Alvord Lake Bridge, San Francisco, San Francisco County, CA
Significance: This structure is the first reinforced concrete bridge in America. Though only 20 feet in span, the bridge utilized Ransome twisted steel bars and served as predecessor for thousands of reinforce... More
Alvord Lake Bridge, San Francisco, San Francisco County, CA
Significance: This structure is the first reinforced concrete bridge in America. Though only 20 feet in span, the bridge utilized Ransome twisted steel bars and served as predecessor for thousands of reinforce... More
Alvord Lake Bridge, San Francisco, San Francisco County, CA
Significance: This structure is the first reinforced concrete bridge in America. Though only 20 feet in span, the bridge utilized Ransome twisted steel bars and served as predecessor for thousands of reinforce... More
Alvord Lake Bridge, San Francisco, San Francisco County, CA
Significance: This structure is the first reinforced concrete bridge in America. Though only 20 feet in span, the bridge utilized Ransome twisted steel bars and served as predecessor for thousands of reinforce... More