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U.S. Route 101
Santa Ana Freeway, Hollywood Freeway, Ventura Freeway, Bayshore Freeway, Central Freeway, Redwood Highway
Route information
Maintained by Caltrans
Length	808.09 mi (1,300.49 km)
Existed	1926–present
Major junctions
South end	I-5 / SR 60 in Los Angeles
Major intersections	SR 33 in Ventura SR 166 in Santa Maria SR 68 in Salinas I-880 in San Jose I-80 in San Francisco SR 20 near Ukiah SR 299 near Eureka
North end	US 101 towards Brookings, OR
Location
Country	United States
State	California
Highway system
United States Numbered Highway System List Special Divided State highways in California Interstate US State Scenic History Pre‑1964 Unconstructed Deleted Freeways
← SR 99 → SR 103

In the U.S. state of California, U.S. Route 101 (also known as Highway 101, The 101 in Southern California, and simply 101 in Northern California) is one of the last remaining and longest U.S. Routes still active in the state; and the longest highway of any kind in California. US 101 was also one of the original U.S. Routes established in 1926.

This route is part of the California Freeway and Expressway System.

Route description

Los Angeles to Ventura

The south terminus of U.S. Route 101 is in Los Angeles, about one mile (1.6 km) east of downtown Los Angeles at the East Los Angeles Interchange, also known as the "Commuters' Complex" or sometimes, "The Five Level". This southernmost portion is named the Santa Ana Freeway, inheriting that title as the northerly extension of the roadway now known as Interstate 5.

After merging with westbound traffic from the San Bernardino Freeway (I-10), U.S. Route 101 then proceeds northwest via the Downtown Slot under the northern edge of Los Angeles' Civic Center to State Route 110 at the Four Level Interchange. From here, U.S. 101 becomes the Hollywood Freeway. It then heads to Hollywood and up through the Cahuenga Pass before reaching the San Fernando Valley.

Highway 101 then intersects with State Route 134 and State Route 170 at the interchange known as the Hollywood Split. Here, the alignment of U.S. 101 'shifts' to the alignment of SR 134 (i.e. heading northbound, the road's alignment turns left, or westbound) and thereafter is referred to as the Ventura Freeway until it reaches Ventura. Confusingly, the "Hollywood Freeway" name continues northward from this interchange on SR 170, and the "Ventura Freeway" name continues eastward to SR 134.

From the Hollywood Split, U.S. 101 is an east-west highway until it reaches Gaviota State Park in Santa Barbara County where it shifts back to a north-south alignment. The east-west geographical alignment of the Ventura Freeway and the north-south designation on freeway signs can be confusing to visitors; the same freeway entrance can often be signed as "101 North" and "101 West"; this is most common in the San Fernando Valley.

Central Coast

North of Ventura, U.S. 101 is an intermittent freeway (i.e. there is occasional cross traffic) but there are no traffic signals until one arrives at San Francisco. The last traffic signals along this stretch of the highway were removed in the early 1990s when the section through downtown Santa Barbara was constructed after years of resistance from the Santa Barbara community.

From Ventura and through Santa Barbara, Highway 101 closely follows the Pacific coastline (generally no more than one to two miles (3 km) from the shore) until Gaviota State Park about 23 miles (37 km) west of Goleta. At Gaviota State Park, the highway shifts back from an east-west highway to a north-south alignment. About 1-mile (1.6 km) north of this point, U.S. 101 passes through the Gaviota Tunnel.

A few miles north of the Gaviota Tunnel, State Route 1 splits from U.S. 101 and heads northwest, running along the Pacific coastline in California, parallel and to the west of U.S. 101.

Farther north, State Route 1 rejoins the 101 for a section between Pismo Beach and San Luis Obispo. Then U.S. 101 takes an inland route through the Salinas Valley, while Highway 1 heads northwest, running along the Pacific coastline in California, parallel and to the west of U.S. 101.

A steep segment (7% grade) between San Luis Obispo and Atascadero is known as the Cuesta Grade. North of Atascadero, the highway joins State Route 46 (SR 46) for about three miles (5 km) through Paso Robles

From Paso Robles to Salinas, U.S. 101 is an expressway known as the Salinas River Valley Highway, since the Salinas River Valley extends from Santa Margarita to the State Route 156 (SR 156) Junction in Prunedale. The highway passes Camp Roberts, south of Bradley, and the huge San Ardo Oil Field about five miles (8 km) south of the town of San Ardo; this is near the point where the wide agricultural bottomlands of the Salinas Valley begin.

