General Dynamics Corporation Shipyard, Wellman-Seaver Crane, 97 Howard...
Significance: Erected in 1901, Structure No. 30S, the Wellman-Seaver Folding Gantry Crane, or Crane S-1, is significant as the oldest and longest-operating crane in the Quincy-Fore River Shipyard. Located on P... More
Snowden Bridge, Spanning Missouri River, Nohly, Richland County, MT
Survey number: HAER MT-27 Building/structure dates: 1913 Initial Construction Building/structure dates: 1925 Subsequent Work
Snowden Bridge, Spanning Missouri River, Nohly, Richland County, MT
Survey number: HAER MT-27 Building/structure dates: 1913 Initial Construction Building/structure dates: 1925 Subsequent Work
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
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
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
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
Southern Pacific Railroad Shasta Route, Bridge No. 210.52, Milepost 21...
Significance: The Southern Pacific Railroad Shasta Route, built as the California and Oregon Railroad and the Central Pacific Railroad between Roseville, California and Portland, Oregon was the first thrust nor... More
Merritt Parkway, Lake Avenue Bridge, Spanning Merritt Parkway at 4.71 ...
Significance: The bridges of the Merritt Parkway were predominately inspired by the Art Deco and Art Moderne architectural styles of the 1930s. Experimental forming techniques were employed to create the ornam... More
Merritt Parkway, Lake Avenue Bridge, Spanning Merritt Parkway at 4.71 ...
Significance: The bridges of the Merritt Parkway were predominately inspired by the Art Deco and Art Moderne architectural styles of the 1930s. Experimental forming techniques were employed to create the ornam... More
Fort Madison Bridge, Spanning Mississippi River at U.S. Highway 61, Fo...
Significance: This bridge is a major river span and had, at the time of its construction, the longest and heaviest electrified swing span on the Mississippi River. The bridge superstructure was built by Americ... More
Fort Madison Bridge, Spanning Mississippi River at U.S. Highway 61, Fo...
Significance: This bridge is a major river span and had, at the time of its construction, the longest and heaviest electrified swing span on the Mississippi River. The bridge superstructure was built by Americ... 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
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
St. Louis Avenue Viaduct, Spanning Kansas City Terminal Railroad at Be...
Significance: The St. Louis Avenue Viaduct is the oldest of only nine known extant skewed Pratt truss bridges, a rather uncommon bridge form, in Missouri. Furthermore, its fifty-foot width is unusual for a bri... More
Augustine Bridge, Brandywine River,Augustine Cutoff, Wilmington, New C...
Significance: Wrought iron, pin-connected, Pratt-type truss superstructure mounted on granite masonry piers; originally served as bridge for the B&O Railroad. Survey number: HAER DE-20 Building/structure date... More
Augustine Bridge, Brandywine River,Augustine Cutoff, Wilmington, New C...
Significance: Wrought iron, pin-connected, Pratt-type truss superstructure mounted on granite masonry piers; originally served as bridge for the B&O Railroad. Survey number: HAER DE-20 Building/structure date... More
Augustine Bridge, Brandywine River,Augustine Cutoff, Wilmington, New C...
Significance: Wrought iron, pin-connected, Pratt-type truss superstructure mounted on granite masonry piers; originally served as bridge for the B&O Railroad. Survey number: HAER DE-20 Building/structure date... More
Southern Railway Company, Spencer Shops, Salisbury Avenue between Thir...
Significance: The Spencer Shops served as the largest maintenance and repair facility in the Southern Railway Company system. The extant structures provide important indications of the requirements of large sc... More
Southern Railway Company, Spencer Shops, Salisbury Avenue between Thir...
Significance: The Spencer Shops served as the largest maintenance and repair facility in the Southern Railway Company system. The extant structures provide important indications of the requirements of large sc... More
Yeakle Mill Bridge, State Route 3026 (Mill Road) spanning Little Cove ...
Significance: The Yeakle Mill Bridge is one of a few surviving Pratt pony truss structures that once were common throughout South Central Pennsylvania. Designed by the Pittsburgh Bridge Company and erected thr... More
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
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
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
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
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
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
Charleroi-Monessen Bridge, Spanning Monongahela River at State Route 2...
