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
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, Susquehanna River Bridge, Spanning Su...
Significance: The structure is significant as a late example of a reinforced concrete arch design by the Philadelphia & Reading Railroad, and perhaps the longest such structure on the former P&R system. Its des... More
Pennsylvania Railroad, Conemaugh River Viaduct, Spanning Conemaugh Riv...
Significance: This structure is the first large stone arch bridge among many that defined Chief Engineer William H. Brown's reputation as the Pennsylvania Railroad's "stone man." The site is also significant as... More
Philadelphia & Reading Railroad, Manatawny Creek Bridge, Spanning Mana...
Significance: The bridge is typical of dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century. This particular example demonstrates how the railroad used reinfo... More
Chester & Delaware River Railroad, Chester Creek Bridge, Spanning Ches...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of moveable railroad structures in this state. This bridge is remarkably low, about a foot above water at high t... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... 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, 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, 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
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
Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River...
Significance: This structure occupies the piers of the first railroad bridge to cross the Delaware River at Easton. It is also notable for its fish-belly deck trusses, an unusual variant of the Pratt design. U... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Pennsylvania Railroad, West Brownsville Junction Bridge, Spanning Mono...
Significance: This bridge's 401'-long Petit through truss is typical of long spans required on Monongahela River navigation. Its approaches feature an early installation of a reinforced concrete slab floor. Un... More
New York, Chicago & St. Louis Railroad, Elk Creek Trestle, Spanning El...
Significance: The crossing is an excellent example of the long trestles required to cross northwestern Pennsylvania's irregular topography. Unprocessed Field note material exists for this structure: N607 Surv... More
Pennsylvania Railroad, Allegheny Tunnel, Beneath Allegheny Mountain, e...
Significance: It is an example of a mid-19th century railroad tunnel featuring ashlar masonry portals and a brick arch lining. Upon completion it was the longest railroad tunnel in America, allowing railcars to... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... 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
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
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, 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, 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
Lehigh Valley Railroad, Delaware River Bridge, Spanning Delaware River...
Significance: This structure occupies the piers of the first railroad bridge to cross the Delaware River at Easton. It is also notable for its fish-belly deck trusses, an unusual variant of the Pratt design. U... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Manatawny Creek Bridge, Spanning Mana...
Significance: The bridge is typical of dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century. This particular example demonstrates how the railroad used reinfo... More
Pennsylvania Railroad, Safe Harbor Bridge, Spanning mouth of Conestoga...
Significance: The bridge is unusual two-level structure built to carry two different Pennsylvania Railroad branches. The low-grade freight line on the upper level was chief engineer William H. Brown's last majo... More
Pennsylvania Railroad, Safe Harbor Bridge, Spanning mouth of Conestoga...
Significance: The bridge is unusual two-level structure built to carry two different Pennsylvania Railroad branches. The low-grade freight line on the upper level was chief engineer William H. Brown's last majo... More
Pennsylvania Railroad, West Brownsville Junction Bridge, Spanning Mono...
Significance: This bridge's 401'-long Petit through truss is typical of long spans required on Monongahela River navigation. Its approaches feature an early installation of a reinforced concrete slab floor. Un... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More
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
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, 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
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
Pennsylvania Railroad, Conemaugh River Viaduct, Spanning Conemaugh Riv...
Significance: This structure is the first large stone arch bridge among many that defined Chief Engineer William H. Brown's reputation as the Pennsylvania Railroad's "stone man." The site is also significant as... More
Philadelphia & Reading Railroad, Skew Arch Bridge, North Sixth Street ...
See also HABS PA-1025 for additional documentation. Includes photographs. See also HAER PA-117 for additional documentation. Significance: This structure's three spans are extremely rare examples of true skew a... More
Philadelphia & Reading Railroad, Skew Arch Bridge, North Sixth Street ...
See also HABS PA-1025 for additional documentation. Includes photographs. See also HAER PA-117 for additional documentation. Significance: This structure's three spans are extremely rare examples of true skew a... More
Philadelphia & Reading Railroad, Manatawny Creek Bridge, Spanning Mana...