San Francisco Bay Area

When U.S. 101 reaches Gilroy, it becomes the South Valley Freeway, and it then heads through the suburb of Morgan Hill before reaching San Jose. From San Jose to San Francisco, Highway 101 is known as the Bayshore Freeway as it passes through Palo Alto and the other major communities along the San Francisco Peninsula. This segment was originally Bayshore Boulevard, later redesignated the 101A bypass and upgraded to freeway by the late 1950s. This section of 101 from San Jose north to San Francisco is very heavily-travelled. The stretch between Redwood City and South San Francisco was the Bay Area's first freeway when it opened in 1947; over the next 20 years the stretches from San Jose to Redwood City and South San Francisco to San Francisco were upgraded to freeway.

Highway 101 is called the James Lick Freeway, named for James Lick, a philanthropist, from the San Francisco county/city line, through the interchange with I-280 at the Alemany Maze, until the junction with the San Francisco Skyway (Interstate 80) and the Central Freeway near the city's Civic Center. Highway 101 continues in a northwestern direction on the Central Freeway, and then leaves the freeway to run north on Van Ness Avenue. At the intersection of Van Ness Avenue and Lombard Street, Highway 101 heads west on Lombard Street, and then on Richardson Avenue, entering The Presidio, where it becomes a divided highway again (known as Doyle Drive). It is then joined by Route 1 before approaching and crossing the Golden Gate Bridge.

From San Francisco north the highway is heavily traveled by commuters through to Windsor, just north of Santa Rosa. North of the Golden Gate Bridge, U.S. 101 enters Marin County and is known as the Redwood Highway. After crossing the bridge, U.S. 101 climbs the Waldo Grade and passes through the Waldo Tunnel, the first of its kind in 300 miles (the other being the Gaviota Tunnel in Santa Barbara County), before passing through San Rafael and Novato. The section between Novato in Marin County and Petaluma in Sonoma County changes from its original six or eight lanes through Marin to four lanes, and is thus called the "Novato Narrows" by locals. The entire area between Novato and Petaluma is also the voter approved Novato–Petaluma Community Separator, which forbids most development.

Upon entering Sonoma County it continues as a four lane freeway, which will be upgraded to six lanes by 2010. The interchange with State Route 12 is named the Grape Crush Interchange for California's Wine Country; like the Orange Crush Interchange in Southern California, it handles major traffic loads, which makes for traffic jams from 6:00 AM through to 8:00 PM. It proceeds up the Alexander Valley with the Russian River before leaving Sonoma County and entering Mendocino County.

North Coast

The freeway portion ends north of Cloverdale near the Mendocino County line, and it narrows to an expressway and eventually a two-lane road south of Hopland, the first time since leaving San Francisco. There are plans for a proposed bypass to the east of Hopland which would make US 101 from its inception in Los Angeles to Ukiah a four-lane road. In the community of Calpella, State Route 20 merges with US 101, where it will remain that way until reaching the city of Willits. South of Willits, US 101 ascends Ridgewood Summit, the highest elevation along the route's 807-mile (1,299 km) trek through California. SR 20 splits from US 101 in downtown Willits. US 101 leaves Willits as a two-lane road, but it soon widens to a four-lane expressway until the intersection with the western portion of State Route 162, where it reverts back to a two-lane road. North of Laytonville, US 101 runs along the Eel River, where it will follow until well into Humboldt County. About 12 miles (19 km) northwest of Laytonville, US 101 becomes an undivided freeway near the community of Cummings. SR 271 is the old portion of US 101 through this area. At Leggett, US 101 meets SR 1 for the last time, and from this point until Piercy, US 101 runs along a substandard section of highway with frequent landslides, which Cal Trans is now bypassing with unique bridge construction to move the highway across the Eel River away from the troubled spots. North of Piercy, the freeway portion again ends and the road narrows down to two lanes, before another stretch of divided highway.

Arriving in Humboldt County, another narrow two lane portion of highway 101 dissects Richardson Grove State Park. Just after the park boundary, the highway becomes a a divided freeway, which continuing north by northwest, passes through the 53,000 acre Humboldt Redwoods State Park. A preserved portion of the original, bypassed highway route, known as the Avenue of the Giants for the huge, centuries-old redwood trees parallels the highway for over 30 miles in southern Humboldt. There is also a section of freeway through Rio Dell. After the junction for State Route 36 (also the western terminus for that route), US 101 becomes a freeway again between Fortuna and Eureka. North of Humboldt Hill, the road enters the City of Eureka (a potential bypass of the city was successfully blocked repeatedly). As the route traverses Eureka, the southern portion is known as "Broadway" and then as it bears east along Humboldt Bay, the Highway is aligned on a one-way couplet (4th and 5th Streets). Five miles later the highway leaves Eureka's northern city limit and continues north. The expressway style section between Eureka and Arcata, which is also a safety corridor, is named the "Michael J. Burns Freeway," in honor of the State Senator who was a proponent of California's Highways. The Highway becomes an unobstructed Freeway through the center of Arcata, passing the the junction for State Route 299 (also the western terminus for that route), in the Valley West (northernmost) part of the college town. The highway continues north as it skirts westerly around McKinleyville on a high bluff north of the Mad River. As the highway reaches Clam Beach (a county park), motorists get their first magnificent full view of the Pacific Ocean north of the Golden Gate. North of Trinidad, the highway narrows to one lane in each direction, except for a 14-mile (23 km) portion through Redwood National and State Parks running inland east of the Prairie Creek Redwoods State Park boundary. The placement of the highway near giant Redwoods led to increased awareness of the destruction of the redwoods after decades of extensive logging, which ultimately led to the establishment of Redwood National Park in 1968. North of Klamath, the highway closely follows the Pacific coast again. Shortly north of Crescent City, U.S. 101 intersects with U.S. Route 199, which heads northeast as the Redwood Highway, terminating in Grants Pass, Oregon. Highway 101 (no longer called the "Redwood Highway" at this point) continues north along the California coast until it reaches the Oregon border.