Significance: It is significant as a rare surviving example of a long, multiple-span metal truss bridge. Built as a toll bridge to carry vehicular, pedestrian, and trolley traffic across the Monongahela River, ... More
Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b... More
U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...
Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... More
U.S. Steel Edgar Thomson Works, Blast Furnace Plant, Along Monongahela...
Survey number: HAER PA-384-A Building/structure dates: 1898 Initial Construction Building/structure dates: 1916 Subsequent Work Building/structure dates: 1927 Subsequent Work Building/structure dates: 1941-... 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
Center Street Bridge, Spanning Conneat Creek, Conneautville, Crawford ...
Significance: Center Street Bridge is an unusually ornate example of a late-nineteenth century, pin-connected Pratt through truss roadway bridge. It is one of four surviving Crawford County bridges built by th... More
Center Street Bridge, Spanning Conneat Creek, Conneautville, Crawford ...
Significance: Center Street Bridge is an unusually ornate example of a late-nineteenth century, pin-connected Pratt through truss roadway bridge. It is one of four surviving Crawford County bridges built by th... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Upper Mississippi River 9-Foot Channel, Lock & Dam No. 6, Trempealeau,...
Significance: The Upper Mississippi River Lock and Dam Project represents one of the largest and most ambitious of such undertakings. With roots in the Progressive Era, the project was adopted by New Deal prop... More
Santa Fe Railroad, llinois & Michigan Canal Bridge, Crossing I&M Canal...
Significance: Built in 1935, this railroad bridge is the only subdivided, double-intersection Warren through Truss bridge built in the Upper Illinois Valley. Survey number: HAER IL-59 Building/structure dates... More
Napa River Railroad Bridge, Spanning Napa River, east of Soscol Avenue...
Significance: The Napa Valley Railroad Bridge served as an integral element of the Napa Valley Railroad. The importance of the railroad to the development of both the community of Napa and the surrounding regi... More
Napa River Railroad Bridge, Spanning Napa River, east of Soscol Avenue...
Significance: The Napa Valley Railroad Bridge served as an integral element of the Napa Valley Railroad. The importance of the railroad to the development of both the community of Napa and the surrounding regi... More
State Bridge, Spanning Rio Grande River, Del Norte, Rio Grande County,...
Survey number: HAER CO-36 Building/structure dates: 1908 Initial Construction Building/structure dates: ca. 1928 Subsequent Work
State Bridge, Spanning Rio Grande River, Del Norte, Rio Grande County,...
Survey number: HAER CO-36 Building/structure dates: 1908 Initial Construction Building/structure dates: ca. 1928 Subsequent Work
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
Chicago River Bascule Bridge, Clarke Street, Spanning Chicago River at...
Significance: The development of the Chicago trunnoin bascule bridge occurred during the first three decades of the twentieth century. Despite the controversy over patent infringement Joseph E. Strauss charg... More
Chicago River Bascule Bridge, Clarke Street, Spanning Chicago River at...
Significance: The development of the Chicago trunnoin bascule bridge occurred during the first three decades of the twentieth century. Despite the controversy over patent infringement Joseph E. Strauss charg... More
Liberty Memorial Bridge, Spanning Missouri River at I-94, Bismarck, Bu...
Significance: The Liberty Memorial Bridge is a three-span, Warren-Turner through truss bridge, a variation of the Warren through truss designed by C.A.P. Turner. This was the first highway bridge over the Miss... More
Chicago & Northwestern Railroad Viaduct, Spanning Des Moines River at ...
Significance: This bridge is one of the last projects of noted bridge engineer George Morison, who died two years after the structure was built. The bridge was the longest and heaviest viaduct of its time, and... More
Gault Bridge, Spanning Deer Creek at South Pine Street, Nevada City, N...
Significance: The Gault Bridge has been determined eligible for the National Register of Historic Places under criterion c for its significance in the history of bridge technology in California (Caltrans Bridge... More
Fryer's Ford Bridge, Spanning East Fork of Point Remove Creek at Fryer...
Significance: Fryer's Ford Bridge is the oldest in-service bridge—and the second-oldest bridge of any type—in the State of Arkansas. It is an intact example of a pin-connected Pratt through truss, a type that ... More
Fryer's Ford Bridge, Spanning East Fork of Point Remove Creek at Fryer...
