California HSR completes milestone with new Tulare County overpass, US August 23, 2025 | News, North America News The California High-Speed Rail Authority (CHSRA) has announced the completion of the Avenue 88 Grade Separation in Tulare County. The new overpass is part of the 275.98-km-long Central Valley segment ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password