History

Instead of terminating in Los Angeles, Highway 101 used to travel all the way south through San Diego to the United States–Mexico border in San Ysidro. However, this part was deleted in the late 1960s in favor of Interstate 5. The only remnant of the old route is a mileage sign at the Santa Barbara/Ventura County line, which lists the distance to San Diego, even though Highway 101 ends in Los Angeles.

The old alignment in San Diego County from Oceanside to Del Mar is now known as San Diego County Route S21. It is signed unofficially in many places as "Historic Route 101".

Control cities

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Northbound

Los Angeles and Ventura Counties

• Los Angeles Civic Center – between the East Los Angeles Interchange and the Four Level Interchange
• Hollywood – between the Four Level Interchange and Sunset Blvd
• Ventura – between the Four Level Interchange and Ventura
• San Francisco – between interchange with State Route 126 in Ventura and San Francisco city limits

Santa Barbara, San Luis Obispo, and Monterey Counties

• Santa Barbara – Alternatively used with San Francisco between Ventura and Santa Barbara
• San Luis Obispo – Alternatively used with San Francisco between Hollister Avenue (exit 110) and San Luis Obispo
• Salinas – Alternatively used with San Francisco between Pismo Beach and Salinas

San Francisco Bay Area

• San Jose – Alternatively used with San Francisco between Chualar and San Jose
• Bay Bridge and San Francisco Civic Center – between the San Francisco city limits and I-80
• Golden Gate Bridge – between I-80 and the aforementioned structure

Northern California Coast

• Eureka – between the Golden Gate Bridge and Eureka
• San Rafael – between Marin City and Downtown San Rafael; also alternatively used with Eureka at main signposts
• Santa Rosa – Alternatively used with Eureka until reaching Santa Rosa
• Crescent City – between Eureka and Crescent City
• Oregon Coast – between Crescent City and the Oregon/California border

Southbound

• Eureka – between Crescent City and Eureka
• San Francisco – between Eureka and the Golden Gate Bridge
• San Jose – between Van Ness Avenue and San Jose
• Los Angeles – between San Jose and the Four Level Interchange
• Santa Ana – between the Four Level Interchange and the East Los Angeles Interchange

