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Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

Johnstown Local Flood Protection Project, Beginning on Conemaugh River...

Significance: The project is significant example of a specialized engineering structure designed by the U.S. Army Corps of Engineers in 1937-38 and constructed between 1938-43. It was then the second largest fl... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Potomac Power Plant, On West Virginia Shore of Potomac River, about 1 mile upriver from confluence with Shenandoah River, Harpers Ferry, Jefferson County, WV

Potomac Power Plant, On West Virginia Shore of Potomac River, about 1 ...

Significance: The Potomac Power Plant was an innovative small hydroelectric facility that operated from 1899 to 1991, originally as part of a wood pulp mill (built 1888), and solely as a power house after a fir... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

Chickamauga National Military Park Tour Roads, Alexander's Bridge, At the confluence of West Chickamauga Creek and Gordon's Slough, Fort Oglethorpe, Catoosa County, GA

Chickamauga National Military Park Tour Roads, Alexander's Bridge, At ...

Significance: Alexander's Bridge, the Connecting Roadway (HAER No. GA-95-B), and Gordon's Slough Bridge (HAER No. GA-95-C) are contributing features to the Chickamauga and Chattanooga National Military Park. T... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence of Little Mystic Channel & Mystic River at northernmost ent of Navy Yard, Boston, Suffolk County, MA

Charlestown Navy Yard, Pier 11, Charlestown Waterfront at confluence o...

Significance: Pier 11 is significant as the last pier built at Charlestown Navy Yard. It is also the largest. It was originally a narrow timber pier constructed during World War II to serve in degaussing ship... More

Back Run Bridge (Ruin), Approximately 2,000 feet (610 meters) upstream & south of confluence of Third Run & Back Run, Harrisville, Ritchie County, WV

Back Run Bridge (Ruin), Approximately 2,000 feet (610 meters) upstream...

Significance: The bridge abutments along Back Run are part of an impressive list of engineering structures built by the Harrisville Southern Railroad, a Ritchie County short line. They were built with the labo... More

Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

Johnstown Local Flood Protection Project, Beginning on Conemaugh River...

Significance: The project is significant example of a specialized engineering structure designed by the U.S. Army Corps of Engineers in 1937-38 and constructed between 1938-43. It was then the second largest fl... More

Confluence of Allegheny and Monongahela rivers, Pittsburgh, Pennsylvania

Confluence of Allegheny and Monongahela rivers, Pittsburgh, Pennsylvan...

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

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Virginius Island Waterpowered Mill Complex, North bank of Shenandoah River 0.5 mile from confluence with Potomac River, Harpers Ferry, Jefferson County, WV

Virginius Island Waterpowered Mill Complex, North bank of Shenandoah R...

Significance: Virginius Island is significant because it is representative of nineteenth-century water-powered industry, the type which initially kindled America's Industrial Revolution. The Island's first ind... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Back Run Bridge (Ruin), Approximately 2,000 feet (610 meters) upstream & south of confluence of Third Run & Back Run, Harrisville, Ritchie County, WV

Back Run Bridge (Ruin), Approximately 2,000 feet (610 meters) upstream...

Significance: The bridge abutments along Back Run are part of an impressive list of engineering structures built by the Harrisville Southern Railroad, a Ritchie County short line. They were built with the labo... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

Johnstown Local Flood Protection Project, Beginning on Conemaugh River...

Significance: The project is significant example of a specialized engineering structure designed by the U.S. Army Corps of Engineers in 1937-38 and constructed between 1938-43. It was then the second largest fl... More

Johnstown Local Flood Protection Project, Beginning on Conemaugh River approx 3.8 miles downstream from confluence of Little Conemaugh & Stony Creek Rivers at Johnstown, Johnstown, Cambria County, PA

Johnstown Local Flood Protection Project, Beginning on Conemaugh River...

Significance: The project is significant example of a specialized engineering structure designed by the U.S. Army Corps of Engineers in 1937-38 and constructed between 1938-43. It was then the second largest fl... More

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesvil...

Significance: The Y-Bridge was one of the early bridges in the United States to use concrete and steel construction. At the time it was built, it was the only bridge in the United States with a Y configuration... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

[Bird's-eye view of the Garden Bridge spanning the Suzhou Creek in Shanghai, China, at the confluence of the Huangpu River, with a ferry and a cargo ship in the distance, and the Shanghai waterfront on the right]

[Bird's-eye view of the Garden Bridge spanning the Suzhou Creek in Sha...

Digital file provided by donor. Gift; Jean E. Norwood; 2010; (DLC/PP-2010:207).

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluence of Gilbert Creek, Gilbert, Mingo County, WV

Gilbert Bridge, U.S. Route 52, spanning Guyandotte River near confluen...

Significance: The Gilbert Bridge, which was constructed during the "Good Roads Movement" of the 1920s, allowed for the economic and geographic expansion of Gilbert, West Virginia by providing safe and convenien... More

West End-North Side Bridge, Spanning Ohio River, approximately 1 mile downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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 downstream from confluence of Monongahela & Allegheny rivers, Pittsburgh, Allegheny County, PA

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

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confluence of Monongahela River, Fairmont, Marion County, WV

Buffalo Creek Bridge, U.S. Route 19, spanning Buffalo Creek near confl...

Significance: The Buffalo Creek Bridge was constructed with funds appropriated under the National Industrial Recovery Act of 1933 (NIRA). Under the direction of the Public Works Administration (PWA), the NIRA ... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Spanning Sacramento River approximately 175 feet west of eastern levee on river; roughly .5 mile downstream from confluence of Sacramento & American Rivers, Sacramento, Sacramento County, CA

Sacramento River Water Treatment Plant Intake Pier & Access Bridge, Sp...

Significance: The Sacramento Water Treatment Plant Intake Pier and Access Bridge was constructed between 1921 and 1923 as a component of the Sacramento Water Filtration Plant. Designed in a Spanish Revival inf... More

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