Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Maclay's Mill Twin Bridge (East & West), Spanning Conodoguinet Creek a...
Significance: The bridges are outstanding examples of surviving stone arch bridges constructed by a 19th century designer craftsperson. Before the appearance of professional engineers and architects during the ... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More
Tacoma Narrows Bridge, Spanning Narrows at State Route 16, Tacoma, Pie...
Significance: The Tacoma Narrows Bridge was the first suspension span constructed in the United States after its predecessor's failure in 1940 from wind-induced torsional oscillations. Research of design flaws... More
Walnut Street Bridge, Spanning Susquehanna River at Walnut Street (Sta...
Significance: The bridge is a representative example of a late 19th century factory-manufactured roadway bridge. The bridge consists of 15 pin-connected wrought-iron Baltimore-type through-truss spans manufactu... More