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	#	Destinations	Notes
Los Angeles LA S0.00-38.19	Los Angeles	S0.00		I-5 south (Santa Ana Freeway) – Santa Ana	Southbound exit and northbound entrance
		S0.00	133	Euclid Avenue	Southbound exit and northbound entrance
		S0.00		SR 60 east (Pomona Freeway) – PomonaModule:Jct warning: "road" parameter is deprecated	Southbound exit and northbound entrance
		S0.02	1A	Seventh Street	Southbound exit and northbound entrance
		See Santa Ana Freeway (exits 1B-3)
		1.62	3B	SR 110 north (Pasadena Freeway) / I-110 south (Harbor Freeway) – Pasadena, San Pedro	Signed as exit 3 northbound
		See Hollywood Freeway (exits 3B-12C)
		11.65	13B	SR 134 east (Ventura Freeway) – Pasadena	Southbound exit and northbound entrance (Hollywood Split)
		11.80	13	SR 170 north (Hollywood Freeway) – Sacramento	North end of SR 170 overlap, northbound exit and southbound entrance (Hollywood Split)
	See Ventura Freeway (exits 13A-78)
Ventura VEN 0.00-R43.62
	Short gap in freeway
		43.57	83	Bates Road
Santa Barbara SB R0.00-90.99	Carpinteria	0.63	84	SR 150 east – Ojai, Lake Casitas
		1.61	85	Bailard Avenue
		2.64	86A	Casitas Pass Road	Signed as exit 86 northbound
		3.06	86B	Linden Avenue	Southbound exit and northbound entrance
		3.65	87A	Santa Monica Road	Signed as exit 87 northbound
			87B	Carpinteria Avenue	Southbound exit only
		5.28	88	Padaro Lane, Santa Claus Lane
		7.13	90	Padaro Lane – Summerland
		8.26	91	Evans Avenue – Summerland
		9.00	92	Sheffield Drive
		10.02	93	San Ysidro Road
	Santa Barbara	10.54	94A	Olive Mill Road, Coast Village Road	No northbound entrance
			94B	Hermosillo Drive	Northbound exit only
		11.41	94C	Hot Springs Road, Cabrillo Boulevard, Coast Village Road	Signed as exit 94B southbound
			95	Los Patos Way	Southbound exit only; unsigned
			95	Salinas Street	Northbound exit and entrance
		12.75	96A	SR 144 (Milpas Street)
		13.49	96B	Laguna Street, Garden Street
		14.19	97	Bath Street, Castillo Street – Santa Barbara Harbor
		14.76	98A	Carrillo Street – Downtown Santa Barbara	Signed as exit 98 southbound
		15.26	98B	Arrellaga Street	Northbound exit and entrance
		15.73	99A	Mission Street	Signed as exit 99 southbound
			99B	Pueblo Street	Northbound exit only
		16.55	100	SR 225 east (Las Positas Road)
		17.78	101A	La Cumbre Road, Hope Avenue
		18.38	101B	SR 154 westModule:Jct warning: "road" parameter is deprecated – Cachuma Lake
			102	El Sueno Road	Northbound exit and entrance
		20.06	103	Turnpike Road
	Goleta	21.15	104A	Patterson Avenue	Signed as exit 104 southbound
		21.41	104B	SR 217 west – Airport, UCSB	Northbound exit and southbound entrance
		22.53	105	Fairview Avenue
		23.72	107	Los Carneros Road
		24.77	108	Glen Annie Road, Storke Road
		26.91	110	Winchester Canyon Road, Hollister Avenue
	North end of freeway
		30.06	113	Dos Pueblos Canyon Road
		32.84	116	El Capitan Ranch Road
		33.85	117	El Capitan State Beach
		36.62	120	Refugio Road – Refugio State Beach
		44.82	128	Mariposa Reina
				Gaviota State Beach	At-grade intersection
		47.19	Gaviota Gorge Tunnel (northbound only)
		48.85	132	SR 1 north – Lompoc , Vandenberg AFB	North end of SR 1 overlap
	Buellton	56.46	139	Santa Rosa Road
		57.13	140A	SR 246 – Lompoc, Solvang
		57.55	140B	Frontage Roads, Avenue of the Flags
		63.00	146	SR 154 east – Los OlivosModule:Jct warning: "road" parameter is deprecated, Cachuma Lake
		70.91	154	SR 135 north – Los Alamos, Vandenberg AFB
		78.69	161	Solomon Summit	Unsigned
	South end of freeway
		82.18	164	Clark Avenue – Orcutt
		84.34	167	Santa Maria Way (US 101 Bus. north)
		86.59	169	Betteravia Road – Sisquoc
		87.60	170	Stowell Road
	Santa Maria	88.60	171	SR 166 west (Main Street) – Santa Maria, Guadalupe	South end of SR 166 overlap
		89.69	172	Donovan Road
		90.75	173	SR 135 south (Broadway, US 101 Bus. south) – Santa Maria
San Luis Obispo SLO 0.00-R69.32		0.81	175	SR 166 east – Maricopa, Bakersfield	North end of SR 166 overlap
		4.85	179	Tefft Street – Nipomo
		7.84	182	Thompson Road, Los Berros Road
