California State Route 92

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State Route 92

J. Arthur Younger Freeway
Defined by S&HC § 392, maintained by Caltrans

Length:

27.02 mi^[1] (43.48 km)

Formed:

1964 renumbering^[2]

West end:

SR 1 in Half Moon Bay

Major
junctions:

US 101 in San Mateo

East end:

SR 185 / SR 238 in Hayward

State highways in California (list - pre-1964)
County routes in California (list)
< SR 91		SR 94 >
History - Unconstructed - Deleted - Freeway - Scenic

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State Route 92

SR 92 over the Coast Range

State Route 92 is an east-west highway in the San Francisco Bay Area between Half Moon Bay near the coast (and State Route 1) in the west and downtown Hayward at its junction with State Route 238 and State Route 185. It has interchanges with three freeways: Interstate 280 (the Junipero Serra Freeway), U.S. Route 101 (the Bayshore Freeway) in or near San Mateo, and Interstate 880 (the Nimitz Freeway). It also connects indirectly to Interstates 238 and 580 by way of Hayward's Foothill Boulevard, which carries Route 238 and flows directly into Route 92.

Between Half Moon Bay and Interstate 280, Route 92 winds through the Coast Range as a narrow, mainly undivided two and three lane highway with a switchback turn. The east-bound uphill portion was upgraded with a long passing lane. Between Interstate 280 and Interstate 880 it is entirely a divided multilane highway, including the toll San Mateo-Hayward Bridge, the longest span across the San Francisco Bay. East of Interstate 880 the route becomes a divided surface street in Hayward, locally known as Jackson Street.

All of Route 92 that is not already a freeway or a toll bridge has been proposed as a freeway, none of which has been built. An upgrade of the intersection with Main Street in Half Moon Bay is in the late planning stage, and a grade separation at the route's Hayward terminus is planned.

This route is part of the California Freeway and Expressway System^[3] and is eligible for the State Scenic Highway System^[4].

Major cities Bolded cities are officially-designated control cities for signs
Half Moon Bay (westbound) San Mateo Foster City Hayward (eastbound)

1 History
2 Major intersections and exit list
3 Environmental factors
4 References
5 External links

[edit] History

The San Mateo section was once referred to as the 19th Avenue Freeway which was the street name where the freeway now exits. Parts of the street remain. This section is also known as the J. Arthur Younger Freeway. [1]

[edit] Major intersections and exit list

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 numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County	Location	Postmile ^[5]^[6]^[7]	#^[8]	Destinations	Notes
San Mateo SM 0.00-R18.80	Half Moon Bay	0.00		SR 1 – San Francisco, Santa Cruz
	Half Moon Bay	0.20		Main Street – Downtown Half Moon Bay	Former SR 1
		5.19		SR 35 south (Skyline Boulevard) – Big Basin	West end of SR 35 overlap
		7.19		SR 35 north (Skyline Boulevard) – San Francisco	East end of SR 35 overlap
				Cañada Road
	West end of freeway
		R7.31	8	I-280 (Junipero Serra Freeway) – San Francisco, San Jose	Signed as exits 8A (south) and 8B (north) eastbound
	San Mateo	R7.93	9A	Ralston Avenue – Belmont	Former Legislative Route 214
		R8.67	9B	De Anza Boulevard, Polhemus Road
		R9.38	10	West Hillsdale Boulevard
		R10.56	11	Alameda de las Pulgas
		R11.21	12	SR 82 (El Camino Real)	Signed as exits 12A (south) and 12B (north)
		R11.61	12C	Delaware Street
		R12.14	13	US 101 (Bayshore Freeway) – San Francisco, San Jose	Signed as exits 13A (south) and 13B (north)
	Foster City	R12.78	14A	Mariners Island Boulevard, Edgewater Boulevard
		R13.61	14B	Foster City Boulevard, East Hillsdale Boulevard
		San Mateo-Hayward Bridge over San Francisco Bay
Alameda ALA R0.00-8.22	Hayward	San Mateo-Hayward Bridge over San Francisco Bay
		R4.48	24	Clawiter Road, Eden Landing Road
		R5.12	25A	Industrial Boulevard
		R5.76	25B	Hesperian Boulevard – San Lorenzo
		6.39	26	I-880 (Nimitz Freeway) – San Jose, Oakland	Signed as exits 26A (south) and 26B (north)
		East end of freeway
		6.78		Santa Clara Street
		8.22		SR 185 / SR 238 south (Mission Boulevard)
		8.22		SR 238 north (Foothill Boulevard) to I-580

[edit] Environmental factors

State Route 92 traverses through significant habitat areas including wetland, California oak woodland, chaparral and grassland. In one serpentine soil location near Crystal Springs Reservoir, it passes near one of the only known colonies of the endangered wildflower Pentachaeta bellidiflora and near one of the limited number of colonies of the endangered Eriophyllum latilobum.