For most of its 218-mile route, Brightline West plans to build in the median of Interstate 15 between Las Vegas and Southern California to help keep costs down. (Courtesy of Brightline West)RANCHO CUCAMONGA, Calif. — Brightline West aims to connect Las Vegas and Southern California with high-speed rail. The project also aims to ease the notorious traffic congestion between L.A. and Las Vegas that frequently turns Interstate-15 into a parking lot. From left to right: Brightline founder Wes Edens, then-Secretary of Transportation Pete Buttigieg, U.S. Sen. Catherine Cortez Masto (D-NV) and U.S. Rep. Dina Titus (D-NV) at a groundbreaking ceremony at the Brightline West Las Vegas station in April 2024 in Las Vegas. With federal money in doubt, California’s high-speed train seeks a new path forward The leaders of California’s high-speed rail project say they’ve learned from past mistakes.