	Short gap in freeway
	Arroyo Grande	12.52 12.80	186	Traffic Way (US 101 Bus. north), Fair Oaks Avenue	No northbound entrance
		13.18	187A	SR 227 north (Grand Avenue, US 101 Bus. south)
		13.75	187B	Brisco Road, Halcyon Drive
		14.61	188	Oak Park Road
		15.58	189	4th Street, Five Cities Drive	Signed as exits 189 (4th Street) and 190A (Five Cities Drive) southbound
	Pismo Beach	16.40 16.62	190B	Price Street (US 101 Bus. north), Hinds Avenue	No northbound entrance; signed as exit 190 northbound
		16.88	191A	SR 1 south – Pismo BeachModule:Jct warning: "road" parameter is deprecated	No southbound entrance
		17.75	191B	Shell Beach Road, Price Street (SR 1 south / US 101 Bus. south)	South end of SR 1 overlap
		19.81	193	Spyglass Drive, Shell Beach Road
		21.10	195	Avilla Beach Drive
		22.30	196	San Luis Bay Drive – See Canyon, Avila Beach
		24.30	198	Higuera Street
	San Luis Obispo	25.91	200A	Los Osos Valley Road	Signed as exit 200 southbound
			200B	Prado Road, Elks Lane	Northbound exit and entrance
		27.50	201	SR 227 south (Madonna Road)
		28.07	202A	Marsh Street
		28.81	202B	Broad Street
		29.08	203A	Osos Street, Santa Rosa Street
		29.08	203B	SR 1 north – Morro Bay, Hearst Castle	North end of SR 1 overlap
		29.40	203C	California Boulevard
		29.77	203D	Grand Avenue – Cal Poly	Northbound exit and southbound entrance
		29.99	204	Monterey Street	No southbound entrance
	Short gap in freeway
		37.85	211	SR 58 east – Santa Margarita
		42.27	216A	Santa Barbara Road	Signed as exit 216 southbound
			216B	San Diego Way	Northbound exit and southbound entrance
	Atascadero	44.01	218A	Santa Rosa Road
		44.84	218B	Curbaril Avenue
		45.57	219	SR 41 (Morro Road)
		45.96	220A	Traffic Way (US 101 Bus. north)
		46.87	220B	San Anselmo Road
		48.33	222	Del Rio Road (US 101 Bus. south)
		49.32	223	San Ramon Road, Santa Cruz Road
		50.64	224	Vineyard Drive (US 101 Bus. north)
		51.45	225	Las Tablas Road
		52.44	226	Main Street (US 101 Bus. south)
	Paso Robles	53.89	228	SR 46 west – Cambria, Hearst Castle	South end of SR 46 overlap
		55.67	229	Spring Street (US 101 Bus. north)	Northbound exit and southbound entrance
			230	Pine Street	Southbound exit and entrance
			230	Paso Robles Street	Northbound exit only
		56.88	231A	16th Street	Southbound exit and northbound entrance
		57.92	231B	SR 46 east / CR G14 – Fresno, Bakersfield	North end of SR 46 overlap; signed as exit 231 northbound
		58.76	232	Spring Street (US 101 Bus. south)	No southbound entrance
	Short gap in freeway
		65.08	239A	San Miguel	Northbound exit and southbound entrance
		65.56	239B	10th Street	Signed as exit 239 southbound
		67.23	241A	San Miguel	Southbound exit and northbound entrance
		67.71	241B	Camp Roberts	Signed as exit 241 northbound
Monterey MON R0.00-101.32		0.84	244	Camp Roberts
		2.15	245	East Garrison
		7.94	251	Bradley
		9.67	252	CR G18 (Jolon Road) – Fort Hunter Liggett
		15.46	258	Alvarado Road
		17.86	260	Los Lobos Road
		21.99	263	Paris Valley Road – San Ardo
		29.90	271	Paris Valley Road – Lockwood
		32.02	273	SR 198 east – San Lucas, Coalinga
		37.31	278	Wild Horse Road
		39.77	281	First Street (US 101 Bus. north / CR G13 / CR G15) – King City
	King City	40.72	282A	Canal Street
		41.19	282B	Broadway (US 101 Bus. south) – King City
		41.95	283	CR G14 (Jolon Road) – Fort Hunter Liggett
	North end of freeway
				Central Avenue	At-grade intersection
	South end of freeway
		52.66	293	Espinosa Road (US 101 Bus. north / CR G16) – Greenfield
	Greenfield	53.36	294A	Oak Avenue
		53.86	294B	Walnut Avenue
		54.79	295	Thorne Road (US 101 Bus. south) – Greenfield
	Short gap in freeway
		60.40	301	Arroyo Seco Road
		61.59	302	SR 146 (US 101 Bus. north) – Soledad
		62.70	303	Front Street (US 101 Bus. south)
		64.63	305	Camphora Gloria Road
		66.40	307	Soledad Correctional Facility
		69.37	310	Gloria Road (US 101 Bus. north) – Gonzales
		70.86	311	5th Street
		72.61	313	Old Stage Road (US 101 Bus. south) – Gonzales
		76.97	317	Chualar
	North end of freeway
		82.47		Abbott Street (US 101 Bus. north) – Spreckels	Northbound exit and southbound entrance
