California State Route 58

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State Route 58 marker

State Route 58
SR 58 highlighted in red
Route information
Defined by Streets and Highways Code § 358
Maintained by Caltrans
Length 241 mi[1] (388 km)
Existed 1964 – present
Major junctions
West end US 101 near Santa Margarita
East end I-15 in Barstow
Counties San Luis Obispo, Kern, San Bernardino
Highway system
SR 57 SR 59

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. At various points it is known as the Calf Canyon Highway, Carrisa Highway, Bakersfield-McKittrick Highway, Rosa Parks Highway, Rosedale Highway, Barstow-Bakersfield Highway, Kern County Korean War Veterans Memorial Highway, and Mojave-Barstow Highway.

Route description[edit]

Spring Wildflowers off SR 58 near California Valley, CA, 2010

Route 58 between Santa Margarita and Buttonwillow is a winding mountain road through a thinly populated area. From its westernmost terminus at US 101 near Santa Margarita, Route 58 heads east along the former US 101 (El Camino Real) for one mile, where Route 58 splits from El Camino Real. Route 58 then heads east and up the winding mountain road, passing through thinly populated area and an intersection with State Route 229. Alternatives such as State Route 46 to the north or State Route 166 to the south are recommended, as much of this section of Route 58 is prohibited to truck traffic. However, this section of SR 58 does pass through the Carrizo Plain, which is known for its scenic beauty and geological features, including the San Andreas Fault. Route 58 then takes another winding road before joining with State Route 33 in the small town of McKittrick. Route 33 then splits at the north end of McKittrick before Route 58 then enters another, but brief winding road. Route 58 then proceeds northeast for several miles before changing to an east-west alignment and reaching Buttonwillow. A few miles later, Route 58 has an interchange with Interstate 5. Approximately 7 miles (11 km) east of Interstate 5, Route 58 briefly joins State Route 43 before continuing east and eventually reaching the Bakersfield city limits.

Route 58 joins State Route 99 for about 1 mile (1.6 km) through Bakersfield before splitting as a freeway and heading east. Route 58 briefly enters expressway status with two at-grade intersections in the Caliente area before resuming freeway status east of Caliente. Route 58 then reaches the Tehachapi city limits and traverses the Tehachapi Pass before dropping out of the Tehachapi Mountains into the Antelope Valley at the town of Mojave. Shortly after an intersection with State Route 14, Route 58 reverts to an expressway east of Mojave before resuming freeway status bypassing North Edwards, Edwards Air Force Base, and Boron. East of Boron, Route 58 reverts to one lane in each direction before an at-grade signal intersection with U.S. Route 395. Approximately 10 miles (16 km) east of Route 395, Route 58 resumes expressway status with two lanes in each direction until just before reaching the easternmost terminus at Interstate 15 near Barstow.

Route 58 is a freeway from its south junction with Route 99 in Bakersfield (West Bakersfield Interchange) to several miles east of Mojave (a freeway bypass of Mojave was completed in 2004), except for two grade-level intersections two miles (3.2 km) apart in the Caliente area. There is another grade level intersection east of Mojave and west of the main Edwards AFB north gate exit where California City Blvd. intersects it. Other freeway segments are bypasses of Boron and Barstow. Except for the Boron freeway bypass, SR 58 is primarily a four-lane expressway (two lanes per direction) just east of Boron up to the Barstow bypass segment with the exception of the portion of Route 58 between Boron and approximately 5 miles (8.0 km) east of Kramer Junction, which is currently two-lane highway and is not yet an expressway.

Route 58 takes the southernmost route through the Sierra Nevada and allows motorists to travel between Northern California and points to the east, such as Las Vegas and Interstate 40 without having to face the extreme traffic congestion of greater Los Angeles. Route 58 and Interstate 80 are the only freeways to cross the Sierra Nevada. The route also offers an alternative to the often treacherous Donner Pass to truckers traveling from the San Francisco Bay Area to points eastward; prior to the construction of Interstate 80, the road (as U.S. Route 466) was heavily used for this purpose.

SR 58 is part of the California Freeway and Expressway System,[2] and east of I-5 is part of the National Highway System,[3] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[4] SR 58 is eligible for the State Scenic Highway System,[5] but it is not officially designated as a scenic highway by the California Department of Transportation.[6] SR 58 has several names throughout its length, including the Blue Star Memorial Highway (for its entire length); the Kern County Korean War Veterans Memorial Highway, for the section from Route 184 to the Kern County/San Bernardino County Line; and the Rosa Parks Highway, for the section between Route 99 and Route 184. The Korean War Veterans name honors the approximately 8,120 veterans from Kern County, while the section named for Rosa Parks honors the civil rights activist.[7] The portion of the 58 from Barstow to Bakersfield is sometimes referred to as the Barstow–Bakersfield Highway.[8]


Westbound 58 in the Temblor Range, descending into the Carrizo Plain
A truck passes eastbound along the busy Highway 58 through the Antelope Valley. The Tehachapi Mountains are visible in the distance.

