Pennsylvania Railroad, Brilliant Cut-Off, South Wye, Linden Avenue at ...
Significance: This structure is significant for its association with the Pennsylvania Railroad's Brilliant Cut-Off, a bypass through residential neighborhoods around downtown Pittsburgh. The elevated south wye ... More
Philadelphia & Reading Railroad, Flat Rock Tunnel, Beneath Flat Rock H...
Significance: It is one of the earliest railroad tunnels built in America. The Philadelphia & Reading Railroad made significant contributions to America's transportation history and the history of the anthracit... More
Philadelphia & Reading Railroad, Flat Rock Tunnel, Beneath Flat Rock H...
Significance: It is one of the earliest railroad tunnels built in America. The Philadelphia & Reading Railroad made significant contributions to America's transportation history and the history of the anthracit... More
Pennsylvania Railroad, Mount Union Bridge, Spanning Juniata River, nor...
Significance: The bridge is significant as an example of the Pennsylvania Railroad's prolific stone arch bridge construction during the early 20th century. In addition, it elegantly breaks classical aesthetic r... More
Pennsylvania Railroad, Mount Union Bridge, Spanning Juniata River, nor...
Significance: The bridge is significant as an example of the Pennsylvania Railroad's prolific stone arch bridge construction during the early 20th century. In addition, it elegantly breaks classical aesthetic r... More
Pennsylvania Railroad, Mount Union Bridge, Spanning Juniata River, nor...
Significance: The bridge is significant as an example of the Pennsylvania Railroad's prolific stone arch bridge construction during the early 20th century. In addition, it elegantly breaks classical aesthetic r... More
Pennsylvania Railroad, Mount Union Bridge, Spanning Juniata River, nor...
Significance: The bridge is significant as an example of the Pennsylvania Railroad's prolific stone arch bridge construction during the early 20th century. In addition, it elegantly breaks classical aesthetic r... More
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
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
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
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
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
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
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
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
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
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
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
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Pennsylvania Railroad, Trenton Cut-Off, Bridge No. 25 at Earnest, Span...
Significance: The bridge is significant for its association with the Pennsylvania Railroad's Trenton Cut-Off, an early low-grade freight line around Philadelphia. Unprocessed Field note material exists for thi... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Central Railroad of New Jersey, Lehigh River Bridge at Easton, Spannin...
Significance: This skewed crossing of the Lehigh River, with one span over the Third Street Bridge, is significant as a highly visible local landmark. When the structure partially collapsed during a 1902 flood,... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Pennsylvania Railroad, Granville Bridge, Spanning Juniata River, 1.25 ...
Significance: The bridge is significant as a well-preserved example of a medium-length stone arch bridge, representing the Pennsylvania Railroad's monumental capitol investment and desire for "permanent" struct... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Philadelphia & Reading Railroad, Mill Creek Bridge, Spanning Mill Cree...
Significance: This structure is significant as a well-preserved example among dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century, and one of few with a curv... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Pickering Creek Trestle, Spanning Pickering Cre...
Significance: The trestle is significant as a high trestle with both horizontal and vertical curvature. Unprocessed Field note material exists for this structure: N596 Survey number: HAER PA-521 Building/str... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Brandywine Valley Viaduct, Spanning Brandywine ...
Significance: It is notable for its height, length, and complex geometry, which includes both horizontal and vertical curvature. It is also significant in association with the Pennsylvania Railroad's Philadelph... More
Pennsylvania Railroad, Rockville Bridge, Spanning Susquehanna River, N...
Significance: The stone arch bridge at Rockville's remains the world's longest of its type. It best represents the Pennsylvania's Railroad's monumental capitol investment and desire for "permanent" structures a... More
Pennsylvania Railroad, Rockville Bridge, Spanning Susquehanna River, N...
Significance: The stone arch bridge at Rockville's remains the world's longest of its type. It best represents the Pennsylvania's Railroad's monumental capitol investment and desire for "permanent" structures a... More
Pennsylvania Railroad, Rockville Bridge, Spanning Susquehanna River, N...
Significance: The stone arch bridge at Rockville's remains the world's longest of its type. It best represents the Pennsylvania's Railroad's monumental capitol investment and desire for "permanent" structures a... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, Whitford Bridge, Spanning Amtrak tracks at Whit...
Significance: The bridge's main span, a pin-connected Parker through truss, is an exceptionally long example of its type. Its length surpasses the practical limit of 300', beyond which a subdivided Pennsylvania... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pennsylvania Railroad, French Creek Trestle, Spanning French Creek, no...
Significance: With its sixteen plate-girder spans of various ages, is an excellent example of American railroads' practice of recycling main-line structures into branches and sidings. Unprocessed Field note ma... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Pittsburgh, Fort Wayne & Chicago Railway, Beaver River Bridge, Spannin...
Significance: The bridge includes several unusually shallow and heavy skewed Warren deck trusses. The interesting and well-documented history of this crossing includes a rare instance of highway and railroad br... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More
Philadelphia & Reading Railroad, Wissahickon Creek Viaduct, Spanning W...
Significance: The Wissahickon Creek Viaduct marks the beginning of a resurgence in major stone arch bridge construction on American railroads after the panic of 1873. Unprocessed Field note material exists for... More