	South end of freeway
	Salinas	85.62	326A	Airport Boulevard
			326B	Fairview Avenue	Northbound exit only
		86.12	326C	Monterey Peninsula	Signed as exit 326B southbound
		86.82	327	John Street (SR 68)
		87.30	328	To SR 183 (Market Street)
		88.24	329	North Main Street (US 101 Bus. north)	Northbound exit and southbound entrance
		88.24	329	Main Street (SR 183 / US 101 Bus. south) – Salinas	Southbound exit and northbound entrance
		89.27	330	Laurel Drive
		90.97	331	Boronda Road (US 101 Bus. south)
	North end of freeway
				Russell Road	Northbound exit and entrance
				Espinosa Road	At-grade intersection; no northbound entrance
		95.35	336	SR 156 west – Monterey PeninsulaModule:Jct warning: "road" parameter is deprecated	South end of SR 156 overlap
			337	San Miguel Canyon Road (CR G12)
				Dumbarton Road to San Juan Road – Aromas, Watsonville	At-grade intersection; no northbound entrance
				San Juan Road – Aromas, Watsonville	At-grade intersection; no northbound exit
San Benito SBT 0.00-R7.52		3.01	345	SR 156 east – Hollister	North end of SR 156 overlap
		4.90	347	SR 129 west – Watsonville
		6.48	349	Betabel Road, Y Road
Santa Clara SCL R0.03-52.55		3.20	353A	SR 25 south – Hollister, Pinnacles National Monument
	South end of freeway
		4.94	355	Monterey Street (US 101 Bus. north) – Gilroy
	Gilroy	6.08	356	SR 152 east (Pacheco Pass Road)Module:Jct warning: "road" parameter is deprecated	South end of SR 152 overlap
		7.53	357	SR 152 west / CR G9 (Leavesley Road) – Gilroy	North end of SR 152 overlap
		10.27	360	Masten Avenue
		12.46	362	San Martin Avenue
		15.07	365	Tennant Avenue
	Morgan Hill	16.00	366	East Dunne Avenue – Morgan Hill
		17.82	367	Cochrane Road (US 101 Bus. south)
	San Jose	21.25	371	Coyote Creek Golf Drive
		23.10	373	Bailey Avenue
		26.78	377A	SR 85 north – Mountain View, Cupertino	No northbound entrance; signed as exit 377B southbound
		27.00	377B	Silicon Valley Boulevard, Bernal Road	Signed as exit 377A southbound
		28.11	378	SR 82 north (Blossom Hill Road)Module:Jct warning: "road" parameter is deprecated
	See Bayshore Freeway (exits 378-433A)
San Mateo SM 0.00-26.11
San Francisco SF 0.00-11.18		4.36 4.54	433B	I-80 east – Bay Bridge, Oakland	Signed as exit 433 southbound
			433C	Ninth Street – Civic Center	Northbound exit and southbound entrance
			434A	Duboce Avenue	Northbound exit and southbound entrance
			434B	Octavia Boulevard, Fell Street	Northbound exit and southbound entrance
		Gap in freeway; US 101 uses Van Ness Avenue and Lombard Street
				Presidio, Crissy Field	Northbound exit only
			437	Marina (Marina Boulevard)	Southbound exit and northbound entrance
		9.60	438	SR 1 south (19th Avenue) – Golden Gate Park	South end of SR 1 overlap
		9.71	439	25th Avenue – View Area, Presidio, Golden Gate NRA, Fort Point
		Golden Gate Bridge over the Golden Gate
Marin MRN L0.00-27.63	Sausalito
				Vista Point	Northbound exit and entrance
		0.32	442	Alexander Avenue – Sausalito
		0.89	Waldo Tunnel
		1.52	443	Spencer Avenue, Monte Mar Drive
			444	Rodeo Avenue	No access across US 101
		3.33	445A	Sausalito, Marin City
		4.46	445B	SR 1 north – Mill Valley, Stinson Beach	North end of SR 1 overlap
	Corte Madera		446	Seminary Drive
		5.70	447	SR 131 east (Tiburon Boulevard)Module:Jct warning: "road" parameter is deprecated
		7.37	449A	Paradise Drive, Tamalpais Drive	Signed as exit 449 northbound
			449B	Madera Boulevard	Southbound exit and entrance
		8.02	450A	Lucky Drive, Doherty Drive
	Larkspur	8.47	450B	Sir Francis Drake Boulevard – San Anselmo, Richmond Bridge, Kentfield
	San Rafael	9.63	451A	Andersen Drive	Southbound exit and entrance
		10.00	451	To I-580 east – Richmond BridgeModule:Jct warning: "road" parameter is deprecated	Northbound exit only
		10.00	451B	I-580 east – Richmond Bridge, Oakland	Southbound exit and northbound entrance
		10.72	452	Central San Rafael
		12.19	454A	Lincoln Avenue	No northbound exit
		12.69	454B	North San Pedro Road	Signed as exit 454 northbound
