Interstate 80 in California

Major cities; Bolded cities are officially-designated control cities for signs
	San Francisco (westbound); Oakland; Berkeley; Richmond; Vallejo; Fairfield; Vacaville; Davis; Sacramento; Truckee; Reno, Nevada (eastbound);

	Interstate 80; Main route of the Interstate Highway System
	James Lick Freeway, Eastshore Freeway, Lincoln Highway, Alan S. Hart Freeway; Defined by S&HC § 380, maintained by Caltrans
Length:	207.554 mi (334.026 km)
Formed:	August 7, 1947 by FHWA; June 26, 1956; July 1, 1964 by Caltrans
West end:	US 101 in San Francisco
Major; junctions:	I-580 / I-880 in Oakland; I-505 in Vacaville; I-5 in Sacramento; SR 49 in Auburn; SR 89 in Truckee
East end:	I-80 at Nevada state line
	State highways in California (list - pre-1964)
< SR 79	SR 82 >
	History - Unconstructed - Deleted - Freeway - Scenic

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In the U.S. state of California, Interstate 80, a major east-west route of the Interstate Highway System, has its western terminus in San Francisco, California, United States. From San Francisco it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge before turning back northeast and east through Sacramento Valley. I-80 then goes over Sierra Nevada mountain range and crosses into Nevada state.

[edit] Route description

[edit] West end in San Francisco

The western terminus of Interstate 80 in San Francisco, viewed from northbound US 101.

According to signage, I-80 begins at its intersection with U.S. Route 101 in San Francisco. However, the San Francisco Skyway is not part of the Interstate Highway System; the Interstate actually begins at the west end of the Bay Bridge, at the ramps formerly connecting to the Embarcadero Freeway. Thus the first 1.20 miles (1.93 km) of the signed Interstate are not an actual Interstate.^[4]^[5]

When I-80 was first approved, it was to head north on the Central Freeway (US 101) and west on the never-built Panhandle Freeway, ending at planned I-280 (CA 1) in Golden Gate Park. A January 1968 amendment moved I-280 to its present alignment, removed Interstate 480, and truncated I-80 to the Embarcadero Freeway (then I-280, formerly I-480).^[2] These changes were made on the state level later that year, but Route 80 was only truncated to US 101. (The Central Freeway remained part of US 101, and the Panhandle Freeway became State Route 241. The Panhandle Freeway was later cancelled in the wake of the Freeway Revolts, and the State Route 241 designation has since been reassigned to an unrelated stretch of highway in Orange County) The San Francisco Skyway, which had already been signed as part of I-80, has remained a de facto section of Interstate 80 to the present day and remains listed as part of Interstate 80 in California.

Main article: Eastshore Freeway

The Eastshore Freeway is a segment of Interstate Highways 80 and 580 which runs along the northeast shoreline of San Francisco Bay in northern California. It begins at the Carquinez Bridge and ends at the MacArthur Maze interchange just east of the western end of the San Francisco – Oakland Bay Bridge. Interstate 580 joins the Eastshore Freeway at an interchange in Albany.

[edit] Sacramento portion

Main article: Interstate 880

Main article: Interstate 80 Business (Sacramento, California)

Legislative Route 242 was defined in 1957, connecting pre-1964 Legislative Route 6 west of Sacramento to pre-1964 Legislative Route 3 northeast of Sacramento.^[6] Interstate 880, a bypass of I-80, was approved along Legislative Route 242 by the American Association of State Highway Officials on November 10, 1958.^[2] The Route 880 designation was adopted by the state in the 1964 renumbering; the bypass was completed in 1972.

Interstate 80 has run north of Sacramento on the Beltline Freeway which was originally Interstate 880, a bypass freeway. The I-80 routing alignment was moved from a route through Sacramento, now Interstate 80 Business, after the proposed Interstate 80 replacement of the North Sacramento Freeway was cancelled. The Beltline Freeway runs northeast from the junction of I-80 and I-80 Business (U.S. Route 50 there) in West Sacramento across Interstate 5 to its junction northeast of Sacramento with I-80 Business (which is State Route 51). State Route 244 heads east as a short freeway spur from that interchange.

I-80 in the Sierra Nevada near the Yuba Gap exit

Rest area at Donner Summit, Westbound. Symmetrical one is also placed at Eastbound

[edit] Sierra Nevada portion

Crossing the Sierra Nevada, I-80 regularly gets snow at higher elevations from fall to spring. Caltrans sometimes requires vehicles to use snow tires, snow chains or other traction devices in the mountains during and after snowstorms.^[7] Checkpoints are often utilized to enforce chain restrictions prior to entering icy or snowy portions of the interstate.

