on El Capitan crossover road,...
part of Yosemite National Park Roads and Bridges Recording Project, 1991; see HAER No. CA-117 for overview Significance: El Capital Bridge exemplifies the National Park Service "rustic style" of architecture. ... More
Walpole-Westminster Bridge, Spanning Connecticut River between Walpole...
Significance: The bridge is significant in the history of transportation in the Connecticut River valley and in the evolution of 19th-early 20th century bridge engineering. The bridge, erected in 1910, is locat... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More
Shannock Village, Main Street, North Shannock Road, & West Shannock Ro...
Picryl description: Public domain image of a train station, railroad tracks, railway, 19th-20th century, free to use, no copyright restrictions.
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Chicago & Northwestern Railroad Bridge, Spanning Eagle River, Eagle Ri...
Significance: The Chicago and Northwestern (CNW) Railroad Bridge is a 337', multi-span, riveted, steel, deck plate girder structure that was constructed in 1902. Built by the American Bridge Company, the trestl... More
Inselrue Bridge, Inselrue Avenue spanning Nashua Canal, Belle Isle Par...
Significance: This is one of more than a dozen small bridges built to carry traffic across the lagoons and canals which crisscross Belle Isle, Detroit's major public park in the late nineteenth and early twenti... More
Lamar River Bridge, Spanning Lamar River at Northeast Entrance Road, L...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Boundary Channel Bridge, Spanning Boundary Channel, Washington, Distri...
Significance: Boundary Channel Bridge is unique among the other bridges erected along the Mount Vernon Memorial Highway. It consists of seven reinforced concrete cantilever girders and two exterior girders of ... More
Boundary Channel Bridge, Spanning Boundary Channel, Washington, Distri...
Significance: Boundary Channel Bridge is unique among the other bridges erected along the Mount Vernon Memorial Highway. It consists of seven reinforced concrete cantilever girders and two exterior girders of ... More
Davison Freeway from M-10 to Oakland Avenue, Davison Freeway, M-10 to ...
Significance: The Davison Freeway was the first below-grade limited access highway built in Michigan and the first built in a Michigan city. It was one of the first depressed urban freeways in the United State... More
Exchange Bridge, Spanning Providence River, Providence, Providence Cou...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Exchange Bridge, Spanning Providence River, Providence, Providence Cou...
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Prescott Bridge, Spanning Lamprey River on Prescott Road, Raymond, Roc...
Significance: The bridge is believed to be the sole surviving example of an I-beam through bridge with transverse jack arches extant in New Hampshire. Constructed in 1917. The bridge is the last example of a po... More
Bridalveil Creek Bridge, Spanning Bridalveil Creek on Glacier Point Ro...
Significance: Bridalveil Creek Bridge is one of two "rustic style" park bridges which appear to be of log construction. Actually, the structure has a steel I-beam and reinforced concrete deck, and the logs onl... 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
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
Maple Street Bridge, Spanning New Jersey Transit tracks at Maple Stree...
Significance: The Maple Street Bridge is a contributing resource within the proposed Summit Historic District. The Maple Street Bridge is a component of an early grade separation project executed by the Delawa... More
Gibbon River Bridge No. 1, Spanning Gibbon River at Grand Loop Road, L...
Significance: Gibbon River Bridge I typifies the early design philosophy of the National Park Service, which was to use indigenous materials to harmonize manmade features with their natural surroundings. This ... More
Long-Allen Bridge, Texas Street Bridge, Spanning the Red River on US 8...
Significance: The Long-Allen Bridge is significant as the first vehicular and pedestrian bridge crossing the Red River in Shreveport. Bridge construction began in September of 1931 and the bridge was formally o... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Tayco Street Bridge, Spanning Government Canal at Tayco & Water Street...
Significance: The Tayco Street Bridge is a double leaf, Strauss Underneath Counterweight bascule bridge. It is significant as the only bridge of this type in Menasha. With its symmetrical design and four hous... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...
Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More
Great Smoky Mountains National Park Roads & Bridges, Gatlinburg, Sevie...
Significance: The transportation system of Great Smoky Mountains is representative of NPS park road designs throughout the country. Much of the construction work was undertaken by the Civilian Conservation Cor... More
San Roque Canyon Bridge, State Highway 192, Santa Barbara, Santa Barba...
Significance: San Roque Canyon Bridge is significant because of the commitment to concrete prevalent in California, the plate girder arch, as a type, is relatively rare. There are only two known in the State a... More
Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River...
Significance: This structure occupies the piers of the first railroad bridge to cross the Delaware River at Easton. It is also notable for its fish-belly deck trusses, an unusual variant of the Pratt design. U... More
Adelaide Avenue Pedestrian Bridge, Adelaide Avenue over New Haven Rail...