Significance: The bridge is typical of dozens of stone arch bridges built along the Philadelphia & Reading Railroad during the mid-19th century. This particular example demonstrates how the railroad used reinfo... More
New York, Chicago & St. Louis Railroad, Elk Creek Trestle, Spanning El...
Significance: The crossing is an excellent example of the long trestles required to cross northwestern Pennsylvania's irregular topography. Unprocessed Field note material exists for this structure: N607 Surv... More
Chester & Delaware River Railroad, Chester Creek Bridge, Spanning Ches...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of moveable railroad structures in this state. This bridge is remarkably low, about a foot above water at high t... More
Chester & Delaware River Railroad, Chester Creek Bridge, Spanning Ches...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of moveable railroad structures in this state. This bridge is remarkably low, about a foot above water at high t... More
Pennsylvania Railroad, Allegheny Tunnel, Beneath Allegheny Mountain, e...
Significance: It is an example of a mid-19th century railroad tunnel featuring ashlar masonry portals and a brick arch lining. Upon completion it was the longest railroad tunnel in America, allowing railcars to... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... 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
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, 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, 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
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, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Skew Arch Bridge, North Sixth Street ...
See also HABS PA-1025 for additional documentation. Includes photographs. See also HAER PA-117 for additional documentation. Significance: This structure's three spans are extremely rare examples of true skew a... More
Pennsylvania Railroad, Safe Harbor Bridge, Spanning mouth of Conestoga...
Significance: The bridge is unusual two-level structure built to carry two different Pennsylvania Railroad branches. The low-grade freight line on the upper level was chief engineer William H. Brown's last majo... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... 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
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, 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
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, Mule Bridge, Spanning Schulykill Rive...
Significance: The bridge is one of Philadelphia's oldest metal railroad bridges, and a rare surviving example of a wrought-iron lattice truss. Survey number: HAER PA-552 Building/structure dates: 1889 Initial... More
Philadelphia & Reading Railroad, Susquehanna River Bridge, Spanning Su...
Significance: The structure is significant as a late example of a reinforced concrete arch design by the Philadelphia & Reading Railroad, and perhaps the longest such structure on the former P&R system. Its des... More
Pennsylvania Railroad, Conemaugh River Viaduct, Spanning Conemaugh Riv...
Significance: This structure is the first large stone arch bridge among many that defined Chief Engineer William H. Brown's reputation as the Pennsylvania Railroad's "stone man." The site is also significant as... More
Pennsylvania Railroad, Safe Harbor Bridge, Spanning mouth of Conestoga...
Significance: The bridge is unusual two-level structure built to carry two different Pennsylvania Railroad branches. The low-grade freight line on the upper level was chief engineer William H. Brown's last majo... More
Philadelphia, Baltimore & Washington Railroad, Darby River Bridge, Spa...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of movable railroad structures in the state, and even more rare as an overhead-counterweight bascule bridge. Un... More
Philadelphia, Baltimore & Washington Railroad, Darby River Bridge, Spa...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of movable railroad structures in the state, and even more rare as an overhead-counterweight bascule bridge. Un... More
Philadelphia, Baltimore & Washington Railroad, Darby River Bridge, Spa...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of movable railroad structures in the state, and even more rare as an overhead-counterweight bascule bridge. Un... More
Philadelphia, Baltimore & Washington Railroad, Darby River Bridge, Spa...
Significance: Because Pennsylvania has few low-lying areas, the bridge is one of a limited number of movable railroad structures in the state, and even more rare as an overhead-counterweight bascule bridge. Un... More
New York, Chicago & St. Louis Railroad, Elk Creek Trestle, Spanning El...
Significance: The crossing is an excellent example of the long trestles required to cross northwestern Pennsylvania's irregular topography. Unprocessed Field note material exists for this structure: N607 Surv... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Pennsylvania & New Jersey Railroad, Delaware River Bridge, Spanning De...
Significance: Because of its location on the lower Delaware River, the bridge has a collection of extremely long and heavy spans. These include the world's heaviest center-bearing swing span, completed in 1896,... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... More
Erie Railway, Delaware Division, Bridge 110.54, Spanning Lackawaxen Ri...
Significance: The former Erie Railroad bridge over the Lackawaxen River is significant as a late nineteenth-century truss structure remaining in main-line service, and as the work of a major bridge-building com... 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
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