		13.71	455	Freitas Parkway – Terra Linda
		14.71	456	Lucas Valley Road, Smith Ranch Road
		15.57	457	St. Vincent Drive – Marinwood
		16.64	458	Nave Drive, Alameda del Prado – Hamilton Field
		18.09	459	Ignacio Boulevard, Bel Marin Keys Boulevard, Entrada Drive – Hamilton Field
	Novato	18.94	460	SR 37 east – Napa, VallejoModule:Jct warning: "road" parameter is deprecated	Signed as exits 460A (SR 37) and 460B (South Novato Boulevard) northbound
		20.19	462A	Rowland Boulevard (US 101 Bus. north)
		21.11	462B	De Long Avenue – Downtown Novato
		22.00	463	Atherton Avenue, San Marin Drive (US 101 Bus. south)
	North end of freeway
				San Antonio Road	At-grade intersection; no northbound entrance
Sonoma SON 0.00-R56.22				San Antonio Road	At-grade intersection; no northbound exit
	South end of freeway
		2.94	472A	Petaluma Boulevard South (US 101 Bus. north)
	Petaluma	3.58	472B	SR 116 east – Sonoma, Napa	South end of SR 116 overlap
		4.76	474	East Washington Street – Central Petaluma
		5.76	476	Old Redwood Highway, Petaluma Boulevard North (US 101 Bus. south) – Penngrove
		10.67	479	Railroad Avenue	Northbound exit and southbound entrance
	Cotati	12.00	481A	West Sierra Avenue – Cotati	Northbound exit and southbound entrance
		12.69	481B	SR 116 west (Gravenstein Highway) – Rohnert Park, Sebastopol, Cotati	North end of SR 116 overlap; signed as exit 481 southbound
	Rohnert Park	13.88	483	Rohnert Park Expressway
		15.02	484A	Golf Course Drive, Wilfred Avenue	Signed as exit 484 southbound
		15.53	484B	Santa Rosa Avenue (US 101 Bus. north)	Northbound exit and southbound entrance
		16.54	485	Todd Road
		18.49	487	Yolanda Avenue, Hearn Avenue
		19.00	488A	Baker Avenue, Santa Rosa Avenue, Corby Avenue
	Santa Rosa	19.66	488B	SR 12 – Sebastopol, Sonoma
		20.09	489	Downtown Santa Rosa
		20.74	490	College Avenue
		21.74	491A	Steele Lane, Guerneville Road	Signed as exit 491 southbound
		22.52	491B	Bicentennial Way	Northbound exit and southbound entrance
		22.81	492	Hopper Avenue, Mendocino Avenue (US 101 Bus. south), Old Redwood Highway
		24.86	494	River Road – Guerneville, Calistoga
		25.90	495A	Fulton Road – Fulton
		26.33	495B	Airport Boulevard
		27.62	496	Shiloh Road
		29.35	498	Windsor
		30.67	499	Arata Lane	Northbound exit and southbound entrance
		33.48	502	Healdsburg Avenue, Old Redwood Highway
	Healdsburg	34.55	503	Central Healdsburg	Northbound exit and southbound entrance
		34.88	504	Westside Road – Guerneville	Southbound exit and northbound entrance
		36.27	505	Dry Creek Road – Healdsburg
		38.56	507	Lytton Springs Road, Alexander Valley Road
		40.03	509	Independence Lane
		41.43	510	To SR 128 east – GeyservilleModule:Jct warning: "road" parameter is deprecated
		43.37	512	SR 128 east – Geyserville, CalistogaModule:Jct warning: "road" parameter is deprecated	South end of SR 128 overlap
		47.85	517	Asti
		49.05	518	Dutcher Creek Road – Stewarts Point
		50.43	519	South Cloverdale Boulevard (US 101 Bus. north / SR 128 Bus. west)
	Cloverdale	51.62	520	Citrus Fair Drive
		53.40	522	SR 128 west (US 101 Bus. south) – Fort Bragg, Mendocino	North end of SR 128 overlap
Mendocino MEN R0.10-T106.80		0.48	525	Geysers Road
	North end of freeway
				Old River Road	At-grade intersection
		10.89		SR 175 east – Lakeport	At-grade intersection
	South end of freeway
		19.68	544	Burke Hill Drive
		20.71	545	Cox-Shrader Road
		21.60	546	SR 253 west – Ukiah, Boonville
		23.45	548A	Talmage (SR 222)
	Ukiah	24.06	548B	Gobbi Street
		24.53	549	Perkins Street, Vichy Springs Road – Central Ukiah
		26.16	551	North State Street – Ukiah
		27.41	552	Lake Mendocino Drive
		30.43	555A	Calpella
		30.83	555B	SR 20 east – Upper Lake, Williams	South end of SR 20 overlap
		32.63	557	West Road
	North end of freeway
	Willits	46.36		SR 20 west – Fort Bragg, Mendocino Coast	North end of SR 20 overlap; at-grade intersection
		59.31		SR 162 east – Covelo, Round Valley	At-grade intersection
				Branscomb, Dos Rios	At-grade intersection
		84.69	609	SR 271 north
		89.57	614	South Leggett (SR 271)
