Alvord Lake Bridge, San Francisco, San Francisco County, CA
Summary
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 reinforced concrete bridges built in the 20th century.
Survey number: HAER CA-33
Building/structure dates: 1889 Initial Construction
Tags
Date
1969 - 1980
Contributors
Historic American Engineering Record, creator
Ransome, Ernest L
City of San Francisco
Yearby, Jean P, transmitter
Location
San Francisco, California, United States, 37.78616, -122.47605
Source
Library of Congress
Copyright info
No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html
