История трассы 58 в Калифорнии: изменения и развитие

Major state highway in California

State Route 58 did not exist as a California sign route until 1964, although previous to 1964, it was part of California Legislative Route 58. The other part of Legislative Route 58 is California's segment of Interstate 40; previous to 1964 it was a segment of US 66. Prior to 1964, the segment of State Route 58 between Bakersfield and Barstow was signed U. S. Route 466. Also at that time, the segment of SR 58 between State Route 33 at McKittrick and State Route 99 in Bakersfield was signed as State Route 178. Although it was proposed for signing as Route 178 in 1934, the segment of Legislative Route 58 between US 101 near Santa Margarita and State Route 33 at McKittrick was not signed prior to 1964. Note that US 466 was co signed with US 99, now State Route 99, between Bakersfield and Famoso Junction. Between Famoso and US 101 at Paso Robles, US 466 largely became SR 46. The eastern terminus was originally at I 15 in northeastern Barstow. SR 58 was rerouted to I 15 in Barstow south of the I 40 interchange in c. 2000. The former eastern terminus is now known as "Old Highway 58". Freeway bypasses in Tehachapi, Boron, Mojave, Hinkley, and Kramer Junction were completed in c. 1975, 1981, 2003, 2017, and 2020, respectively.

In western Bakersfield, the Westside Parkway, a freeway running from Stockdale Highway (near Heath Road) east to Truxtun Avenue, was completed on April 15, 2015, with interchanges in between at Allen Road, Calloway Drive, Coffee Road, and Mohawk Street. Opening in stages since 2013, the road was originally under the jurisdiction of the city of Bakersfield. As part of the Centennial Corridor project, Caltrans built an extension of the Westside Parkway east to the junction of SR 58 and SR 99 at the West Bakersfield Interchange. Although construction was controversial since it displaced dozens of homes and businesses, by September 2017, all but a few buildings in the path had been demolished. On February 5, 2021, the city transferred the Westside Parkway to Caltrans and California Highway Patrol jurisdiction. City officials then announced in October 2022 that the project was nearly complete, and that they were working on the last 800 feet of the connection, specifically, the northbound SR 99 to westbound SR 58 transition ramp, with an estimated 8 months of construction left. Meanwhile, Caltrans began installing signage rerouting SR 58 traffic from I 5 onto Stockdale Highway and the Westside Parkway east to at least Mohawk Street. The Centennial Corridor was inaugurated on February 9, 2024, with a ceremonial bicycle ride, and officially opened to traffic on February 17, 2024, with some connections between SR 58 and SR 99 remaining closed. The rest of SR 58 on Rosedale Highway between Mohawk Street and SR 99 is planned to be transferred to city control. Future plans are to upgrade Stockdale Highway from I 5 to Heath Road as a freeway.

State Route 58 Business is a business route of California State Route 58 in Mojave. It provides access to downtown Mojave as Mojave Barstow Highway. It also follows mostly the former routing of U. S. Route 466.

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.

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.

Exits on the Westside Parkway segment are currently unnumbered.