Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. State Route 58 (SR 58) is an east-west highway across the California Coast Ranges, the southern San Joaquin Valley, the Tehachapi Mountains, which border the southern Sierra Nevada, and the Mojave Desert. It runs between its western terminus near Santa Margarita (junction U.S. Route 101) and its eastern terminus at Barstow (junction Interstate 15). It has junctions with Interstate 5 near Buttonwillow, State Route 99 in Bakersfield, State Route 202 in Tehachapi, State Route 14 in Mojave, and U.S. Route 395 at Kramer Junction. Route 58 gives good access to Edwards Air Force Base.