I-80 crosses the Sierra Nevada crest at the Donner Summit also known as Euer Saddle at the elevation 7,239 feet (2,206 m) westbound and 7,227 feet (2,203 m) eastbound.^[8] The summit is located in Nevada County (California state). The pass is generally open year-round; it is plowed in winter, but may temporarily close during the worst snowstorms. The older route over Donner Pass is about two miles (3 km) south. Albeit Donner Pass is lower, Euer Saddle was chosen for the interstate because of more gradual approaches. Portions of I-80 through the Sierra-Nevada mountain range are really rough, and the road is badly cracked.^{[citation needed]}

[edit] Other names

The following are some of the names assigned to Interstate 80, as designated by various state laws:^[9]

Alan S. Hart Freeway: from the Sacramento/Placer County line to the Nevada state line.
Dutch Flat and Donner Lake Wagon Road: from Emigrant Gap to Donner Lake.
Lincoln Highway: from Sacramento to Reno.
Kent D. Pursel Memorial Freeway: from the Bay Bridge to the Alameda/Contra Costa County line.
Linus F. Claeys Freeway: from SR 4 to the Carquinez Bridge.
Dwight D. Eisenhower Highway: for its entire length.
East-West Blue Star Memorial Highway: for its entire length.

[edit] 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 some county lines; the start and end postmiles in each county are given in the county column.