		91.24		SR 1 south – Leggett, Fort Bragg	At-grade intersection
		101.89	625	SR 271
		103.82	627	Piercy (SR 271)
Humboldt HUM T0.00-R137.44		0.08		SR 271 south – Piercy, Cooks Valley	At-grade intersection
	South end of freeway
		8.60	636	Benbow
		11.12	639A	Sprowel Creek Road (US 101 Bus. north) – Garberville	No northbound entrance
		11.50	639B	Garberville, Redway	No southbound entrance
		14.31	642	Redwood Drive (US 101 Bus. south) – Redway
		17.68	645	Avenue of the Giants (SR 254), Hooker Creek Road – Phillipsville
		22.44	650	Miranda, Phillipsville
		25.01	653	Salmon Creek Road
		27.94	656	Myers Flat (SR 254)
		33.22	661	Weott
		35.70	663	South Fork, Honeydew (SR 254)
		39.16	667A	Avenue of the Giants (SR 254)	Southbound exit only
		39.67	667	Redcrest, Holmes
		43.32	671	Pepperwood, Redcrest, Holmes
		45.91	674	Avenue of the Giants (SR 254), Jordan Road – Pepperwood
		47.95	676	Stafford Road
	Short gap in freeway
		51.84	679	Rio Dell, Scotia (SR 283 / US 101 Bus. north)
	Rio Dell	52.60	680	Davis Street
		53.38	681	Wildwood Avenue (US 101 Bus. south) – Rio Dell
	North end of freeway
		57.69		SR 36 east – Hydesville, Bridgeville	At-grade intersection
	South end of freeway
	Fortuna	59.50	687	Kenmar Road (US 101 Bus. north) – Fortuna
		60.49	688	12th Street
	Fortuna	61.53	689	Main Street (US 101 Bus. south)
		62.23	690	Palmer Boulevard
		63.10	691	Fernbridge, Ferndale (to SR 211)	Northbound exit and southbound entrance
		64.30	692	Loleta, Fernbridge, Ferndale (SR 211)
		65.95	694	Loleta Drive
		68.21	696	Hookton Road – Loleta
	Eureka	70.61	698	College of the Redwoods
		72.03	699	Fields Landing
		72.88	700	King Salmon Avenue
		73.72	701	Humboldt Hill Road
		74.77	702	Herrick Avenue, Elk River Road
		North end of freeway
		79.17		SR 255 north – SamoaModule:Jct warning: "road" parameter is deprecated	At-grade intersection
				Jacobs Avenue	At-grade intersection
				Indianola Cutoff	At-grade intersection
	Arcata			Bayside Cutoff	At-grade intersection
		South end of freeway
			712	South G Street	Southbound exit and entrance
		85.83	713	SR 255 south (Samoa Boulevard) – Arcata, Samoa, Sunny Brae
		86.50	714A	14th Street – Humboldt State University	Northbound exit and southbound entrance
		86.94	714B	Sunset Avenue – Arcata, Humboldt State University	Signed as exit 714 southbound
		88.27	716A	SR 299 east – Weaverville, Redding
		88.80	716B	Giuntoli Lane, Janes Road
		90.13	718	Central Avenue (US 101 Bus. north), North Bank Road (SR 200) – McKinleyville
		91.47	719	School Road
		92.99	721	Murray Road
		93.85	722	Arcata Airport
		95.62	723	North Central Avenue (US 101 Bus. south) – McKinleyville
		97.02	725	Crannell Road
		98.07	726A	Westhaven Drive	Northbound exit and southbound entrance
		98.36	726B	6th Avenue – Westhaven	Signed as exit 726 southbound
	Trinidad	100.71	728	Trinidad
		103.38	731	Seawood Drive
		106.07	734	Patricks Point Drive
	North end of freeway
				Bald Hill Road – Lady Bird Johnson Grove	At-grade intersection
		126.10	753	Newton B. Drury Scenic Parkway
Del Norte DN M0.00-46.49		0.15	765	Newton B. Drury Scenic Parkway
		3.77	768	Klamath Beach Road
		4.64	769	SR 169 east – Klamath, Terwer Valley
		27.87	791	Parkway Drive, Washington Boulevard – Crescent City
		30.81	794	US 199 to I-5 – Grants Pass	Northbound exit and southbound entrance
				To US 199 northModule:Jct warning: "road" parameter is deprecated – Grants Pass
		36.26		SR 197 south (North Bank Road)	At-grade intersection

References

1. ^ California Department of Transportation, Log of Bridges on State Highways, July 2007
2. [http://www.cahighways.org/stats1.html California Highways Highway Statistics]
3. CA Codes (shc:250-257)
4. California Department of Transportation, State Truck Route List (XLS file), accessed February 2008
5. California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
6. California Department of Transportation, California Numbered Exit Uniform System, US 101 Northbound and US 101 Southbound, accessed November 2007

U.S. Route 101
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