Bridge No. 2.4, Spanning Boiling Fork Creek at Railroad Milepost JC-2....
Significance: Railroad bridge built at various times. Survey number: HAER TN-43 Building/structure dates: 1914 Initial Construction Building/structure dates: 1951 Subsequent Work Building/structure dates: c... More
Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHen...
Significance: Glendale Road Bridge is a two-span, steel Pennsylvania (Petit) truss bridge, with sub-struts, constructed in connection with the development of Deep Creek Lake by the Youghiogheny Hydroelectric Co... More
Milk River Bridge, Spanning Milk River approximately one mile north of...
Significance: Constructed at the height of the Montana Homestead Boom (1909-1917), the Milk River Bridge facilitated the transportation of agricultural goods to the Great Northern Railway station at Tampico in ... More
Milk River Bridge, Spanning Milk River approximately one mile north of...
Significance: Constructed at the height of the Montana Homestead Boom (1909-1917), the Milk River Bridge facilitated the transportation of agricultural goods to the Great Northern Railway station at Tampico in ... More
Siuslaw River Bridge, Spanning Siuslaw River, Richardson Road, County ...
Significance: The Siuslaw River Bridge is the oldest extant through truss with riveted connections and one of two steel through truss bridges using the double intersection Warren truss in Oregon. Survey number... More
Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary ...
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequent... More
Coos Bay Bridge, Spanning Coos Bay on Oregon Coast Highway, North Bend...
Significance: The Coos Bay Bridge is historically significant as one of the five Depression-era PWA bridges that completed the Oregon Coast Highway. The completion of these bridges marks the dividing line betw... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Burlington Northern Railroad Bridge, Spanning Willamette River at Rive...
Significance: Willamette River Bridge 5.1 is the south end part of a 4-3/4 mile-long network of railroad bridges, causeways, and cut system linking the mainlines north and south of Portland. The bridge is one ... More
Leavenworth Bridge, Spanning Missouri River, Leavenworth, Leavenworth ...
See also HAER NE-2 for historical report and additional documentation. Significance: The bridge that George Morison designed for Leavenworth represented a synthesis of his previous thirteen bridges over the Mis... More
Coverts Crossing Bridge, Spanning Mahoning River along Township Route ...
Significance: The Coverts Crossing Bridge consists of two bridge segments, as it combines a reused bridge with a new one. It is a significant example of a metal truss bridge because it exhibits transitional te... More
Twenty-first Street Bridge, Spanning Railroad tracks at Twenty-first S...
Significance: The Twenty-First Street Bridge is a 1,272-foot-long through Parker truss and through Pony truss featuring pineapple finials atop its portals. It is a little-altered surviving example of a late 19... More
Twenty-first Street Bridge, Spanning Railroad tracks at Twenty-first S...
Significance: The Twenty-First Street Bridge is a 1,272-foot-long through Parker truss and through Pony truss featuring pineapple finials atop its portals. It is a little-altered surviving example of a late 19... More
Eighteenth Street Bridge, Saint Louis, Independent City, MO
Significance: The Eighteenth Street Bridge is a 1,054-foot-long through-truss and through-plate girder structure with distinctive ornamentation over each truss portal in the form of finials and cresting, and pe... More
Northeast Railroad Corridor, Amtrak Route between New York/Connecticut...
Survey number: HAER CT-11 Public domain photograph of the train tunnel, railroad, train track, free to use, no copyright restrictions image - Picryl description
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
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
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
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
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
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
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
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
Wolf Point Bridge, Spanning Missouri River at State Highway 13, Wolf P...
Significance: The Wolf Point Bridge is the finest remaining example of a Pennsylvania through truss bridge in Montana. Completed in 1930, the four-span bridge is the most massive in the state and retains the l... More
Dunnville Bridge, Spanning Red Cedar River at County Trunk Highway Y, ...
Significance: The Dunnville Bridge is an excellent example of a steel, Warren overhead truss with verticals. It is among the earliest examples of the Wisconsin Highway Department's use of this design; previous... More
Nepesta Bridge, Spanning Arkansas River on County Road 613, Boone, Pue...
Significance: The only roadway truss left in Pueblo County over the Arkansas River after the 1921 flood, the bridge has served as a regionally important crossing on the major east-west artery in southeast Color... More
Hot Springs Bridge, Spanning Bruneau River, Hot Springs Road, Bruneau,...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Hot Springs Bridge, Spanning Bruneau River, Hot Springs Road, Bruneau,...