County	Location	Postmile ^[1]^[10]^[11]	#^[12]	Destinations	Notes
San Francisco SF 3.84-8.85		3.84	1	US 101 (James Lick Freeway, Central Freeway) – San Jose, Golden Gate Bridge	Westbound exit and eastbound entrance; signed as exits 1A (south) and 1B (north)
			1C	Ninth Street – San Francisco Civic Center	Signed as exit 433C northbound
		4.40	1	Seventh Street	Eastbound exit and westbound entrance
		5.45	2A	Fifth Street	Westbound exit and eastbound entrance
		5.45	2	Fourth Street, Embarcadero	Eastbound exit and westbound entrance
		5.59	2B	Harrison Street, Embarcadero	Westbound exit and eastbound entrance; former SR 480
		5.59	2C	Fremont Street, Folsom Street	Westbound exit and eastbound entrance; former SR 480
		San Francisco – Oakland Bay Bridge (west span) over San Francisco Bay
		7.72	4A	Treasure Island	Westbound exit is via exit 4
		7.72	4B	Yerba Buena Island	Signed as exit 4 westbound
		San Francisco – Oakland Bay Bridge (east span) over San Francisco Bay
Alameda ALA 0.00-8.04	Oakland
		2.51	8A	West Grand Avenue, Maritime Street
		2.80	8A	I-880 south (Nimitz Freeway) – Alameda, San Jose	Westbound exit is part of exit 8B
		2.80	8B	I-580 east (MacArthur Freeway) to SR 24 – Downtown Oakland, Hayward, Stockton	West end of I-580 overlap; westbound exit and eastbound entrance
	Emeryville	3.79	9	Powell Street – Emeryville	No eastbound exit from I-880 north
	Berkeley	4.58	10	SR 13 (Ashby Avenue) / Shellmound Street	Shellmound Street from eastbound only
		5.82	11	University Avenue – Berkeley	Serves UC Berkeley
		6.62	12	Gilman Street
	Albany	R7.30	13A	Buchanan Street – Albany	Signed as exit 13 westbound
		R7.30	13B	I-580 west – Point Richmond, San Rafael	Eastbound exit and westbound entrance; east end of I-580 overlap
				Pierce Street	Former eastbound exit and entrance before reconstruction of I-80 / I-580 interchange
Contra Costa CC 0.00-14.14	Richmond	0.22	14A	Central Avenue – El Cerrito
	Richmond	1.00	14B	Carlson Boulevard
	El Cerrito	1.67	15	Potrero Avenue	Eastbound exit and westbound entrance
	Richmond	2.04	15	SR 123 (Cutting Boulevard)	Westbound exit and eastbound entrance
		2.62	16A	Macdonald Avenue	Eastbound exit and westbound entrance
		2.96	16B	San Pablo Avenue, Barrett Avenue	Signed as exit 16 westbound; Barrett Avenue formerly signed as Central Richmond
		3.41	17	Solano Avenue	Eastbound exit and westbound entrance
		3.80	17	McBryde Avenue	Westbound exit only
	San Pablo	4.34	18	San Pablo Dam Road
		5.25	19A	El Portal Drive
	Richmond	5.98	19B	Hilltop Mall, Auto Plaza	Formerly signed as Hilltop Drive
	Pinole	6.60	20	Richmond Parkway, Fitzgerald Drive to I-580 west	Unconstructed SR 93
		7.60	21	Appian Way
		8.51	22	Pinole Valley Road
	Hercules	10.06	23	SR 4 east – Stockton	No westbound exit
		10.06	23	Hercules
		10.69	24	Willow Avenue – Rodeo
		12.75	26	Cummings Skyway to SR 4 east – Martinez, Concord
		13.49	27	Pomona Street – Crockett, Port Costa
		14.14	Carquinez Bridge over Carquinez Strait
Solano SOL 0.00-6.81	Vallejo	14.14	Carquinez Bridge over Carquinez Strait
		1.14	29A	SR 29 (Sonoma Boulevard)	Eastbound exit and westbound entrance
			29A	Maritime Academy Drive	Westbound exit and entrance
			29B	Sequoia Avenue	Eastbound exit only
		1.78	29C	Magazine Street	Signed as exit 29B westbound
		2.23	30A	I-780 to I-680 / Curtola Parkway – Benicia, Martinez
		2.44	30B	Frontage road (to Benicia Road)	Eastbound exit only; former SR 141
		2.88	30C	Georgia Street – Central Vallejo	Signed as exit 30B westbound
		3.23	31A	Springs Road, Solano Avenue
		3.49	31B	Tennessee Street – Mare Island
		4.43	32A	Redwood Parkway, Redwood Street	Signed as exits 32A (east) and 32B (west) eastbound
		5.63	33	SR 37 west / Auto Mall Columbus Parkway – Napa, San Rafael, Novato	Signed as exits 33A (Auto Mall Columbus Parkway) and 33B (SR 37) westbound
Napa NAP 6.81-8.00	No interchanges in Napa County
Solano SOL 8.00-R44.72		8.10	36	American Canyon Road, Hiddenbrooke Parkway
	Fairfield	R11.39	39A	Red Top Road	Signed as exit 39 eastbound
		R11.98	39B	SR 12 west – Napa, Sonoma	West end of SR 12 overlap; eastbound exit is via exit 39
		12.74	40	Green Valley Road	Westbound exit is part of exit 41
		12.84	40	I-680 south – Benicia, Martinez, San Jose
		13.49	41	Suisun Valley Road, Pittman Road
		15.82	43	SR 12 east – Suisun City, Rio Vista	East end of SR 12 overlap; westbound exit is via exit 43
		16.17	44A	Abernathy Road	Signed as exit 43 westbound
		17.20	44B	West Texas Street, Rockville Road – Fairfield	Signed as exit 44 westbound
		17.92	45	Travis Boulevard
		19.18	47	Waterman Boulevard, Air Base Parkway – Travis AFB	Signed as exits 47A (Air Base Parkway) and 47B (Waterman Boulevard) westbound
		20.93	48	North Texas Street – Fairfield
		23.13	51A	Lagoon Valley Road, Cherry Glen Road
	Vacaville	23.96	51B	Peña Adobe Road
			52	Cherry Glen Road	Westbound exit only
		R25.31	53	Alamo Drive, Merchant Street
		R26.01	54A	Davis Street