Significance: Erected in 1903, the Adelaide Avenue Pedestrian Bridge is significant for its association with the Gorham Manufacturing Company, a large ornamental metal manufacturer. This former employee footbr... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Western Maryland Railway, Cumberland Extension, Pearre to North Branch...
Significance: The westward expansion of the Western Maryland Railway, beginning with the Cumberland Extension, was one of the last new mainlines constructed during the U.S. railroads' period of extensive growth... More
Strawberry Mansion Bridge, Spanning Schuylkill River at Strawberry Dri...
Picryl description: Public domain vintage artistic photograph, free to use, no copyright restrictions image.
South Euclid Road Bridge, Spanning Squaconning Creek, Bay City, Bay Co...
Significance: The South Euclid Road Bridge is among the older known surviving examples of steel girder bridges in Michigan, and one of the largest. With an overall length of 148 feet, it ranks among the top tw... More
Great Smoky Mountains National Park Roads & Bridges, Smokemont Bridge,...
Picryl description: Public domain image of a park, trees, outdoors, free to use, no copyright restrictions.
Great Smoky Mountains National Park Roads & Bridges, Little River Road...
Significance: Little River Road is an extremely prominent thoroughfare in Great Smoky Mountains National Park, second only to Newfound Gap Road. The transportation system in this park is representative of NPS ... More
Great Smoky Mountains National Park Roads & Bridges, Little River Road...
Significance: Little River Road is an extremely prominent thoroughfare in Great Smoky Mountains National Park, second only to Newfound Gap Road. The transportation system in this park is representative of NPS ... More
Penobscot Bridge, Spanning Penobscot River at Route 15, Bangor, Penobs...
Significance: This bridge is the last remaining Baltimore (Petit) through-truss bridge in the state. The current structure represents three different phases of construction: Phase 1 - the center span was erec... More
Walpole-Westminster Bridge, Spanning Connecticut River between Walpole...
Significance: The bridge is significant in the history of transportation in the Connecticut River valley and in the evolution of 19th-early 20th century bridge engineering. The bridge, erected in 1910, is locat... More
Walpole-Westminster Bridge, Spanning Connecticut River between Walpole...
Significance: The bridge is significant in the history of transportation in the Connecticut River valley and in the evolution of 19th-early 20th century bridge engineering. The bridge, erected in 1910, is locat... More
Thompson's Bridge, Spanning Brandywine River on Delaware State Route 9...
Significance: Thompson's Bridge is a multiple span, highly ornamental example of a concrete encased steel girder bridge; this type commonly was constructed by the State Highway Department during the period 1925... More
Durham Falls Bridge, Spanning Oyster River at State Route 108, Durham,...
Significance: The bridge is one of many single-span, I-beam bridges utilizing concrete jack arches supported by cut granite abutments still extant in the New Hampshire. Rebuilt from an earlier bridge in 1907, t... More
Durham Falls Bridge, Spanning Oyster River at State Route 108, Durham,...
Significance: The bridge is one of many single-span, I-beam bridges utilizing concrete jack arches supported by cut granite abutments still extant in the New Hampshire. Rebuilt from an earlier bridge in 1907, t... More
Durham Falls Bridge, Spanning Oyster River at State Route 108, Durham,...
Significance: The bridge is one of many single-span, I-beam bridges utilizing concrete jack arches supported by cut granite abutments still extant in the New Hampshire. Rebuilt from an earlier bridge in 1907, t... More
Shannock Village, Main Street, North Shannock Road, & West Shannock Ro...
Public domain photograph - historical image of Rhode Island, United States, free to use, no copyright restrictions image - Picryl description
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Harvard Bridge, Spanning Charles River at Massachusetts Avenue, Boston...
Significance: The Harvard Bridge is located in the Charles River Basin Historic District. Survey number: HAER MA-53 Building/structure dates: 1887- 1891 Initial Construction Building/structure dates: 1898... More
Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD
Significance: The federal section of the Baltimore-Washington Parkway was constructed to provide a dignified entrance to the nation's capital. The parkway also provided a new traffic artery that relieved conge... More
Obsidian Creek Bridge, Spanning Obsidian Creek at Indian Creek Campgro...
Significance: Obsidian Creek 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 year... More
Obsidian Creek Bridge, Spanning Obsidian Creek at Indian Creek Campgro...
Significance: Obsidian Creek 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 year... More
Davison Freeway from M-10 to Oakland Avenue, Davison Freeway, M-10 to ...
Significance: The Davison Freeway was the first below-grade limited access highway built in Michigan and the first built in a Michigan city. It was one of the first depressed urban freeways in the United State... More
Davison Freeway from M-10 to Oakland Avenue, Davison Freeway, M-10 to ...
Significance: The Davison Freeway was the first below-grade limited access highway built in Michigan and the first built in a Michigan city. It was one of the first depressed urban freeways in the United State... 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