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California State Route 237: Map


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State Route 237 runs from El Camino Real (SR 82) in Mountain Viewmarker to Interstate 680 in Milpitasmarker. It runs south of the San Francisco Baymarker, connecting the East Bay to the Peninsula.

This route is part of the California Freeway and Expressway System.

Route description

It intersects with Highway 101 at the southern corner of Moffett Fieldmarker. It also has a major intersection with Interstate 880. Westbound traffic can connect to Highway 85 southbound, but the eastbound traffic connection to 85 northbound is labeled as an exit for U.S. 101.

Half a mile from the highway's western terminus, to the I-880 intersection, Route 237 is constructed to Interstate standards, and is named the Southbay Freeway. It is not part of the Interstate system, however, despite a sign on the ramp to it from Northbound I-680 to the contrary. East of I-880 in Milpitas, it becomes a surface street, Calaveras Boulevard, and the highway designation terminates at the intersection with I-680. West of El Camino Real in Mountain View, it becomes a surface street, Grant Road.

Route 237 is known for the many Silicon Valleymarker companies that line its route.

Before Route 237 was upgraded to freeway status in the mid-1990s, it was a 4-6 lane street, known as Alviso-Milpitas Road or Milpitas-Alviso Road depending on different maps showing the description.

The Route 237 corridor has long been sought as a location for a freeway connector between Interstates 680 and 880. Many possible sites have been suggested, from Montague Expressway in North San Josemarker to Mission Boulevard in Fremontmarker. One map printed before 237's construction to freeway standards between Alvisomarker and 880 showed a new freeway across bay wetlands between Alviso and the Scott Creek Road interchange in South Fremont. Grading and underpasses for a freeway interchange are presently visible along 680 near Scott Creek Road. [76279]

Route 237 is known for a number of companies that define Silicon Valleymarker's technological landscape. Many major software and hardware manufacturers have their headquarters along 237. Some of these manufacturers include Lockheed-Martin, Foundry Networks, Nortel Networks, Cisco Systems, Yahoo!, TiVo and Ariba.

Route 237 also passes Moffett Federal Airfieldmarker, a large former military air base in the Bay Area, and Onizuka Air Force Stationmarker, locally known as the blue cube.

Highway 237 Bikeway

The Highway 237 Bikeway is a pedestrian and bicycle path that parallels State Route 237. The majority of the path is separated from vehicular traffic, however, two sections comprising a total of follow an on-street alignment adjacent the freeway.

This bikeway serves as an important connector in the network of trails in San Josemarker and Santa Clara Countymarker. It intersects with the Guadalupe River Trail, which provides access to Downtown San Josemarker, as well as the San Tomas Aquino Creek and Coyote Creek trails.

Major intersections

Note: Except where prefixed with a letter, postmiles were measured in 1964, based on the alignment as it existed at that time, and do not necessarily reflect current mileage.
The entire route is in Santa Clara Countymarker.

Location Postmile

# Destinations Notes
Mountain Viewmarker R0.00 Grant Road Continuation beyond SR 82
R0.00 1A
West end of freeway
R0.38 1A Eastbound exit and westbound entrance
R0.38 1B Westbound exit and eastbound entrance
R0.61 1B Dana Street, Evelyn Avenue, Whisman Road Signed as exit 1C westbound
M1.55 2 Middlefield Road, Maude Avenue
Sunnyvalemarker 2.48 3A Westbound exit is via exit 3B
2.48 3A Eastbound exit is via exit 3B
2.99 3B Mathilda Avenue – Sunnyvalemarker Former SR 9 south
R3.97 4 Fair Oaks Avenue Eastbound exit and westbound entrance
R4.60 5 Lawrence Expressway (CR G2), Caribbean Drive
Santa Claramarker R5.83 6 Great America Parkway, Lafayette Street
San Josemarker 6.87 7 North First Street
8.02 8 Zanker Road
Milpitasmarker R9.13 9A McCarthy Boulevard
9.34 9 Signed as exits 9B (south) and 9C (north)
East end of freeway
Serra Way to Main Street
Abel Street to Main Street
10.00 10 Main Street Interchange; westbound exit and eastbound entrance; former SR 238
Milpitas Boulevard
11.08 11 Interchange; signed as exits 11A (south) and 11B (north)
11.08 Calaveras Boulevard Continuation beyond I-680

See also


  1. CA Codes (shc:250-257)
  2. California Department of Transportation, State Truck Route List (XLS file), accessed February 2008
  3. California Department of Transportation, Log of Bridges on State Highways, July 2007
  4. California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
  5. California Department of Transportation, California Numbered Exit Uniform System, SR-237 Eastbound and SR-237 Westbound, accessed February 2008

External links

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