		R26.46	54B	Peabody Road, Mason Street – Elmira
		R27.24	55	Monte Vista Avenue, Allison Drive, Nut Tree Parkway
		R28.36	56	I-505 north – Winters, Redding
		29.86	57	Leisure Town Road, Vaca Valley Parkway
		31.36	59	Meridian Road, Weber Road
		32.62	60	Midway Road, Lewis Road
	Dixon	35.55	63	Dixon Avenue, West A Street – Dixon
		36.90	64	Pitt School Road
		38.21	66A	SR 113 south (First Street) / Currey Road – Dixon	West end of SR 113 overlap; signed as exit 66 eastbound
			66B	Milk Farm Road	Westbound exit only
		39.74	67	Pedrick Road (CR E7)
		41.30	69	Kidwell Road
		42.67	70	SR 113 north (Vic Fazio Highway) – Woodland	East end of SR 113 overlap
		43.50	71	UC Davis (Old Davis Road)
Yolo YOL 0.00-R11.72	Davis	0.24	72	Richards Boulevard – Downtown Davis	Signed as exits 72A (south) and 72B (north) westbound
		0.84	73	Olive Drive	Westbound exit only
		2.68	75	Mace Boulevard (CR E6)
		5.78	78	Road 32A, East Chiles Road
	Yolo Causeway over Yolo Bypass
	West Sacramento	9.18	81	West Capitol Avenue, Enterprise Boulevard – West Sacramento
		R9.91	82	I-80 Bus. east (Capital City Freeway) / US 50 east (El Dorado Freeway) – Sacramento, South Lake Tahoe	Former I-80 east
		R11.23	83	Reed Avenue (SR 84) – West Sacramento
Sacramento SAC M0.00-18.00	Sacramento	M1.36	85	West El Camino Avenue
		M2.55	86	I-5 to SR 99 – Sacramento, Los Angeles, Redding
		M3.64	88	Truxel Road
		M4.98	89	Northgate Boulevard
		M6.12	90	Norwood Avenue
		M7.63	91	Raley Boulevard, Marysville Boulevard – Del Paso Heights
		M8.67	92	Winters Street
		M9.40	93	Longview Drive
			94	Light Rail Stations (Roseville Road, Watt/I-80 West, and Watt/I-80)	Westbound left exit and eastbound left entrance; also accessible as part of exit 93 westbound
		M10.36	94A	Watt Avenue	Westbound exit is part of exit 95
		R10.99	94B	Auburn Boulevard (SR 244)	Westbound exit is part of exit 95
		R10.99	95	I-80 Bus. west (Capital City Freeway) to SR 99 south – Sacramento	Westbound exit and eastbound entrance; eastbound exit is part of exit 94A; former I-80 west
		12.48	96	Madison Avenue
		14.45	98	Greenback Lane, Elkhorn Boulevard (CR E14)
	Citrus Heights	16.69	100	Antelope Road
Placer PLA 0.00-R58.71	Roseville	0.27	102	Riverside Avenue, Auburn Boulevard – Roseville, Citrus Heights	Former US 40 / SR 65
		1.98	103	Douglas Boulevard, Sunrise Avenue (CR E2)	Signed as exits 103A (east) and 103B (west) eastbound
		3.07	105A	Atlantic Street, Eureka Road	Signed as exits 105A (Eureka Road) and 105B (Atlantic Street) westbound
		3.66	105B	Taylor Road, Pacific Street	Westbound exit is via exit 105A
		4.16	106	SR 65 – Lincoln, Marysville
	Rocklin	6.06	108	Rocklin Road
	Rocklin	7.42	109	Sierra College Boulevard (CR E3)
	Loomis	8.72	110	Horseshoe Bar Road – Loomis
		10.35	112	Penryn Road – Penryn
		13.81	115	Newcastle Road – Newcastle
		14.30	116	SR 193 west – Lincoln	West end of SR 193 overlap
	Auburn	16.85	118	Ophir Road	Westbound exit and eastbound entrance
		17.29	119A	Maple Street, Nevada Street – Auburn
		17.54	119B	SR 49 (SR 193 east) – Grass Valley, Placerville	East end of SR 193 overlap
		17.83	119C	Elm Avenue
		R18.91	120	Lincoln Way, Russell Road	No eastbound entrance
		R19.47	121	Auburn Ravine Road – Foresthill
		R20.13	122	Bowman
		R21.13	123	Bell Road
		R22.21	124	Dry Creek Road
		R23.43	125	Clipper Gap, Meadow Vista (Placer Hills Road)
		R26.21	128	Applegate
		27.39	129	Heather Glen
		28.59	130	West Paoli Lane
		29.32	131	Weimar Cross Road
	Colfax	31.79	133	Canyon Way, Placer Hills Road
	Colfax	33.13	135	SR 174 – Colfax, Grass Valley
		37.78	139	Rollins Lake Road, Magra Road
		38.35	140	Secret Town Road, Magra Road
		41.37	143	Magra Road – Gold Run
		42.19	144	Gold Run	Westbound exit and eastbound entrance
		43.17	145	Dutch Flat
		44.75	146	Alta
		46.31	148A	Crystal Springs
		46.94	148B	Baxter
		49.00	150	Drum Forebay Road
		53.36	155	Blue Canyon
		54.81	156	Nyack Road
		R56.06	158A	Emigrant Gap	Signed as exit 158 westbound
			158B	Laing Road	Eastbound exit only
Nevada NEV R58.71-R62.75		R58.84	160	Yuba Gap
		R59.54	161	SR 20 west – Nevada City, Grass Valley
		R62.03	164	Eagle Lakes Road
Placer PLA R62.75-69.77		R63.52	165	Cisco Grove (Cisco Road)
			166	Big Bend	Eastbound exit only
		R66.20	168	Rainbow Road – Big Bend
		69.23	171	Kingvale
Nevada NEV 0.00-31.78		R2.48	174	Soda Springs, Norden
		R5.07	176	Boreal Ridge Road – Castle Peak
		R9.01	180	Donner Lake (Donner Lake Road)
		13.21	184	Donner Pass Road
		14.16	185	SR 89 south – Tahoe City, Lake Tahoe, Squaw Valley	West end of SR 89 overlap
	Truckee	14.97	186	Central Truckee	No eastbound entrance
		16.29	188A	Truckee	Eastbound exit and westbound entrance
		16.60	188B	SR 89 north / SR 267 south – Sierraville, Lake Tahoe	East end of SR 89 overlap; signed as exit 188 westbound
		18.28	190	Overland Trail
		22.41	194	Hirschdale Road
		27.29	199	Floriston
		29.49	201	Farad
Sierra SIE 0.00-1.59	No interchanges in Sierra County