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Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, Allegheny County, PA

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela Rive...

See also HAER PA-200 for additional documentation. Includes written data (pages 138 through 141). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Greene County, PA

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... More

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Greene County, PA

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

Monongahela Connecting Railroad Company, Hot Metal Bridge, Spanning Monongahela River at mile post 3.1, Pittsburgh, Allegheny County, PA

Monongahela Connecting Railroad Company, Hot Metal Bridge, Spanning Mo...

Significance: Formerly enabled the hauling of molten iron from J & L Blast Furnaces on the north side over the bridge to the Open Hearth Furnaces on the south side of the Monongahela River. Survey number: HAER... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

Wheeling-Pittsburgh Steel Corporation, Allenport Works, Boiler House, Route 88 on West bank of Monongahela River, Allenport, Washington County, PA

Wheeling-Pittsburgh Steel Corporation, Allenport Works, Boiler House, ...

Survey number: HAER PA-411-A Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Wheeling-Pittsburgh Steel Corporation, Allenport Works, Boiler House, Route 88 on West bank of Monongahela River, Allenport, Washington County, PA

Wheeling-Pittsburgh Steel Corporation, Allenport Works, Boiler House, ...

Survey number: HAER PA-411-A Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 134 & 135). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation... More

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 134 & 135). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation... More

Brady Street Bridge, Spanning Monongahela River, Pittsburgh, Allegheny County, PA

Brady Street Bridge, Spanning Monongahela River, Pittsburgh, Allegheny...

See also HAER PA-3 for additional documentation. Includes photographs & written data. Unprocessed Field note material exists for this structure: FN-180 Survey number: HABS PA-614 Building/structure dates: 189... More

U.S. Steel Homestead Works, Structural Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Structural Mill, Along Monongahela River, ...

See also HAER PA-200 for additional documentation. Includes written data (pages 124 through 130). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

Sites Homestead, Monongahela National Forest (Tract 390) East of Route 28, Seneca Rocks, Pendleton County, WV

Sites Homestead, Monongahela National Forest (Tract 390) East of Route...

Significance: The Sites Homestead architecturally reveals the evolution of a mid-nineteenth century, one-room log structure, encased and expanded upon by a frame addition, into a two-story, frame vernacular res... More

Taylor Run-Yorty Run Schoolhouse, Legislative Routes 62175 (PA Highway 481) & 62161, Monongahela, Washington County, PA

Taylor Run-Yorty Run Schoolhouse, Legislative Routes 62175 (PA Highway...

Significance: Although much altered in this century, the Taylor Run-Yorty Run School House still serves as an example of the vernacular public architecture of the middle third of the nineteenth century. With be... 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

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Street, Pittsburgh, Allegheny County, PA

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Str...

Significance: Designed by Gustav Lindenthal, one of America's most famous bridge engineers, as a two-lane bridge. One lane was erected in 1883, and another was added in 1891. The span is Pittsburgh's most gra... More

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Street, Pittsburgh, Allegheny County, PA

Smithfield Street Bridge, Spanning Monongahela River on Smithfield Str...

Significance: Designed by Gustav Lindenthal, one of America's most famous bridge engineers, as a two-lane bridge. One lane was erected in 1883, and another was added in 1891. The span is Pittsburgh's most gra... More

Charleroi-Monessen Bridge, Spanning Monongahela River at State Route 2018, North Charleroi, Washington County, PA

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

U.S. Steel Homestead Works, Press Shop No. 1, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 1, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 131 through 133). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

111 Second Street (Commercial Building), Monongahela, Washington County, PA

111 Second Street (Commercial Building), Monongahela, Washington Count...

Picryl description: Public domain photograph of a historic hotel building, free to use, no copyright restrictions.

U.S. Steel Duquesne Works, 22-Inch Bar Mill, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, 22-Inch Bar Mill, Along Monongahela River, ...

See also HAER PA-115 for additional documentation. Includes written data (pages 227 through 238). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel National Tube Works, Skelp Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Skelp Mill Building, Along Monongahela...

