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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.
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 ...
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 ...
The design proposed was an elevated viaduct consisting of reinforced concrete columns and precast concrete segment spans as seen in the illustration at right. The design criterion was that the new bridge should survive an 8.5 magnitude earthquake on any of several faults in the region (particularly the nearby San Andreas and Hayward faults).
Caltrans District 7 Headquarters in Los Angeles, designed by Thom Mayne. Caltrans District 8 Headquarters in San Bernardino Caltrans headquarters in Sacramento. The earliest predecessor of Caltrans was the Bureau of Highways, which was created by the California Legislature and signed into law by Governor James Budd in 1895. [7]
The San Mateo–Hayward Bridge (commonly called the San Mateo Bridge) is a bridge crossing the American state of California's San Francisco Bay, linking the San Francisco Peninsula with the East Bay. The bridge's western end is in Foster City, a suburb on the eastern edge of San Mateo. The eastern end of the bridge is in Hayward.
The Noyo River Bridge is a box girder bridge constructed of prestressed concrete crossing the Noyo River in Fort Bragg, California. [2] Owned and maintained by the California Department of Transportation, it carries motor vehicle, bicycle and pedestrian traffic over the waterway as part of California State Route 1, which is also signed as Main Street within the Fort Bragg city limits.