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It is developed by the California Department of Transportation (Caltrans) Division of Safety Programs "in substantial conformance to" the national Manual on Uniform Traffic Control Devices developed by the Federal Highway Administration. The first edition of the CA MUTCD was published in 2006, replacing an earlier supplement to the national MUTCD.
James E. Roberts (November 30, 1930 - July 6, 2006) was a noted American civil engineer. He was recognized with industry and government awards for his leadership in bridge engineering, especially in the area of seismic retrofit.
The James E. Roberts Memorial Bridge is a 1,400 foot two-lane highway bridge along the California State Route 120/California State Route 49 concurrency, in Tuolumne County, California. The bridge spans the Tuolumne River just north of Lake Don Pedro, near the community of Chinese Camp. It opened in 1971.
Highway designs in the US are subject to the AASHTO specifications, [4] [6] but the text does not contain specific procedures and recommendations. [2] Railway bridges are built according to the "Manual for Railway Engineering" [12] published by the American Railway Engineering and Maintenance-of-Way Association (AREMA).
The Georgia Street Bridge in San Diego, California, was constructed in 1907 to carry traffic, after a streetcar line was cut through a ridge where Georgia Street stood. [ citation needed ] In 1914, a Romanesque spandrel arch with Mission Revival styling made of reinforced concrete and designed by J.R. Comly was built there.
With ship traffic projected to increase to require as many as 400 openings by 2035, [8] and traffic on State Route 12 also projected to increase, the City of Rio Vista, the Solano Transportation Authority, and Caltrans have all studied potential replacements for the Helen Madere Bridge. Two goals were first, to remove the drawbridge or at least ...
Sixth Street Bridge from the LA River: Other name(s) 6th Street Viaduct: Maintained by: City of Los Angeles and California Department of Transportation (Caltrans) ID number: 53C-1880 (City of Los Angeles), 53-0595 (Caltrans) Characteristics; Design: Viaduct: Material: Reinforced concrete and steel: Total length: 3,500 feet (1,100 m) Width: 46 ...
The myth may have developed due to the hollow box design of the 1,880-foot center span, combined with the low-profile barges that made it appear to float on its own during construction. However, Caltrans and the bridge's principal architect, Robert Mosher, maintain that the legend is false. [34]