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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.
In 1986, the Caltrans bridge survey found the Sixth Street Viaduct eligible for inclusion in the National Register of Historic Places. [ 2 ] The demolition of the predecessor bridge was due to serious structural issues, including several large cracks, resulting from the high alkaline content of the concrete composition, due to architectural ...
Four books have been published about, or featuring, the Carquinez Bridges:Spanning the Carquinez Strait: The Alfred Zampa Memorial Bridge (2003) by Caltrans, and Spanning the Strait: Building the Alfred Zampa Memorial Bridge (2004), Al Zampa and the Bay Area Bridges (2005), and, most recently, Carquinez Bridge: 1927-2007 (2017) all by John V ...
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.
Minimum design speed: A minimum design speed of 70 mph (113 km/h) is to be used, except in mountainous and urban areas, where the minimum is 50 mph (80 km/h). [ 4 ] The sight distance , curvature and superelevation of the highway should follow the current edition of AASHTO's A Policy on Geometric Design of Highways and Streets for the chosen ...
May 11—Caltrans broke ground on a major Sacramento River bridge and viaduct replacement project on State Route 162 in the Butte City area of Glenn County last week. "With about 1,200 farms ...
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 said in 2022 that the I-80 project was its least significant: “Priority 24 of 24.” In 2024, the state agency called the grant request “a top priority.” 2022 Trade Corridor ...