California_State_Route_259
California State Route 259
Highway in California
State Route 259 (SR 259) is an approximately 1.48-mile (2.38 km) state highway in the U.S. state of California, serving as a freeway connector between I-215 and SR 210 in San Bernardino. It has one complete interchange (Highland Avenue) and one partial interchange (E Street, northbound only).
SR 259 highlighted in red | ||||
| Route information | ||||
| Maintained by Caltrans | ||||
| Length | 1.48 mi[1] (2.38 km) | |||
| Existed | 1968–present | |||
| Major junctions | ||||
| South end |  I-215 in San Bernardino | |||
| North end |  SR 210 in San Bernardino | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | San Bernardino | |||
| Highway system | ||||
| ||||
SR 259 splits off from I-215 as a full freeway and continues north, interchanging with Highland Avenue. SR 259 then turns east and has a partial interchange with E Street before merging with SR 210. SR 259 thus provides a route for traffic to move between I-215 northbound and SR 210 eastbound as well as from SR 210 westbound to I-215 southbound; the interchange between SR 210 and I-215 does not provide these movements.[2]
Almost all signage along the route either mention "To I-215 south" or "To SR 210 east" instead of SR 259, including the exits from SR 210[3] and I-215,[4] respectively, the freeway entrances from Highland Avenue,[5][6] and an overhead guide sign along northbound SR 259.[7] Since 2022, Caltrans had erected SR 259 reassurance markers just beyond the start of the entrance ramps from SR 210[8] and I-215.[9]
SR 259 is part of the California Freeway and Expressway System,[10] and is a freeway for its entire length,[2] and is part of the National Highway System,[11] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[12]
![[icon]](./File:Wiki_letter_w_cropped.svg){kind=small} | This section needs expansion. You can help by adding to it. (March 2010) |
The portion of SR 30 between I-215 and SR 259 did not exist in the 1960s-1970s, and traffic used SR 259, which was then designated as SR 30. Prior to its role as a state highway, the route followed by SR 259 formed a portion of the Santa Fe "Kite-Shaped Track" which looped throughout Southern California, including through communities of the eastern San Bernardino Valley.[13]
The entire route is in San Bernardino, San Bernardino County.
| mi[14] | km | Exit[14] | Destinations | Notes | |
|---|---|---|---|---|---|
| 0.00 | 0.00 |  I-215 south (San Bernardino Freeway) – Riverside | No access to I-215 north; southern terminus; I-215 exit 45; former I-15E | ||
| 45[lower-alpha 1] | Base Line Street | Southbound exit and northbound entrance | |||
| 1.45 | 2.33 | 1A | Highland Avenue | Signed as exit 1B southbound | |
| 1.50 | 2.41 | 1B | E Street | Northbound exit and southbound entrance; former SR 206 | |
 SR 210 east (Foothill Freeway) – Highland | No access to SR 210 west; northern terminus; future I-210; SR 210 west exit 75B | ||||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||
- California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
- San Bernardino County Road Atlas (Map). Thomas Brothers. 2008.
- "Westbound SR 210 Exit 75B: To I-215 south". Google Street View. May 2022. Retrieved January 25, 2023.
- "Northbound I-215 Exit 45: To SR 210 east". Google Street View. August 2022. Retrieved January 25, 2023.
- "Southbound I-215 (SR 259) freeway entrance from Highland Avenue". Google Street View. May 2022. Retrieved January 25, 2023.
- "Eastbound I-210 (SR 259) freeway entrance from Highland Avenue". Google Street View. April 2022. Retrieved January 25, 2023.
- "Northbound SR 259 Exit 1A: Highland Avenue". Google Street View. May 2022. Retrieved January 25, 2023.
- "SR 259 reassurance marker on westbound SR 210 Exit 75B ramp". Google Street View. May 2022. Retrieved January 25, 2023.
- "SR 259 reassurance marker on northbound I-215 Exit 45 ramp". Google Street View. May 2022. Retrieved January 25, 2023.
- "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: Riverside–San Bernardino, CA (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved September 3, 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.
- "USGS San Bernardino North 1954 1955". USGS San Bernardino North 1954 1955 Map 1:24000. Retrieved January 25, 2023.
- Warring, KS (January 12, 2009). "State Route 259 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Retrieved September 1, 2014.
