Project Sections. The high-speed rail system planned for California will eventually encompass over 800 miles of rail, with up to 24 stations. Because the project is so large, and will run through areas of the state with extremely different geographical, environmental and economic issues, the project has been broken into ten separate sections.

California High-Speed Rail (CAHSR) is a publicly funded high-speed rail system being developed in California by the California High-Speed Rail Authority. Phase 1, about 494 miles (795 km) long, is planned to run from San Francisco to Los Angeles and Anaheim via the Central Valley, and is partially funded and under construction.

The Authority contracted with California Rail Builders to construct all high-speed rail structures located within this segment, which includes 11 civil structures comprised of overpasses, underpasses, and viaducts built to take high-speed trains over roadways, waterways, and existing rail lines.

Design Builders of California’s High-Speed Rail Use QuickMap to find information on how high-speed rail construction is impacting road travel in your area. You can also find real-time traffic information from across the state, including traffic congestion, lane closures, and chain controls.

• Includes construction of at-grade, retained fill and aerial sections of the high-speed rail alignment • Substantial completion expected by end of 2023 Central Valley Update