BuildHSR: High-Speed Rail Projects
High-Speed Rail Completes Two More Structures
The California High-Speed Rail Authority (Authority) announced in the week of October 27, 2025, the completion of two more structures within the 119-miles of construction underway in the Central Valley. On October 30, 2025, the Authority announced the completion of the Avenue 17 Grade Separation project in Madera County. The next day, the Authority announced the completion of the Hanford Armona Road grade separation in Kings County. The completion of these two projects brings the total number of completed structures to nearly 60.
Avenue 17 was once a cul-de-sac ending at the BNSF railroad tracks. The grade separation will now serve as a new through roadway, improving east-west mobility for the surrounding community while reducing emergency response times for the area. Located between Lake Street and Raymond Road, the Avenue 17 grade separation spans 614 feet long and is more than 43 feet wide. The grade separation also includes a pedestrian walkway, taking vehicular traffic and pedestrians over the BNSF and future high-speed rail tracks.
The Hanford Armona Road grade separation is located east of the city of Hanford between State Route 43 and 7th Avenue. The structure spans 209 feet, 80 feet wide, and will take east and westbound vehicular traffic over the future high-speed rail tracks. It is also located less than a mile south of the Hanford Viaduct, high-speed rail’s largest active construction project.
Avenue 17 in Madera County
Hanford Armona Road in Kings County
Construction by the Numbers (As of November 2025)
Construction Progress
Structures Completed
Miles of Guideway Completed
Structures Underway
Miles of Guideway Underway
Structures to begin
Miles of Guideway to begin
Construction Update
State Route 43 Tied Arch Bridge
The construction team recently completed the installation of all 44 hanger guide pipes, which are designed to house the tension rods that help support the structure. Falsework has also been erected to help ironworkers tie rebar for the future arches that will span over State Route 43. When complete, the Tied Arch Bridge will span 249 feet long and will take high-speed trains over State Route 43! #BuildCA #BuildHSR #InfrastructureWeek
Construction by the Numbers (As of November 2025)
Small Business Revenue
Construction Package 1
Construction Package 2-3
Construction Package 4
Construction Update
Spring 2025
Read all about the progress being made on the 119-miles of construction in the Central Valley. This includes updates to some of the largest projects including the Conejo and Hanford Viaducts.
Construction by the Numbers (As of November 2025)
Number of Small Businesses
Construction Package 1
Construction Package 2-3
Construction Package 4
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Closures and Detours
Road Closures Along Herndon Avenue And Golden State Boulevard In Fresno
MULTIPLE ROADWAY AND OFF RAMP CLOSURES: Road closure along Herndon Avenue, between Riverside Drive and State Route (SR) 99; Road closure along Golden State Boulevard between Kathryn Avenue and Veterans Boulevard. Work is scheduled to begin at 9 p.m. starting Friday,...
Lane And Shoulder Closures Along G And Divisadero Streets In Fresno
MULTIPLE CLOSURES: Lane and shoulder closures along G Street, south of Divisadero Street. Lane closure along Divisadero Street, between Thorne Avenue and G Street. Work is scheduled from 9 a.m. to 4 p.m. and will continue through Friday, Jan. 23, 2026. Download Map of...
Lane Closures Along Frontage Road in Madera County
Lane closures along Frontage Road, between Club and Wayside Drive in Madera County for ongoing construction of a high-speed rail grade separation. Work is scheduled from 7 a.m. to 5 p.m. and will continue through Friday, Jan. 30, 2026. Download Map of Closure/Detour...
Multiple Closures Along Herndon Avenue And State Route 99 Off-Ramp In Fresno
Multiple Lane Closures: Intermittent lane closures along Herndon Avenue, between the northbound SR 99 to Herndon Avenue off-ramp and Riverside Drive; Intermittent lane closures on the northbound SR 99 to Herndon Avenue off-ramp. Work is scheduled from 11 p.m. to 6...
Hauling Along Iona, Seventh And Houston Avenues In Kings County
Hauling along Iona, Seventh, and Houston avenues in Kings County to transport materials to a high-speed rail construction site. Hauling is scheduled intermittently between 7 a.m. and 7 p.m. starting Monday, Jan. 12 through Monday, Feb. 23, 2026. Download Map of...