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 SR 58 between Bakersfield and Barstow was signed U.S. Route 466. Also at that time, the segment of Route 58 between State Route 33 at McKittrick and 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 north of Barstow. Route 58 was rerouted to I-15 in Barstow south of the I-40 interchange. The former eastern terminus is now known as "Old Highway 58."


California has long sought federal funds for an extension of Interstate 40 west of Barstow; any such extension would use the general path of Route 58, if not existing highway, as far west at least as Bakersfield, whose rapid growth has made it a significant generator of traffic in its own right. The desired highway is being built piecemeal as Caltrans has funds available, at least between Mojave and Barstow. Two at-grade intersections within 1 12 miles (2.4 km) of each other around mile 76, roughly halfway between Bakersfield and Mojave (Bealeville Road and California State Route 223), would have to be either closed or upgraded to interchanges for the whole of Route 58 to be up to Interstate standards.

In the Kramer Junction area, Caltrans is planning to realign and widen a 13.3 mile segment of State Route 58 from 0.4 miles west of the Kern/San Bernardino County line to a point which is approximately 7.5 miles east of Kramer Junction from a two-lane conventional highway to a four-lane expressway; and construct an interchange at the 58/US 395 junction. This will replace the at-grade junction of Route 58 and US 395 in Kramer Junction.[9] A groundbreaking ceremony for the Kramer Junction Expressway was held on January 19, 2018.[10]

In western Bakersfield, the Westside Parkway, a freeway running from intersection of Heath Road and Stockdale Highway east to Truxtun Avenue, was completed in April 15, 2015.[11] Opening in stages since 2013, the road is currently under the jurisdiction of Bakersfield. As part of the Centennial Corridor project, Caltrans plans to build an eastern extension of the Westside Parkway to the current junction of Highways 58 and 99 at the West Bakersfield Interchange, but construction remained controversial since it would displace dozens of homes and businesses.[12]; by September 2017 all but a few buildings in the path had been demolished[13] Once the connection to Highway 99 is completed, Highway 58 will then be rerouted onto Stockdale Highway and the Westside Parkway (and the city transferring the latter's jurisdiction to Caltrans), with further plans to upgrade Stockdale Highway from Heath Road west to Interstate 5 as a freeway.[14]

The San Luis Obispo Planning Commission is considering a permit application for the California Valley Solar Ranch and has released a Draft Environmental Impact Report with a public comment period closure date November 1, 2010. Among the points raised in the DEIR is the aesthetic impact on the viewshed which would be particularly troublesome if large industrial scale arrays of solar panels are placed north of Route 58 in the section of road just east of Soda Lake Road.

Business loops[edit]


State Route 58 Business
Location Mojave, California

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
Location Tehachapi, California

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
Location Boron, California

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 BernardinoKern county line and the beginning of the Boron bypass.

Major intersections[edit]