Survey number: HAER PA-380-B Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel Edgar Thomson Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Braddock, Allegheny County, PA

U.S. Steel Edgar Thomson Works, Basic Oxygen Steelmaking Plant, Along ...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

Point Bridge, Spanning Monongahela River at Point of Pittsburgh, Pittsburgh, Allegheny County, PA

Point Bridge, Spanning Monongahela River at Point of Pittsburgh, Pitts...

See also HABS PA-604 for additional documentation. Includes drawings. See also HAER PA-3 for additional documentation. Includes written data. Significance: This bridge, the second to be built near this site, wa... More

Liberty Bridge, Spanning Monongahela River, East Carson Street & Second Avenue at State Route 3069, Pittsburgh, Allegheny County, PA

Liberty Bridge, Spanning Monongahela River, East Carson Street & Secon...

Significance: This was the longest and most expensive bridge built in Allegheny County when it was completed in 1928. The bridge links Pittsburgh's downtown area with the Liberty Tunnels, built through Mt. Wash... More

U.S. Steel Duquesne Works, Auxiliary Buildings & Shops, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Auxiliary Buildings & Shops, Along Monongah...

Public domain photograph of a shop, shopping, free to use, no copyright restrictions image - Picryl description

U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Electric Furnace Steelmaking Plant, Along M...

Public domain photograph of electric power plant, generation, free to use, no copyright restrictions image - Picryl description

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... More

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monon...

See also HAER PA-115 for additional documentation. Includes written data (pages 190 through 210). Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward inte... 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

U.S. Steel Homestead Works, Harvey Shop, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Harvey Shop, Along Monongahela River, Home...

See also HAER PA-200 for additional documentation. Includes written data (pages 142 through 144). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

Brady Street Bridge, Spanning Monongahela River at South Twenty-second Street, Pittsburgh, Allegheny County, PA

Brady Street Bridge, Spanning Monongahela River at South Twenty-second...

See also HABS PA-614 for additional documentation. Includes drawings. Significance: The Brady Street Bridge, contracted by the Schultz Bridge & Iron Co. of Pittsburgh, was a steel-riveted, through-highway bridg... More

Brady Street Bridge, Spanning Monongahela River at South Twenty-second Street, Pittsburgh, Allegheny County, PA

Brady Street Bridge, Spanning Monongahela River at South Twenty-second...

See also HABS PA-614 for additional documentation. Includes drawings. Significance: The Brady Street Bridge, contracted by the Schultz Bridge & Iron Co. of Pittsburgh, was a steel-riveted, through-highway bridg... More

Brady Street Bridge, Spanning Monongahela River at South Twenty-second Street, Pittsburgh, Allegheny County, PA

Brady Street Bridge, Spanning Monongahela River at South Twenty-second...

See also HABS PA-614 for additional documentation. Includes drawings. Significance: The Brady Street Bridge, contracted by the Schultz Bridge & Iron Co. of Pittsburgh, was a steel-riveted, through-highway bridg... More

W. A. Young & Sons Foundry & Machine Shop, On Water Street along Monongahela River, Rices Landing, Greene County, PA

W. A. Young & Sons Foundry & Machine Shop, On Water Street along Monon...

Significance: W. A. Young and Sons Foundry and Machine Shop is a well-preserved example of a local machine shop that served the industrial and personal needs of its surrounding area. It represents a transition... More

W. A. Young & Sons Foundry & Machine Shop, On Water Street along Monongahela River, Rices Landing, Greene County, PA

W. A. Young & Sons Foundry & Machine Shop, On Water Street along Monon...

Significance: W. A. Young and Sons Foundry and Machine Shop is a well-preserved example of a local machine shop that served the industrial and personal needs of its surrounding area. It represents a transition... More

U.S. Steel Duquesne Works, Blast Furnace Plant, Along Monongahela River, Duquesne, Allegheny County, PA

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 River, Duquesne, Allegheny County, PA

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 National Tube Works, Main Pipe Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Mononga...

