U.S. Route 466. Tehachapi State Route 58 Business is a business route of California State Route 58 in Tehachapi. It provides access to downtown Tehachapi as Tehachapi Boulevard. It also follows the former routing of U.S. Route 466 and is overlapped with State Route 202. Boron State Route 58 Business is a business route of California State Route 58 in Boron. It provides access to downtown Boron as Twenty Mule Team Road. It also follows the former routing of U.S. Route 466. It is signed from westbound Route 58 approaching the San Bernardino–Kern county line and the beginning of the Boron bypass. Major intersections Westside Parkway (Future SR 58) This exit list consists of the former Bakersfield city-maintained freeway (now maintained by Caltrans) that will eventually become part of SR 58. Exit numbers have not yet been posted on this freeway segment. See also References External links Caltrans: Route 58 highway conditions California Highways State Route 58 California @ AARoads.com - State Route 58 058 058 State Route 058 State Route 058 State Route 058 Mojave Desert San Joaquin Valley Tehachapi Mountains Interstate 40 U.S. Route 66 in California Transportation in Bakersfield, California