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions).[15] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County Location Postmile
Destinations Notes
San Luis Obispo
SLO 0.00-57.15
Atascadero 0.00 US 101 – San Francisco, San Luis Obispo, Los Angeles Interchange; west end of SR 58; US 101 exit 211
6.89 SR 229 north – Creston, Shandon
45.20 Soda Lake Road – California Valley, Soda Lake Serves Carrizo Plain National Monument
KER 0.00-R143.86
McKittrick 15.41
33.45[N 1]
SR 33 south – Taft West end of SR 33 overlap
34.29[N 1]
SR 33 north – Coalinga East end of SR 33 overlap
Buttonwillow 27.28 To I-5 north / Buttonwillow Drive
31.64 I-5 – Sacramento, Los Angeles Interchange; I-5 exit 257
8.11[N 2]
SR 43 north (Enos Lane) – Shafter, Wasco West end of SR 43 overlap
9.16[N 2]
SR 43 south (Enos Lane) / Sidding Road – Taft East end of SR 43 overlap
Bakersfield 51.81
25.65[N 3]
SR 99 north / SR 178 east (24th Street) – Fresno, Sacramento, Downtown Bakersfield Interchange; west end of SR 99 overlap; CA 99 exit 26A northbound, 26 southbound
West end of freeway
24.60[N 3] 25C California Avenue – Civic Center Exit number follows SR 99
110A SR 99 south / Real Road – Los Angeles East end of SR 99 overlap; Real Road not signed eastbound, accessible via Stockdale Highway exit; left exit eastbound; SR 99 exit 24
23.62[N 3] Stockdale Highway, Brundage Lane Eastbound exit only
111 Chester Avenue, H Street
R54.42 112 SR 204 (Union Avenue) Former US 99
R55.40 113 Cottonwood Road
R56.41 114 Mt. Vernon Avenue
R57.41 115 Oswell Street
R58.44 116 Fairfax Road
R59.44 117 SR 184 (Weedpatch Highway, Morning Drive) – Lamont Signed as Weedpatch Highway eastbound, Morning Drive westbound
R61.51 119 Edison Road – Edison
R63.58 121 Comanche Drive – Arvin, Edison
R65.68 123 Tower Line Road
69.75 127 General Beale Road
East end of freeway
75.63 SR 223 west – Arvin
West end of freeway
80.24 137 Hart Flat
82.06 139 Keene
R85.15 142 Broome Road
R90.72 148 SR 202 (Tucker Road) – Tehachapi
Tehachapi R91.67 149 Mill Street
R94.16 151 Tehachapi Boulevard (SR 58 Bus.)
R99.49 156 Sand Canyon Road – Monolith
R101.56 159 Cameron Road
R108.90 165
SR 58 Bus. east – Mojave
Former US 466 east / SR 58 east
R111.13 167 SR 14 – Bishop, Mojave SR 14 exit 71; former US 6
R116.22 172
SR 58 Bus. west – Mojave
Former US 466 west / SR 58 west
25th Street At-grade intersection; east end of freeway
R127.63 California City Boulevard – California City At-grade intersection; west end of freeway
R129.67 186 Edwards AFB
R132.04 188 Clay Mine Road
R136.40 193 Twenty Mule Team Road Former US 466 east
R137.77 194 Gephart Road, Rocket Site Road
R139.00 195 Boron Rest Area
R139.80 196 Borax Road (SR 58 Bus. east), Rocket Site Road
Boron R142.87 199 Boron Avenue – Boron
San Bernardino
SBD R0.00-R34.81
East end of freeway
Twenty Mule Team Road (SR 58 Bus. west) Former US 466 west
Kramer Junction 5.40 US 395 – Bishop, San Bernardino
West end of freeway
227 Hinkley Road
231 Lenwood Road Connects to former US 466 / SR 58
Barstow R33.65 233 CR 66 (West Main Street) to I-15 Bus. – Barstow Former US 66 / US 91
R34.81 234 I-15 (Mojave Freeway) to I-40 – Las Vegas, San Bernardino Eastbound exit and westbound entrance, exit 234 is for 15 southbound; east end of SR 58; I-15 exit 179; trumpet interchange.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. ^ a b Indicates that the postmile represents the distance along SR 33 rather than SR 58.
  2. ^ a b Indicates that the postmile represents the distance along SR 43 rather than SR 58.
  3. ^ a b c Indicates that the postmile represents the distance along SR 99 rather than SR 58.

See also[edit]


  1. ^ a b California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation. 
  2. ^ California State Legislature. "Section 250–257". Streets and Highways Code. Sacramento: California State Legislature. Retrieved June 9, 2017. 
  3. ^ Federal Highway Administration (March 25, 2015). National Highway System: California (South) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 14, 2017. 
  4. ^ Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012. 
  5. ^ California State Legislature. "Section 260–284". Streets and Highways Code. Sacramento: California State Legislature. Retrieved June 9, 2017. 
  6. ^ California Department of Transportation (September 7, 2011). "Officially Designated State Scenic Highways and Historic Parkways". Sacramento: California Department of Transportation. Retrieved October 14, 2017. 
  7. ^ California Department of Transportation; California State Transportation Agency (January 2015). 2014 Named Freeways, Highways, Structures and Other Appurtenances in California. Sacramento: California Department of Transportation. pp. 37, 242, 263. Archived from the original (PDF) on May 30, 2015. Retrieved May 30, 2015. 
  8. ^ Pitchford, Phil (2006-01-07). "Proposal hints at traffic relief". The Press-Enterprise. Retrieved 2009-02-15. 
  9. ^ Orr, Patti (25 August 2017). "State Route 58 (SR-58) Kramer Junction Expressway Project". Mojave Desert News. Retrieved 1 March 2018. 
  10. ^ Orr, Patti (26 January 2018). "Kramer Junction Expressway Groundbreaking Ceremony". Mojave Desert News. Retrieved 1 March 2018. 
  11. ^ "Westside Parkway now open". April 15, 2015. Archived from the original on 2009-10-20. 
  12. ^ "Caltrans Picks Preferred Route For Centennial Corridor Freeway in Bakersfield". Valley Public Radio. November 15, 2012. Retrieved September 8, 2013. 
  13. ^,-119.016667&z=12&t=H&marker0=35.366667,-119.016667,Bakersfield%2C%20California
  14. ^ "Bakersfield opens first new freeway in 37 years". The Bakersfield Californian. August 2, 2013. Retrieved September 8, 2013. 
  15. ^ a b California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015. 
  16. ^ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
  17. ^ California Department of Transportation, California Numbered Exit Uniform System, State Route 58 Freeway Interchanges, Retrieved on 2009-02-05.
  18. ^ California Department of Transportation, California Numbered Exit Uniform System, State Route 99 Freeway Interchanges, Retrieved on 2009-02-05.

External links[edit]

Route map: Google

KML is from Wikidata