San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
Twin Falls-Jerome Bridge, U.S. Highway 93 Spanning Snake River, Twin F...
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
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
South Fork Trinity River Bridge, State Highway 299 spanning South Fork...
Significance: The South Fork Trinity River Bridge is one of a very limited number of cantilever truss highway bridges in California. Best suited to specific terrain conditions such as deep canyons to be crosse... More
Chelyan Bridge, Spanning Kanawha River at U.S. Route 61 spur, Chelyan,...
Significance: This bridge, spanning the Kanawha River at Chelyan, was constructed in 1928-29. The construction of the bridge showed how the volume of traffic increased as advances were made in the automobile i... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Grace Memorial Bridge, U.S. Highway 17 spanning Cooper River & Town Cr...
Significance: At 1.9 miles long, the bridge is one of the major river crossings in the American South and the largest steel truss bridge in South Carolina. At the time of its construction, it was the fifth lon... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Smith River Bridge, CA State Highway 199 Spanning Smith River, Crescen...
Significance: The Smith River Bridge was a rare California example of the cantilever highway truss bridge, a bridge type that enjoyed brief popularity during the decade spanning the late 1920s to the late 1930s... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
Blue Water Bridge, Spanning St. Clair River at I-69, I-94, & Canadian ...
Significance: When it opened in October 1938, the Blue Water Bridge symbolized the peaceful relationship between the United States and Canada, a sharp contrast to the hostilities in Europe which were about to e... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More
San Francisco Oakland Bay Bridge, Spanning San Francisco Bay, San Fran...
Significance: The San Francisco-Oakland Bay Bridge is one of the most impressive engineering structures in the United States. It is also one of the most important transportation links in the United States, ser... More