- California State Route 92
Route information Defined by S&HC § 392 Maintained by Caltrans Length: 27.769 mi (44.690 km) Existed: 1964 – present Major junctions West end: SR 1 in Half Moon Bay I-280 near San Mateo
US 101 in San Mateo
I-880 in Hayward
East end: SR 185 / SR 238 in Hayward Highway system ← SR 91 SR 94 →
State Route 92 (SR 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 is most notable for being the route that traverses the San Mateo Bridge. 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. The old cloverleaf interchange with Interstate 880 was rebuilt with direct ramp replacements for two of the tight "cloverleaf" ramps, and a new wider and taller overpass to carry Route 92 over Interstate 880. The project took four years, and was completed in October 2011.
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.
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. 
- 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
Destinations Notes San Mateo
Half Moon Bay 0.00 SR 1 – San Francisco, Santa Cruz 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
Hayward 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) – Oakland, San Jose Signed as exits 26A (south) and 26B (north) East end of freeway 6.78 Santa Clara Street 8.22 SR 185 / SR 238 (Mission Boulevard, Foothill Boulevard) to I-580 Serves CSU East Bay 1.000 mi = 1.609 km; 1.000 km = 0.621 mi
Concurrency terminus • • Closed/Former • Incomplete access Unopened
- ^ Faigin, Daniel P. "County Highways - State Route 92". www.cahighways.org. http://cahighways.org/089-096.html#092. Retrieved 2008-07-21.
- ^ a b California Department of Transportation, State Truck Route List (XLS file), accessed January 2008
- ^ CA Codes (shc:250-257)
- ^ CA Codes (shc:260-284)
- ^ "Officially Designated State Scenic Highways and Historic Parkways". California Department of Transportation. December 7, 2007. http://www.dot.ca.gov/hq/LandArch/scenic_highways/. Retrieved June 23, 2011.
- ^ http://www.mercurynews.com/breaking-news/ci_19067123
- ^ California Department of Transportation, Log of Bridges on State Highways, July 2007
- ^ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
- ^ California Department of Transportation, California Numbered Exit Uniform System, State Route 92 Freeway Interchanges, Retrieved on 2009-02-07.
San Francisco Bay Area FreewaysItalics denote former routes. Interstates and U.S. Routes
I-80 (James Lick / Eastshore / San Francisco Skyway) · US 101 (South Valley / Bayshore / Redwood Highway / Central) · I-238 · I-280 (Junipero Serra / Southern / Sinclair) · I-380 (Kopp) · CA 480 (Embarcadero) · I-580 (MacArthur) · I-680 (Sinclair) · I-780 · I-880 (Nimitz Freeway) · I-980 (Grove-Shafter)
California State RoutesCA 1 (Cabrillo Highway) · CA 4 (John Muir Parkway) · CA 12 (Burbank Freeway) · CA 13 (Warren Freeway) · CA 17 (Santa Cruz Highway) · CA 24 (Grove-Shafter Freeway) · CA 29 (Vallejo-Napa Freeway) · CA 37 (Sears Point Freeway/Marine World Parkway) · CA 84 (Dumbarton Bridge) · CA 85 (West Valley Freeway) · CA 87 (Guadalupe Freeway) · CA 92 (San Mateo-Hayward Bridge/Younger Freeway) · CA 160 (Antioch Bridge) · CA 237 (South Bay Freeway) · CA 242 (Concord Freeway) Named interchanges Bridges See also
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