Survey number: HAER PA-380-A Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Mononga...

Survey number: HAER PA-380-A Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Mononga...

Survey number: HAER PA-380-A Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Mononga...

Survey number: HAER PA-380-A Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Main Pipe Mill Building, Along Mononga...

Survey number: HAER PA-380-A Building/structure dates: 1906 Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel Homestead Works, 48" Plate Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, 48" Plate Mill, Along Monongahela River, H...

See also HAER PA-200 for additional documentation. Includes written data (pages 99 through 101). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the n... More

U.S. Steel Homestead Works, 48" Plate Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, 48" Plate Mill, Along Monongahela River, H...

See also HAER PA-200 for additional documentation. Includes written data (pages 99 through 101). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the n... More

U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Mononga...

See also HAER PA-200 for additional documentation. Includes written data (pages 147 through 179). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Mononga...

See also HAER PA-200 for additional documentation. Includes written data (pages 147 through 179). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the ... More

U.S. Steel Duquesne Works, Fuel & Utilities Plant, Along Monongahela River, Duquesne, Allegheny County, PA

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 River, Duquesne, Allegheny County, PA

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 River, Duquesne, Allegheny County, PA

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 River, Duquesne, Allegheny County, PA

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

Travels in America performed in 1806 : for the purpose of exploring the rivers Alleghany, Monongahela, Ohio, and Mississippi, and ascertaining the produce and condition of their banks and vicinity, volume 2

Travels in America performed in 1806 : for the purpose of exploring th...

Picryl description: Public domain illustrated travel, exploration, and geography book page scan, free to use, no copyright restrictions image.

Pittsburgh waterfront. Monongahela and Allegheny Rivers, Pennsylvania

Pittsburgh waterfront. Monongahela and Allegheny Rivers, Pennsylvania

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

Steel plant on Monongahela River. Clairton, Pennsylvania

Steel plant on Monongahela River. Clairton, Pennsylvania

Picryl description: Public domain image of a power station, dam, electric generator, industrial building, free to use, no copyright restrictions.

Houses along Monongahela River and Boulevard of the Allies. Pittsburgh, Pennsylvania

Houses along Monongahela River and Boulevard of the Allies. Pittsburgh...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

[Penna. Pittsburg - Coke ovens: "coke ovens & their smoke consumers, on Monongahela River"]

[Penna. Pittsburg - Coke ovens: "coke ovens & their smoke consumers, o...

H66552 U.S. Copyright Office. Stereo by Keystone. Copyrighted Oct. 13, 1905. Card number: 6519. Caption card tracings: Shelf.

Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

Monongahela Incline Plane, Connecting North side of Grandview Avenue a...

Significance: The first constructed and oldest passenger incline plane in Pittsburgh, this system retains the 1882 safety brake and bull wheel and 1935 electrical system including drive motors, operating brakes... More

Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

Monongahela Incline Plane, Connecting North side of Grandview Avenue a...

Significance: The first constructed and oldest passenger incline plane in Pittsburgh, this system retains the 1882 safety brake and bull wheel and 1935 electrical system including drive motors, operating brakes... More

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela...

Survey number: HAER PA-380-E Public domain photograph - historical image of Pennsylvania, United States, free to use, no copyright restrictions image - Picryl description

Point Bridge, Spanning Monongahela River at Point of Pittsburgh (No. 9 Monongahela River), Pittsburgh, Allegheny County, PA

Point Bridge, Spanning Monongahela River at Point of Pittsburgh (No. 9...

See also HAER PA-5 for additional documentation. Includes photographs & written data. Survey number: HABS PA-604 Building/structure dates: 1925-1927 Initial Construction

Point Bridge, Spanning Monongahela River at Point of Pittsburgh (No. 9 Monongahela River), Pittsburgh, Allegheny County, PA

Point Bridge, Spanning Monongahela River at Point of Pittsburgh (No. 9...