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Vermont Bridge No. 48, Spanning Winooski River at U.S. Route 2, Waterb...
Significance: The bridge is significant as a representative example of bridges constructed in the early 20th Century. During this time, the use of trusses dominated the bridge industry, replacing the variety o... More
Weaver Road Bridge, Spanning Paint Rock Creek on Weaver Road (County R...
Picryl description: Public domain image of a rural landscape, farmhouse, pasture, farm field, free to use, no copyright restrictions.
Seven Mile Bridge, Linking Florida Keys, Marathon, Monroe County, FL
Significance: At the time the Florida East Coast Railway constructed this bridge it was acclaimed as the longest bridge in the world, an engineering marvel. It was the most costly of all Flagler's bridges in t... More
Wind River Diverson Dam Bridge, Spanning Wind River on County Road No....
Significance: The Wind River Diversion Dam Bridge consists of eight Warren Pony trusses for a length of 655 feet. This is the greatest number of spans for a highway bridge in the State. Survey number: HAER WY... More
Fort Benton Bridge, Spanning Missouri River, Fort Benton, Chouteau Cou...
Significance: Fort Benton has a long history in Montana. It was s fur trading post before the formation of Montana territory. In order to hold the town's trade with the Judith Basin to the east from other compe... More
Abbett Avenue Bridge, Spanning Whippany River at Abbett Avenue, Morris...
Significance: The Abbett Avenue Bridge is a late 19th Century (1896) single span pin connected Pratt pony truss. It is a representative example of 19th Century bridge construction. The bridge was originally c... More
Laroque Bridge, Spanning New Haven River at State Route 116, Bristol, ...
Significance: This bridge is typical of the engineering practice of the early 20th Century. By that time, two basic truss designs Warren and Pratt had replaced the variety of types which characterized the 19th... More
Manzanola Bridge, State Highway 207, spanning Arkansas River, Manzanol...
Significance: The bridge has functioned as a locally important crossing over the two greatest rivers in Colorado: the Colorado and the Arkansas. It is one of the earliest rigid-connected vehicular trusses in Co... More
Missouri River Bridge, Spanning Missouri River on County Road 200, Hul...
Significance: The Missouri River Bridge is unique for its type in Wyoming. This eight-panel, Pratt Pony truss bridge lacks inclined end posts. It is an interesting variation for a vehicular bridge in the Stat... More
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
One Hundred Thirty-Third Avenue Bridge, Spanning Rabbit River, Hopkins...
Significance: The 133rd Avenue Bridge is a four-panel half-hip pin-connected Pratt steel truss. The bridge has withstood its environment for many years, having been built in 1897. It has been considered eligi... More
Bonner's Ferry Bridge, Spanning Kootenai River, Bonners Ferry, Boundar...
Picryl description: Public domain image of a bridge over a water stream, free to use, no copyright restrictions.
Roundup Bridge, Spanning Musselshell River, Roundup, Musselshell Count...
Survey number: HAER MT-25 Building/structure dates: 1894 Building/structure dates: 1911
West End-North Side Bridge, Spanning Ohio River, approximately 1 mile ...
Photographs cover approach spans only; Ohio River span not shown. Significance: After two decades of agitation by the local business community, the West End-North Side Bridge was completed in 1932 by the Americ... More
Big Piney Creek Bridge, Spanning Big Piney Creek at State Highway 123,...
Significance: The bridge over Big Piney Creek provides an interesting example of a State Highway Department bridge design of the early 1930s executed with limited funds; although there is no apparent loss of qu... More
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
Benson Bridge, Spanning Cutler Reservoir, Benson, Cache County, UT
Significance: The Benson Bridge is a steel through Pratt truss bridge. It is one of only 53 remaining truss bridges in Utah and one of only three remaining pin connected truss bridges left in Utah. It is also... More
Hobbs Bridge, Spanning Elk River on Curtis Road (A494), Coldwater, Lin...
Significance: The bridge is the only known surviving Baltimore Petit truss bridge in Tennessee. Survey number: HAER TN-23 Building/structure dates: 1891 Initial Construction
Jones Road Bridge, Spanning Grand River, Eagle, Clinton County, MI
Significance: The bridge is part of Clinton County's local road system which primarily serves existing agricultural development, rural residential uses, and related traffic. The bridge is a steel Baltimore thr... More
Cuttingsville Bridge, Spanning Mill River at State Route 103, Shrewsbu...
