Bardwell's Ferry Bridge, Spanning Deerfield River on Bardwell's Ferry ...
Significance: The Bardwell's Ferry Bridge is an excellent, virtually unaltered, example of William Douglas's 1878 patent for a wrought-rion lenticular truss bridge. It is one of approximately fifty lenticular ... More
Cedar Street Bridge, Spanning Kinnickinnic River, on Cedar Street, Riv...
Significance: The Cedar Street Bridge is one of two steel arch bridges remaining in the State of Wisconsin. The Minneapolis Steel and Machinery Company, that built the bridge, was a regionally significant comp... More
Going-to-the-Sun Road, West Glacier, Flathead County, MT
Significance: Going-to-the-Sun Road is a 51-mile stretch of scenic mountain road in Glacier National Park. The road is significant as a unique engineering accomplishment of the early twentieth century, in that... More
Going-to-the-Sun Road, West Glacier, Flathead County, MT
Significance: Going-to-the-Sun Road is a 51-mile stretch of scenic mountain road in Glacier National Park. The road is significant as a unique engineering accomplishment of the early twentieth century, in that... More
Going-to-the-Sun Road, West Glacier, Flathead County, MT
Significance: Going-to-the-Sun Road is a 51-mile stretch of scenic mountain road in Glacier National Park. The road is significant as a unique engineering accomplishment of the early twentieth century, in that... More
Bardwell's Ferry Bridge, Spanning Deerfield River on Bardwell's Ferry ...
Significance: The Bardwell's Ferry Bridge is an excellent, virtually unaltered, example of William Douglas's 1878 patent for a wrought-rion lenticular truss bridge. It is one of approximately fifty lenticular ... More
Seven Mile Bridge, Spanning Gardner River at Grand Loop Road, Lake, Te...
Significance: Seven Mile Bridge typifies the early design philosophy of the National Park Service, which was to use indigenous materials to harmonize man-made features with their natural surroundings. This phi... More
Lower Rollstone Street Bridge, Spanning Nashua River on Rollstone Stre...
Significance: The (Lower) Rollstone Street Bridge is one of only five known surviving Parker patent trusses in the United States, and the oldest of the three located in Massachusetts. It is also one of the two... More
Lower Rollstone Street Bridge, Spanning Nashua River on Rollstone Stre...
Significance: The (Lower) Rollstone Street Bridge is one of only five known surviving Parker patent trusses in the United States, and the oldest of the three located in Massachusetts. It is also one of the two... More
Soda Butte Creek Bridge No. 1, Spans Soda Butte Creek at Northeast Ent...
Significance: Soda Butte Creek Bridge typifies the early design philosophy of the National Park Service, which was to use indigenous materials to harmonize man-made features with their natural surroundings. Th... More
Depoe Bay Bridge, Spanning Depoe Bay at Oregon Coast Highway (U.S.101)...
Significance: Depoe Bay Bridge was designed in 1926 by State Bridge Engineer, Conde B. McCullough. It was the first of thirteen reinforced deck and through arches that were built on the Oregon Coast Highway. ... More
Going-to-the-Sun Road, West Glacier, Flathead County, MT
Significance: Going-to-the-Sun Road is a 51-mile stretch of scenic mountain road in Glacier National Park. The road is significant as a unique engineering accomplishment of the early twentieth century, in that... More
Going-to-the-Sun Road, West Glacier, Flathead County, MT
Significance: Going-to-the-Sun Road is a 51-mile stretch of scenic mountain road in Glacier National Park. The road is significant as a unique engineering accomplishment of the early twentieth century, in that... More
Larwood Bridge, Spanning Crabtree Creek, Fish Hatchery Road (CR 648), ...
Significance: Larwood Bridge is one of the best surviving examples of the standard Howe truss covered bridge designed by the Oregon State Highway Commission in early 20th century. It illustrates the open-sided... More
Larwood Bridge, Spanning Crabtree Creek, Fish Hatchery Road (CR 648), ...
Significance: Larwood Bridge is one of the best surviving examples of the standard Howe truss covered bridge designed by the Oregon State Highway Commission in early 20th century. It illustrates the open-sided... More