California State Route 238

From Wikipedia, the free encyclopedia
Jump to: navigation, search

State Route 238 marker

State Route 238
Route information
Defined by S&HC § 538
Maintained by Caltrans
Length: 14.393 mi[2] (23.163 km)
Existed: July 1, 1964[1] – present
Major junctions
South end: I‑680 in Fremont
  SR 92 / SR 185 in Hayward
North end: I‑238 / I‑580 in Castro Valley
Highway system
I-238 SR 241

State Route 238 (SR 238) is a north–south highway in the U.S. state of California. The route is a divided multilane surface highway in the southeastern part of the San Francisco Bay Area. SR 238 connects Interstate 580 in Castro Valley and Interstate 680 in Fremont.

Route description[edit]

SR 238 goes through Hayward and Union City parallel to the Hayward hills. It formerly contained a segment of east–west freeway now designated as Interstate 238 and, until Interstate 680 was completed in the area and supplanted it completely as a through route, extended to San Jose, California at its intersection with U.S. Route 101. Locally it is designated Mission Boulevard from I-680 to the intersection with State Route 92 and State Route 185 (which continues as Mission Boulevard). It is designated as Foothill Boulevard in northern Hayward from A Street to I-580.

In Downtown Hayward immediately north of SR 92, northbound traffic continues along the original SR 238 alignment on Foothill Boulevard, while southbound traffic is diverted onto A Street and Mission Boulevard. This loop of one-way streets is known as the "Hayward Loop".[3]

Mission Boulevard[edit]

"Mission Boulevard (East Bay, California)" redirects here. For the southern segment connecting I-880 and I-680, see California State Route 262.

Mission Boulevard, the former El Camino Viejo and El Camino Real, is the road that passes in front of Mission San José, the historic Spanish Mission founded in 1797, for which the road is named. Mission Boulevard proceeds in both directions from the Mission, but mainly northwest (the former El Camino Viejo) through Fremont, Union City, and Hayward. At the north end of Hayward it changes its name to East 14th Street, which continues as a major thoroughfare going through San Leandro and Oakland. Since it runs along the base of the hills, Mission Boulevard nearly coincides with the Hayward Fault, a major earthquake fault, for almost the entire length of the Boulevard. The southern direction from the Mission San José is the former El Camino Real route to Mission Santa Clara de Asís.

Mission Boulevard joins the historic centers of the Mission San Jose and Niles districts of Fremont (formerly independent towns), the Decoto district of Union City (formerly an independent town), and Hayward.

History[edit]

See also: Interstate 238

Before California massively renumbered its state highways in 1964, SR 238 was part of State Route 9. The segment of what is now Interstate 238 was built as a freeway in 1956,[4] before it became part of the Interstate Highway System in 1983.[5]

For several decades, SR 238 from Hayward to Fremont was also planned to be upgraded to a freeway, called the "Mission" or "Foothill" freeway.[1] It was submitted to the Interstate Highway System in October 1968 but was rejected.[5] Then after a series of lawsuits and appeals, Caltrans had to abandon the project in 2004 and sell off the property it had acquired in the name of eminent domain along the proposed route.[1]

As an alternative, SR 238 is proposed to be expanded from two lanes in each direction to three lanes in each direction along the majority of its width. Various other improvements began in July 2010,[6] followed by the California legislature relinquishing control of SR 238 within Hayward to local control in 2012.[1] In March 2013, the routing in Downtown Hayward was changed to include a one way circulation known as the "Hayward Loop", designed to improve traffic flow between SR 238, SR 185 and SR 92.[3]

Major intersections[edit]

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, and T indicates postmiles classified as temporary.[2] The entire route is in Alameda County.

Location Postmile
[2][7][8]
Destinations Notes
Fremont 0.00 Mission Boulevard Continuation beyond I-680
0.00 I‑680 – San Jose, Sacramento Interchange
3.31 SR 84 west (Mowry Avenue) – Centerville District, Newark, Dumbarton Bridge South end of SR 84 overlap
3.64 SR 84 east (Niles Canyon Road) / Niles Boulevard – Sunol, Livermore, Niles District North end of SR 84 overlap
Union City 6.78 Decoto Road – Decoto District, Dumbarton Bridge
Hayward 9.32 I-880 (CA).svg Alquire Parkway, Industrial Parkway to I-880 North end of state maintenance
9.94 Tennyson Road
11.20 I-880 (CA).svgCalifornia 92.svg Harder Road to I-880 / SR 92 – San Mateo Bridge
12.61 SR 92 (Jackson Street) to I‑880 – San Mateo Bridge, San Mateo, San Jose No northbound access
12.61 SR 185 (Mission Boulevard) Northbound access is via a left turn on A Street
13.12 A Street No left turn from SR 238 south
Hayward–
Castro Valley line
  South end of state maintenance
Castro Valley 14.29 Castro Valley Boulevard, Mattox Road Interchange northbound and at-grade intersection southbound
R14.47 I‑580 (MacArthur Freeway) – Oakland, Stockton Interchange; northbound exit and southbound entrance
R14.47 I‑238 to I‑880 Interchange; northbound exit and southbound entrance
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References[edit]