Significance: Everett was selected as a headquarters for maintenance, engineering, and fare collection for the Pennsylvania Turnpike because of its central location on the original turnpike between Irwin and Ca More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: This structure is the only surviving suspension bridge in the American West dating to the mid 19th century. When reconstructed over Lake Oroville, it was "strengthened" with pile supports under t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The river crossing where the bridge now stands had historically been the western gateway into Harrisburg. For over a century, spans here were operated by the Harrisburg Bridge Company, including t More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge is a good example of open spandrel type arch construction, as described in engineering textbooks published during the first quarter of the twentieth century. This type of bridge constr More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More
Significance: The bridge was built by The Union Bridge Company of Portland, Oregon. It is a cantilever deck truss that rises 550 feet above the height of the River. At the time of construction it was reported More