Significance: Fryer's Ford Bridge is the oldest in-service bridge—and the second-oldest bridge of any type—in the State of Arkansas. It is an intact example of a pin-connected Pratt through truss, a type that ... More
Chester & Delaware River Railroad, Chester Creek Bridge, Spanning Ches...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of moveable railroad structures in this state. This bridge is remarkably low, about a foot above water at high t... More
Water Street Bridge, County Route 119/26, over Guyandotte River, Logan...
Significance: The Water Street Bridge is significant for its association with the civil and economic development of the city of Logan, West Virginia. Since its construction in 1934 the bridge has been a primar... More
South Street Bridge, Spans Pennsylvania Avenue, Wilkes-Barre Boulevard...
Significance: The South Street Bridge is an unusual, long span metropolitan bridge comprising thirteen concrete spans and two steel truss spans. While the concrete spans are representative, the trusses are unu... More
South Street Bridge, Spans Pennsylvania Avenue, Wilkes-Barre Boulevard...
Significance: The South Street Bridge is an unusual, long span metropolitan bridge comprising thirteen concrete spans and two steel truss spans. While the concrete spans are representative, the trusses are unu... More
South Street Bridge, Spans Pennsylvania Avenue, Wilkes-Barre Boulevard...
Significance: The South Street Bridge is an unusual, long span metropolitan bridge comprising thirteen concrete spans and two steel truss spans. While the concrete spans are representative, the trusses are unu... More
South Street Bridge, Spans Pennsylvania Avenue, Wilkes-Barre Boulevard...
Significance: The South Street Bridge is an unusual, long span metropolitan bridge comprising thirteen concrete spans and two steel truss spans. While the concrete spans are representative, the trusses are unu... 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
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
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
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
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
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
Stanislaus River Bridge, Atchison, Topeka & Santa Fe Railway at Stanis...
Significance: The Stanislaus River Bridge, also known as Bridge Number A-1096.719, determined eligible for inclusion in the National Register of Historic Places in 1994, represents a rare extant truss bridge in... More
Blue Water Bridge Plaza, 410 Elmwood Street, Port Huron, St. Clair Cou...
Significance: The bridge and plaza were completed in 1938. They are reflections of Depression-era engineering and architecture. The plaza was designed and built by George L. Harvey and Norman B. Forbes. The ... More
Blue Water Bridge Plaza, 410 Elmwood Street, Port Huron, St. Clair Cou...
Significance: The bridge and plaza were completed in 1938. They are reflections of Depression-era engineering and architecture. The plaza was designed and built by George L. Harvey and Norman B. Forbes. The ... More
Blue Water Bridge Plaza, 410 Elmwood Street, Port Huron, St. Clair Cou...
Significance: The bridge and plaza were completed in 1938. They are reflections of Depression-era engineering and architecture. The plaza was designed and built by George L. Harvey and Norman B. Forbes. The ... More
Blue Water Bridge Plaza, 410 Elmwood Street, Port Huron, St. Clair Cou...
Significance: The bridge and plaza were completed in 1938. They are reflections of Depression-era engineering and architecture. The plaza was designed and built by George L. Harvey and Norman B. Forbes. The ... More
Blue Water Bridge Plaza, 410 Elmwood Street, Port Huron, St. Clair Cou...
Significance: The bridge and plaza were completed in 1938. They are reflections of Depression-era engineering and architecture. The plaza was designed and built by George L. Harvey and Norman B. Forbes. The ... More
Three Sisters Bridges, Sixth Street Bridge, Spanning Allegheny River a...
Significance: The Three Sisters Bridges represent an adaptive engineering design response to political and technical concerns. County engineers successfully maneuvered around federally-mandated clearances, aest... More
Three Sisters Bridges, Sixth Street Bridge, Spanning Allegheny River a...
Significance: The Three Sisters Bridges represent an adaptive engineering design response to political and technical concerns. County engineers successfully maneuvered around federally-mandated clearances, aest... More
Three Sisters Bridges, Sixth Street Bridge, Spanning Allegheny River a...
