California State Route 115

State Route 115 (SR 115) is a state highway in the U.S. state of California. It runs in Imperial County from Interstate 8 (I-8) southeast of Holtville to SR 111 in Calipatria. The routing was added to the state highway system in 1933, and was constructed by 1934; SR 115 was officially designated in the 1964 state highway renumbering.

State Route 115
SR 115 highlighted in red
Route information
Defined by Streets and Highways Code § 415
Maintained by Caltrans
Length35.24 mi[1] (56.71 km)
Major junctions
South end I-8 near Holtville
 
North end SR 111 / CR S30 in Calipatria
Location
CountiesImperial
Highway system
← SR 114SR 116 →

Route description
SR 115 northbound towards Calipatria

SR 115 begins with an interchange at I-8. It then heads northwest through the community of Date City and briefly enters the city of Holtville. Near its exit of the city, it intersects a few county roads before turning due north and continuing through rural Imperial County, eventually beginning an overlap with SR 78 and continuing west. East of Alamorio, SR 115 turns due north again, and intersects CR S26. After a few miles, the highway turns due west, reaching its north end in Calipatria at SR 111.[2]

SR 115 is part of the California Freeway and Expressway System,[3] but is not 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 115 is eligible for the State Scenic Highway System,[6] but it is not officially designated as a scenic highway by the California Department of Transportation.[7] In 2013, SR 115 had an annual average daily traffic (AADT) of 830 between Wirt Road and East Avenue, and 5,800 between the intersection of Walnut Avenue and 5th Street and the intersection of the highway with Holt Avenue, the latter of which was the highest AADT for the highway.[8]

History

The routing from Brawley to Calipatria was added to the state highway system in 1933;[9] following the completion of the road from Yuma to San Diego, increased tourism and growth led to the development of more highways in Imperial County, and the construction of the system was expected to aid in future growth, according to the Los Angeles Times.[10] The northern section above SR 78 was legislatively defined as Route 187; the part of the highway south of Route 187 was defined as Route 201.[11]

The roadway had been constructed by 1934, though the state described the majority of it as a "low type" road.[12] The portion from Route 78 to US 80 was paved by 1938,[13] and the entire road had been paved by 1940.[14] By 1956, the routing was signed as Route 115.[11][15] By 1961, the highway continued just west of Holtville to an intersection with US 80 (later I-8), where it ran concurrently with US 80 briefly before heading south to a junction with SR 98 in Bonds Corner.[16][17]

SR 115 was officially defined in the 1964 state highway renumbering.[11][16] The segment south of SR 78 was altered in 1972; the portion between I-8 south to SR 98 near Bonds Corner was deleted, and the definition was clarified from "Route 8 near Holtville" to "Route 8 southeasterly of Holtville".[18] By 1975, the routing of SR 115 had been adjusted to end at I-8, south of the old US 80 routing.[19][20]

Future

The 2007 Imperial County Transportation Plan proposed the improvement of SR 115 from the Evan Hewes Highway north to SR 111 from a two-lane highway to a four-lane expressway.[21]

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 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).[22] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Imperial County.

LocationPostmile
[1][8][22]		DestinationsNotes
​R3.20 I-8 – San Diego, YumaInterchange; south end of SR 115
Holtville​Holt Avenue (CR S32 north)South end of CR S32 overlap; former SR 115 north
​Cedar Avenue (CR S32 south)North end of CR S32 overlap
​9.54 CR S80 west (Evan Hewes Highway) – El Centro, San DiegoFormer US 80
​​ CR S28 (Worthington Road) – Imperial
​​ CR S27 (Keystone Road)
​21.17
21.02[N 1]		 SR 78 east – Glamis, Palo Verde, BlytheSouth end of SR 78 overlap; former CR S78 east
​18.65[N 1]
21.18		 SR 78 west – Holtville, BrawleyNorth end of SR 78 overlap
​25.99 CR S26 (Rutherford Road)
Calipatria35.24 SR 111 (Sorenson Avenue) – Brawley, Niland, IndioNorth end of SR 115
35.24 CR S30 (Main Street)Continuation beyond SR 111
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. Indicates that the postmile represents the distance along SR 78 rather than SR 115.
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See also
  •  California Roads portal

References
  1. California Department of Transportation (October 2018). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
  2. San Diego County Road Atlas (Map). Thomas Brothers. 2009.
  3. "Article 2 of Chapter 2 of Division 1 of the California Streets and Highways Code". Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
  4. Federal Highway Administration (March 25, 2015). National Highway System: California (South) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved May 25, 2015.
  5. 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.
  6. "Article 2.5 of Chapter 2 of Division 1 of the California Streets & Highways Code". Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
  7. California Department of Transportation (August 2019). "Officially Designated State Scenic Highways and Historic Parkways" (XLSX). Sacramento: California Department of Transportation.
  8. California Department of Transportation (2013). "All Traffic Volumes on CSHS". Sacramento: California Department of Transportation.
  9. California State Assembly. "An act to amend sections 2, 3 and 5 and to add two sections to be numbered 6 and 7 to an act entitled 'An act to provide for the acquisition of rights of way for and the construction, maintenance..." Fiftieth Session of the Legislature. Statutes of California. State of California. Ch. 767 p. 2034–2042.
  10. Staff (June 3, 1934). "Many Projects Under Construction Mean Renewed Prosperity for Imperial County". Los Angeles Times. p. D5.
  11. California State Assembly. "An act to establish a Streets and Highways Code, thereby consolidating and revising the law relating to public ways and all appurtenances thereto, and to repeal certain acts and parts of acts specified herein". Fifty-first Session of the Legislature. Statutes of California. State of California. Ch. 29 p. 287.
  12. California Division of Highways (1934). Road Map of the State of California (Map). [1:1,463,040]. Sacramento: California Division of Highways. OCLC 26955146.
  13. California Division of Highways (1938). Road Map of the State of California (Map). [1:1,463,040]. Sacramento: California Division of Highways.
  14. California Division of Highways (1940). Road Map of the State of California (Map). [1:1,463,040]. Sacramento: California Division of Highways.
  15. California State Highway Map (Map). California Division of Highways. 1956.
  16. California State Assembly. "An act to add Section 253 and Article 3 (commencing with Section 300) to Chapter 2 of Division 1 of, and to repeal Section 253 and Article 3 (commencing with Section 300) of Chapter 2 of Division 1 of, the..." 1963 Session of the Legislature. Statutes of California. State of California. Ch. 385 p. 1182.
  17. California State Highway Map (Map). California Division of Highways. 1961.
  18. California State Assembly. "An act to amend Sections 263.3, 263.8, and 415 of, and to add Section 486 to, the Streets and Highways Code, relating to state highways". 1972 Session of the Legislature. Statutes of California. State of California. Ch. 742.
  19. California Division of Highways (1970). State Highway Map: California (Map). [1:1,341,120]. Sacramento: California Division of Highways.
  20. California Department of Transportation (1975). California State Highways (Map). [1:990,366]. Sacramento: California Department of Transportation.
  21. Staff (May 2011). "SR 115 Transportation Concept Report" (PDF). California Department of Transportation. p. 1. Retrieved December 30, 2014.
  22. 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.

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