California State Route 18
| ||||
---|---|---|---|---|
| ||||
North end | SR 138 near Pearblossom | |||
Location | ||||
Country | United States | |||
State | California | |||
Counties | San Bernardino, Los Angeles | |||
Highway system | ||||
|
State Route 18 (SR 18) is a
Route description
The constructed portion of Route 18 begins at
SR 18 at this point follows the cities on the north face of the San Bernardino Mountains in the Mojave Desert: In
SR 18 thus takes an unusual path in the shape of a question mark. On most of the signs of the highway, cardinal descriptions are not posted below the route markers, since it does not clearly go either west/east or north/south. Also notable is that State Route 18 and 138 cover each other in opposing termini, as SR 138 ends at its southmost point in Crestline with SR 18, while SR 18's northwest most endpoint is in Llano with SR 138.
SR 18 is part of the California Freeway and Expressway System,[3] and in Apple Valley and west of I-15 are part of the National Highway System,[4] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[5] SR 18 is eligible to be included in the State Scenic Highway System,[6] but it is not officially designated as a scenic highway by the California Department of Transportation.[7]
SR 18 from SR 138 at Crestline to SR 38 at the westernmost point of Big Bear Lake, and the SR 18/38 overlap in the City of Big Bear Lake, are designated as part of the Rim of the World Scenic Byway, a National Forest Scenic Byway.[8]
History
Much of SR 18 has been signed since 1917, with the portion north of Big Bear Lake dating from 1933. Since 1963, State Route 18 has generally been legislatively defined as from
Before 1964, SR 18 continued south of San Bernardino to
Major intersections
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 to an overlap due to a correction or change, and T indicates postmiles classified as temporary ( ).[9] 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 [9][1][10] | Exit [11] | Destinations | Notes |
---|---|---|---|---|---|
San Bernardino SBD T6.18-115.91 | San Bernardino | T6.18 | Waterman Avenue | Continuation beyond SR 210 | |
T6.18 | SR 30 ; future I-210; SR 210 exit 76 | ||||
T8.26 | SR 18 Bus. south (Sierra Way) | Interchange; southbound exit only | |||
R13.28 | Waterman Canyon Road | Interchange | |||
| R17.73 | SR 138 west – Crestline | Interchange; eastern terminus of SR 138 | ||
| 20.61 | Lake Gregory, Twin Peaks | Western terminus of SR 189 | ||
| 24.71 | SR 173 – Lake Arrowhead | Eastern terminus of SR 173 | ||
SR 30 | |||||
Big Bear Dam | 44.32 | SR 38 west (North Shore Drive) – Fawnskin, Big Bear City | Eastern terminus of SR 38 | ||
Big Bear Lake | | SR 18 Bus. north (Village Drive) / Paine Road | |||
49.11 | SR 18 Bus. south (Pine Knot Avenue) | ||||
Big Bear City | 53.92 | SR 38 west (Big Bear Boulevard) / Green Way Drive – Redlands | South end of SR 38 overlap | ||
54.54 | SR 38 east (North Shore Drive) / Green Way Drive – Fawnskin | North end of SR 38 overlap | |||
Lucerne Valley | | Barstow Road to SR 247 – Barstow | |||
| Old Woman Springs Road to SR 247 – Landers, Yucca Valley | ||||
I-15 BL south (7th Street) | South end of I-15 Bus. overlap; former US 66 west | ||||
96.57 40.51[N 1] | I-15 north (Mojave Freeway) / D Street – Barstow | Interchange; south end of I-15 overlap; north end of I-15 Bus. overlap; I-15 exit 153B; D Street is former US 66 east | |||
42.03[N 1] | 151B[N 2] | Mojave Drive | |||
41.43[N 1] | 151A[N 2] | Roy Rogers Drive | |||
43.49 I-15 Bus. north) – San Bernardino Interchange; north end of I-15 overlap; I-15 exit 150 | | ||||
Victorville–Adelanto line | 100.95 | US 395 – Adelanto, San Bernardino | |||
Los Angeles LA 0.00-4.50 | Llano | 4.50 | SR 138 (Pearblossom Highway, Antelope Highway) – San Bernardino, Palmdale, Lancaster | Counterclockwise end of SR 18 | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
|
See also
- California Roads portal
References
- ^ a b California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
- ^ a b c California Highways: State Route 18
- ^ "Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
- ^ Federal Highway Administration (March 25, 2015). National Highway System: Victorville–Hesperia, CA (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 19, 2017.
Federal Highway Administration (March 25, 2015). National Highway System: California (South) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 19, 2017. - ^ 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.
- ^ "Article 2.5 of Chapter 2 of Division 1". California Streets & Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
- ^ California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation. Retrieved October 19, 2017.
- ^ Staff. "Rim of the World Scenic Byway". America's Byways. Federal Highway Administration. Archived from the original on October 29, 2011. Retrieved October 23, 2011.
- ^ 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.
- ^ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
- California Numbered Exit Uniform System, Interstate 15 Freeway Interchanges, Retrieved on 2009-02-05.
Further reading
- Roger G. Hatheway (2007). Rim of the World Drive. Images of America. Arcadia Publishing. ISBN 978-0-7385-4770-1.