Significance: The Three Sisters Bridges represent an adaptive engineering design response to political and technical concerns. County engineers successfully maneuvered around federally-mandated clearances, aest... More
New York, New Haven & Hartford Railroad, Groton Bridge, Spanning Thame...
Significance: The Groton Bridge is a Strauss heel trunnion bascule bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railroad, and as a... More
New York, New Haven & Hartford Railroad, Groton Bridge, Spanning Thame...
Significance: The Groton Bridge is a Strauss heel trunnion bascule bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railroad, and as a... More
Honey Run Bridge, Spanning Butte Creek, bypassed section of Honey Run ...
modified Pratt truss (4); 230' long; 3 span, combined wood & iron Significance: The Honey Run Bridge is the best preserved of four surviving examples of Pratt-type wood covered bridges in the United States. Th... More
Honey Run Bridge, Spanning Butte Creek, bypassed section of Honey Run ...
modified Pratt truss (4); 230' long; 3 span, combined wood & iron Significance: The Honey Run Bridge is the best preserved of four surviving examples of Pratt-type wood covered bridges in the United States. Th... More
Honey Run Bridge, Spanning Butte Creek, bypassed section of Honey Run ...
modified Pratt truss (4); 230' long; 3 span, combined wood & iron Significance: The Honey Run Bridge is the best preserved of four surviving examples of Pratt-type wood covered bridges in the United States. Th... More
Coraopolis Bridge, Spanning Ohio River back channel at Ferree Street &...
See also HAER PA-490 for related documentation. Includes drawings, photographs & written data. Significance: The Coraopolis Bridge comprises two Pennsylvania through truss spans designed by Theodore Cooper and ... More
Coraopolis Bridge, Spanning Ohio River back channel at Ferree Street &...
See also HAER PA-490 for related documentation. Includes drawings, photographs & written data. Significance: The Coraopolis Bridge comprises two Pennsylvania through truss spans designed by Theodore Cooper and ... More
Coraopolis Bridge, Spanning Ohio River back channel at Ferree Street &...
See also HAER PA-490 for related documentation. Includes drawings, photographs & written data. Significance: The Coraopolis Bridge comprises two Pennsylvania through truss spans designed by Theodore Cooper and ... More
U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...
See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More
U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...
See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More
U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela Rive...
See also HAER PA-115 for additional documentation. Includes written data (pages 55 through 158). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integ... More
Pennsylvania Railroad, West Philadelphia Elevated, Parallel to Schuylk...
See also HAER PA-71 for related documentation. Includes photographs. Significance: The West Philadelphia Elevated, part of the Pennsylvania Railroad's program to separate passenger and freight traffic, includes... More
Pennsylvania Railroad, West Philadelphia Elevated, Parallel to Schuylk...
See also HAER PA-71 for related documentation. Includes photographs. Significance: The West Philadelphia Elevated, part of the Pennsylvania Railroad's program to separate passenger and freight traffic, includes... More
North Side Point Bridge, Spanning Allegheny River at Point of Pittsbur...
See also HAER PA-3 for additional documentation. Includes written data. Significance: The Manchester Bridge replaced the old wooden Union Bridge, the first bridge erected at the Point and demolished in 1907. B... More
U.S. Steel Duquesne Works, Fuel & Utilities Plant, Along Monongahela R...
See also HAER PA-115 for additional documentation. Includes written data (pages 239 through 248). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More
U.S. Steel Duquesne Works, Fuel & Utilities Plant, Along Monongahela R...
See also HAER PA-115 for additional documentation. Includes written data (pages 239 through 248). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Bellows Falls Arch Bridge, Spanning Connecticut River, North Walpole, ...
Significance: When built, the bridge was the longest single span highway bridge in the U.S. and is was among the largest three-hinged arch bridges in the world. The structure has also played an important role i... More
Bellows Falls Arch Bridge, Spanning Connecticut River, North Walpole, ...
Significance: When built, the bridge was the longest single span highway bridge in the U.S. and is was among the largest three-hinged arch bridges in the world. The structure has also played an important role i... More
Bellows Falls Arch Bridge, Spanning Connecticut River, North Walpole, ...
Significance: When built, the bridge was the longest single span highway bridge in the U.S. and is was among the largest three-hinged arch bridges in the world. The structure has also played an important role i... More