California State Route 238

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State Route 238
(CS&HC Section 538)
Length:	14.54 mi[1] (23.4 km)
Formed:	July 1, 1964[2]
South end:	I-680 in Fremont
Major junctions:	SR 92/185 in Hayward
North end:	I-238/I-580 in Castro Valley
Major cities:	Fremont Union City Hayward Castro Valley
California State Routes < I-238 SR 239 > Unconstructed - Deleted - Freeway - Scenic

California State Route 238 is a north-south highway in the southeastern part of the San Francisco Bay Area, USA. A divided multilane surface highway, it connects Interstate 580 in Castro Valley, California and Interstate 680 in Fremont, California.

Contents 1 Route description 2 History 3 Future 4 Major intersections 5 State law 6 References

[edit] Route description

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 José, 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), then from that intersection to I-580 as Foothill Boulevard.

[edit] History

Before California massively renumbered its state highways in 1964, this highway was part of State Route 9. It was long scheduled for replacement by a freeway.

[edit] Future

Route 238 is proposed to be expanded from two lanes in each direction to three lanes in each direction along the majority of its width. Changes proposed also include a one way circulation through Central Hayward, and various improvements to traffic signals and closure of minor streets intersecting with Route 238. ^[3]

[edit] Major intersections

County	Location	Mile	Road(s)	Notes
Alameda	Fremont	0.00	I-680
			Driscoll Road/Castro Lane
			Stevenson Boulevard	Eastern terminus.
		3.31	SR 84 Mowry Avenue	SR 84 splits west toward the Dumbarton Bridge.
		3.64	SR 84 Niles Canyon Road	SR 84 splits east toward Livermore.
	Union City		Decoto Road	Eastern terminus.
			Whipple Road/May Road
	Hayward		Industrial Parkway
			Tennyson Road	Eastern terminus.
			Harder Road
		12.61	SR 92/ SR 185 Jackson Street/Mission Boulevard/E Street	Southern terminus of SR 185. Eastern terminus of SR 92. SR 238 continues as Foothill Boulevard.
			A Street
	Castro Valley	14.54	I-238/ I-580
becomes

Legend
Crossing, no access	Concurrency termini	Decommissioned	Unconstructed	Closed

[edit] State law

Route 238 is part of the Freeway and Expressway System, as stated by section 253.1 of the California State Highway Code.

[edit] References

1. ^ January 1, 2006 California Log of Bridges on State Highways
2. ^ California Highways: Interstate 238
3. ^ Route 238 Corridor Improvement Project