Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Three Sisters Bridges, Seventh Street Bridge, Spanning Allegheny River...
Survey number: HAER PA-490-B Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000018
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
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
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
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Three Sisters Bridges, Ninth Street Bridge, Spanning Allegheny River a...
Survey number: HAER PA-490-C Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000019
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
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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Three Sisters Bridges, Ninth Street Bridge, Spanning Allegheny River a...
Survey number: HAER PA-490-C Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000019
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
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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, Ninth Street Bridge, Spanning Allegheny River a...
Survey number: HAER PA-490-C Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000019
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
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
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
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Washington Crossing Bridge, Spanning Allegheny River at Fortieth Stree...
See also HABS PA-1179 for additional documentation. Includes drawings. Significance: The bridge is an outstanding example of a long-span metal deck arch bridge. Its unique architectural details, forged in a suc... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... 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
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
McKee's Rocks Bridge, Spanning Ohio River at Chartiers Avenue (State R...
Significance: The bridge is an outstanding example of a long-span metal through arch bridge constructed by Allegheny County as part of an intensive bridge-building campaign during the late 1920s and early 1930s... More
Three Sisters Bridges, Seventh Street Bridge, Spanning Allegheny River...
Survey number: HAER PA-490-B Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000018
Three Sisters Bridges, Seventh Street Bridge, Spanning Allegheny River...
Survey number: HAER PA-490-B Building/structure dates: 1924-1926 Initial Construction National Register of Historic Places NRIS Number: 86000018
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More
Sewickley Bridge, Spanning Ohio River, Sewickley, Allegheny County, PA
Significance: The Bridge is representative of the type of bridge that was being built at the turn of the century. Also significant, because of the attention it had since its inception and resultant completion,... More