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
Click Below for More Information
Closures and Detours
Road Closure Along Fifth Avenue In Kings County
Road closure along Fifth Avenue, between Niles and Waukena/Orange avenues in Kings County for ongoing work on a high-speed rail grade separation. Work is scheduled from 6 a.m. to 6 p.m. on Thursday, Feb. 26 and Friday, Feb. 27, 2026. Download Map of Closure/Detour...
Intermittent Traffic Impacts Along State Route 43 in Tulare County
Intermittent traffic impacts along SR 43 between Avenue 108 and Avenue 84 in Tulare County for work on a high-speed rail structure. Work is scheduled between 6 a.m. and 6 p.m. starting Wednesday, Feb. 25 thru Friday Feb. 27, 2026. Download Map of Closure/Detour...
Lane And Sidewalk Closures Along Olive And West Avenues In Fresno
Multiple Closures: Lane and sidewalk closure along Olive Avenue, east of West Avenue; Lane closures along West Avenue, north and south of Olive Avenue. Work is scheduled from 9 a.m. to 4 p.m. starting Monday, Feb. 23 thru Friday, Feb. 27, 2026. Download Map of...
Intermittent Traffic Impacts Along Conejo Avenue In Fresno County
Intermittent traffic impacts along Conejo Avenue, between Topeka and Willow avenues in Fresno County for work on the Conejo Viaduct. Work is scheduled from 4 a.m. to 7 p.m. and will continue through Friday, March 6, 2026. Download Map of Closure/Detour (PDF)Signage...
Lane Closures Along H Street in Fresno
Lane closure along H Street, north and south of Roosevelt Avenue in Fresno for utility work. Work will continue through Friday, March 20, 2026. Download Map of Closure/Detour (PDF)Signage will be in place to direct traffic. Access will be maintained to all property...