Significance: The bridge is significant as a representative example of the bridges built following the flood of 1927, in which over 1250 of Vermont's bridges were destroyed. The flood was a major episode in Ve... More
Nebraska City Bridge, Spanning Missouri River near Highway 2 between N...
Report also released under the alternate title, "Behemoths: The Great River Bridges of George S. Morison" Significance: With his long-span railroad bridges over the navigable Midwestern rivers, civil engineer G... More
Nebraska City Bridge, Spanning Missouri River near Highway 2 between N...
Report also released under the alternate title, "Behemoths: The Great River Bridges of George S. Morison" Significance: With his long-span railroad bridges over the navigable Midwestern rivers, civil engineer G... More
New York, New Haven & Hartford Railroad, Automatic Signalization Syste...
Significance: This system is one of the few automatic semaphore signal installations still in use on a major railroad in the United States. It was a major element in the first large-scale application of high-v... More
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
Bedford County Bridge No. 4, Township Route 655 spanning Yellow Creek,...
Significance: This steel-constructed Pratt through truss is a typical metal truss span of the late nineteenth century. It is, however, one of the region's few surviving Keystone Bridge Company spans built for ... More
Duck Creek Bridge, Spanning Yellowstone River on Route 329, Southwest ...
Significance: The bridge is significant for its associations with the homestead boom in Montana. The bridge is an important representative example in Montana of the riveted Warren through truss. The bridge is a... More
Paragon Bridge, Spanning Yellowstone River, Miles City, Custer County,...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
Wolf Creek Bridge, Spanning Missouri River, Craig, Lewis and Clark Cou...
Significance: Located on the Recreation Road south of Craig, it was erected in 1933 by W.P. Roscoe Co. of Billings. The bridge was the first continuous steel truss bridge built in Montana. Following its constru... More
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
Gardner River Bridge, Spanning Gardner River at North Entrance Road, L...
Picryl description: Public domain image of a bridge, railroad structure, train viaduct, free to use, no copyright restrictions.
Heath Bridge, Bloomberg road over Chippewa River, Exeland, Sawyer Coun...
Significance: Crossing the Chippewa River in southern Sawyer County, Wisconsin, the Heath Bridge is a steel, riveted, two-span, overhead, Pratt truss highway bridge. Constructed in 1914, it is one of the first... More
Indian Leap Pedestrian Bridge, Norwich, New London County, CT
Significance: Relatively long pedestrian bridge using structural steel for particular era (1904). Survey number: HAER CT-4 Building/structure dates: 1904 Initial Construction
Parker Bridge, Spanning Verdigris River 1.5 miles Southeast of Coffeyv...
Significance: The combination bowstring/camelback bridge is a riveted steel high through truss and is one of only five camelbacks known to exist in the state. The bowstring pony truss is the only identified ex... More
Parker Bridge, Spanning Verdigris River 1.5 miles Southeast of Coffeyv...
Significance: The combination bowstring/camelback bridge is a riveted steel high through truss and is one of only five camelbacks known to exist in the state. The bowstring pony truss is the only identified ex... More
Saxton Bridge, Spanning Gunnison River on Delta County Road 650R, Delt...
Public domain photograph - historical image of Colorado, United States, free to use, no copyright restrictions image - Picryl description
Bridge No. 2.4, Spanning Boiling Fork Creek at Railroad Milepost JC-2....
Significance: Railroad bridge built at various times. Survey number: HAER TN-43 Building/structure dates: 1914 Initial Construction Building/structure dates: 1951 Subsequent Work Building/structure dates: c... More
Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHen...
Significance: Glendale Road Bridge is a two-span, steel Pennsylvania (Petit) truss bridge, with sub-struts, constructed in connection with the development of Deep Creek Lake by the Youghiogheny Hydroelectric Co... More
North Fork Bridge, Spans North Fork of White River at State Highway 5,...
Significance: Designed by the Arkansas State Highway Department as a result of the unexpected cost involved in the erection of a proposed concrete deck arch bridge, the North Fork bridge was an early example of... More
Orange Street Bridge, Spanning Clark Fork River at Orange Street, Miss...
Significance: The bridge is one of only 14 steel deck truss bridges designed and constructed by the Montana Department of Transportation between 1920-1952. It comprised a standard design developed by the depart... More
Northern Avenue Swing Bridge, Spanning Fort Point Channel at boundary ...
Significance: The Northern Avenue Swing Bridge, built in 1908, is one of only three surviving swing bridges built by the city of Boston in the late 19th and early 20th century. Today, still operated infrequent... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More