County Route 66 (San Bernardino County, California)

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County Road 66

National Trails Highway
CR 66 highlighted in red
Route information
Length175.7 mi[1] (282.8 km)
California Scenic County.svg Scenic route (in its entirety)
Major junctions
West end1st Street in Oro Grande
Major intersections
East end US 95 in Arrowhead Junction
CountryUnited States
CountySan Bernardino
Highway system
CR S80 CR 145

County Route 66 (CR 66) is an east–west numbered road in San Bernardino County, California, United States. It runs for 175.7 miles (282.8 km)[1] from Oro Grande (north of Victorville) to the U.S. Route 95 (US 95) at Arrowhead Junction (northwest of Needles). The entire route is part of the former U.S. Route 66 (US 66), connecting towns that were bypassed by Interstate 40 (I-40) such as Oro Grande and Amboy. It is the only numbered county route in San Bernardino County.

Route description

CR 66 sign near Amboy

The route is part of the California Route Marker Program.[2] CR 66 begins at its western terminus, on the National Trails Highway at the intersection of 1st Street in unincorporated Oro Grande, near the Victorville city limits. From there, it heads north towards Barstow where it becomes Main Street headed eastbound. After an overlap with Interstate 15 Business (I-15 BL), it continues south to the I-40 interchange, where it runs concurrently with I-40 east for four miles (6.4 km) before splitting from the freeway at the Nebo Street exit. At that junction, CR 66 runs parallel to I-40 all the way to Ludlow, but then turns southeast towards Amboy Crater National Natural Landmark and the town of Amboy. It then heads back towards I-40, crossing paths with the freeway again at Fenner, before heading east on Goffs Road to the junction with US 95, where it terminates.[1]

At 175.7 miles (282.8 km) in length, CR 66 is the longest county route in California.[citation needed]

The CR 66 sign program began in San Bernardino County in June 2011,[3] defining the route from just north of I-15 in Victorville to US 95 northwest of Needles. Although the route officially stops short of the Victorville city limits, there has been signage for the route within that city.[4]

In 2012, the county announced an extension to the sign program which would sign the route through Needles.[5]


Historic US 66 (CA).svg

CR 66 originally was part of the historic US 66, established in 1926. California decommissioned this highway in 1979,[6] and in 1985, it was decommissioned nationally.[7] In 2011, San Bernardino County Supervisor Brad Mitzlefelt proposed Resolution 63, which would establish a county route with the number 66, as a tribute to the original "Mother Road". Route markers were first installed in September 2011, upon passage of the resolution, which also allowed the possibility of the route being extended in the future along other parts of old US 66 in San Bernardino County.[2][8] In May 2012, the County Board of Supervisors designated CR 66 a County Scenic Highway.[4]

As of 2014, CR 66 has been closed east of Chambless due to bridge failure.[9] No known date of reopening is known as of 2022[10]

As of 2022, CR 66 has been closed west of Amboy to Ludlow due to over 100 timber bridge failures.[11]

Major junctions

The entire route is in San Bernardino County.

Oro Grande0.000.001st StreetWestern terminus; road continues south as National Trails Highway
Barstow27.744.6 SR 58 – San Bernardino, Las Vegas, BakersfieldInterchange; SR 58 exit 233
L Street (I-15 BL west) to I-15
West end of I-15 BL overlap
33.153.3 I-15 – San Bernardino, Las VegasI-15 exit 184
33.654.1Eastern terminus of I-15 BLEast end of I-15 BL overlap; west end of I-40 overlap; I-40 exit 1

I-40 west – San Bernardino
West end of freeway on I-40
35.457.02Marine Corps Logistics Base (East Main Street)Exit number follows I-40
37.860.8East end of freeway on I-40

I-40 east
East end of I-40 overlap; no access to I-40 east from CR 66 westbound; I-40 exit 5
Newberry Springs51.883.4 I-40 – NeedlesI-40 exit 18
Ludlow83.7134.7 I-40 – Barstow, NeedlesI-40 exit 50
Fenner151.1243.2 I-40 – Barstow, NeedlesI-40 exit 107
175.7282.8 US 95 – Searchlight, Las Vegas, NeedlesEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b c d Google (May 18, 2015). "Overview of CR 66 (California)" (Map). Google Maps. Google. Retrieved May 18, 2015.
  2. ^ a b "County Route Marker Program Gets Its Kickoff on Route 66". Highland Community News. July 20, 2011. Retrieved May 18, 2015.
  3. ^ Warnick, Ron (July 20, 2011). "San Bernardino County will sign part of Route 66". Route 66 News. Retrieved March 1, 2016.
  4. ^ a b Garrett Metzger, Nikki (August 6, 2012). "Supervisor Mitzlefelt Unveils Route 66 Marker in Front of the Famous Emma Jean Café". High Desert Daily. Retrieved May 18, 2015.
  5. ^ Warnick, Ron (May 2, 2012). "San Bernardino County extends sign program to Needles". Route 66 News. Retrieved March 2, 2016.
  6. ^ Special Committee on U.S. Route Numbering (June 25, 1979). "Route Numbering Committee Agenda Showing Action Taken by the Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. Retrieved May 19, 2015 – via Wikimedia Commons.
  7. ^ Special Committee on U.S. Route Numbering (June 26, 1985). "Route Numbering Committee Agenda" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Retrieved May 19, 2015 – via Wikisource.
  8. ^ Faigin, Daniel. "San Bernardino County Route #66". California Highways: Everything You Ever Wanted To Know About Numbered Highways in California. Daniel P. Faigin. Retrieved May 18, 2015.
  9. ^ "Road Closures and Weight Restrictions".
  10. ^ "Current Road Closures".
  11. ^ "National Trails Highway – Route 66". County of San Bernardino Department of Public Works. Retrieved December 4, 2022.

External links