See also HAER PA-5 for additional documentation. Includes photographs & written data. Survey number: HABS PA-604 Building/structure dates: 1925-1927 Initial Construction

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, Allegheny County, PA

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, Allegheny County, PA

Conrail Port Perry Bridge, Spanning Monongahela River, Port Perry, All...

Part of the Monongahela River Recording Project, which included HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; HAER PA-299, Monongahela Lock and Dam No. 7; and HAER PA-304, Lower Monongahela Rive... More

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Greene County, PA

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... More

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Greene County, PA

Monongahela River Lock & Dam No. 7, River Mile No. 85, Greensboro, Gre...

Part of the Monongahela River Recording Project, which included HAER PA-300, Port Perry Bridge; HAER PA-385, Monongahela Navation Company Lock and Dam No. 7; and HAER PA-304, Lower Monongahela River Public Impr... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Open Hearth Steelmaking Plant, Along Monon...

Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation's most important steel mills and the Mon Valley's status as the pre-eminent iron and steel ... More

Monongahela Connecting Railroad Company, Hot Metal Bridge, Spanning Monongahela River at mile post 3.1, Pittsburgh, Allegheny County, PA

Monongahela Connecting Railroad Company, Hot Metal Bridge, Spanning Mo...

Significance: Formerly enabled the hauling of molten iron from J & L Blast Furnaces on the north side over the bridge to the Open Hearth Furnaces on the south side of the Monongahela River. Survey number: HAER... More

U.S. Steel Homestead Works, Machine Shop No. 1, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Machine Shop No. 1, Along Monongahela Rive...

Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Blast Furnace Plant, Along Monongahela Riv...

See also HAER PA-200 for additional documentation. Includes written data (pages 76 through 94). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the na... More

Monongahela Railroad, New Geneva Bridge, Spanning Monongahela River, South of Lock & Dam No. 7, New Geneva, Fayette County, PA

Monongahela Railroad, New Geneva Bridge, Spanning Monongahela River, S...

Significance: The bridge at New Geneva is significant for its long Petit through through truss, and more importantly, for its erection by end manufacturing. At the time of its construction, it was the longest a... More

U.S. Steel Duquesne Works, West bank of Monongahela River along State Route 837, Duquesne, Allegheny County, PA

U.S. Steel Duquesne Works, West bank of Monongahela River along State ...

Significance: The construction of the Duquesne Steel Works marked an important event in the movement toward integrated steel producing ventures in the Monongahela Valley of western Pennsylvania. Constructed af... More

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Press Shop No. 2, Along Monongahela River,...

See also HAER PA-200 for additional documentation. Includes written data (pages 134 & 135). Significance: As a group, the structures and steel-making equipment from Homestead Works represented one of the nation... More

U.S. Steel Homestead Works, Along Monongahela River, north of Eighth Avenue, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Along Monongahela River, north of Eighth A...

Significance: Established in 1879, Homestead Works is one of six plants (Homestead, Edgar Thomson, Duquesne, Irvin, National and Clairton) which, until the collapse in 1982, comprised U.S. Steel's Mon Valley wo... More

U.S. Steel Homestead Works, Along Monongahela River, north of Eighth Avenue, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, Along Monongahela River, north of Eighth A...

Significance: Established in 1879, Homestead Works is one of six plants (Homestead, Edgar Thomson, Duquesne, Irvin, National and Clairton) which, until the collapse in 1982, comprised U.S. Steel's Mon Valley wo... More

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, ...

See also HAER PA-301 for additional documentation. Includes drawings & written data. See also HAER PA-200 for additional documentation. Includes written data (pages 110 through 119). Significance: As a group, t... More

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, Homestead, Allegheny County, PA

U.S. Steel Homestead Works, 160" Plate Mill, Along Monongahela River, ...

See also HAER PA-301 for additional documentation. Includes drawings & written data. See also HAER PA-200 for additional documentation. Includes written data (pages 110 through 119). Significance: As a group, t... 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

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