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In the U.S. state of Californiamarker, U.S. Route 101 (US 101) 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 Angelesmarker, about one mile (1.6 km) east of downtown Los Angeles at the East Los Angeles Interchangemarker, also known as the "Commuters' Complex." 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 , 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 Interchangemarker. From here, U.S. 101 becomes the Hollywood Freeway. It then heads to Hollywoodmarker and up through the Cahuenga Passmarker before reaching the San Fernando Valleymarker.

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 Venturamarker. 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 Parkmarker in Santa Barbara Countymarker where it shifts back to a north-south alignment. Along the way, it meets with the 405 freeway. This interchange was named the worst interchange for traffic in the United States. 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 Valleymarker.

Upon reaching Ventura, there is an interchange with SR 126, aka the Santa Paula Freeway.

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 San Franciscomarker. The last traffic signals along this stretch of the highway were removed in the early 1990s when the section through downtown Santa Barbaramarker was constructed after years of resistance from the Santa Barbara community.

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

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

Farther north, State Route 1 rejoins 101 for a section between Pismo Beachmarker and San Luis Obispomarker. 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 Obispomarker and Atascaderomarker 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 Salinasmarker, U.S. 101 is an expressway known as the Salinas River Valley Highway, since the Salinas River Valley extends from Santa Margaritamarker to the State Route 156 junction in Prunedalemarker. The highway passes Camp Robertsmarker south of Bradleymarker as well as the San Ardo Oil Fieldmarker about five miles (8 km) south of the town of San Ardomarker. Near this point, the wide agricultural bottomlands of the Salinas Valley begin.



San Francisco Bay Area

US 101 in San Francisco between Sacramento and Clay Sts.
A Muni ETI Skoda bus can be seen in the background.
When U.S. 101 reaches Gilroymarker, it becomes the South Valley Freeway, and it then heads through the suburb of Morgan Hillmarker before reaching San Josemarker. From San Jose to San Francisco, Highway 101 is known as the Bayshore Freeway as it passes through Palo Altomarker 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 Mazemarker, until the junction with the San Francisco Skyway (Interstate 80) and the Central Freewaymarker near the city's Civic Centermarker. 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 Streetmarker, Highway 101 heads west on Lombard Street, and then on Richardson Avenue, entering The Presidiomarker, 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 Bridgemarker.

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 Countymarker and is known as the Redwood Highway. After crossing the bridge, U.S. 101 climbs the Waldo Grademarker and passes through the Waldo Tunnel, the first of its kind in 300 miles (the other being the Gaviota Tunnelmarker in Santa Barbara Countymarker), before passing through San Rafaelmarker and Novatomarker. The section between Novato in Marin County and Petalumamarker in Sonoma Countymarker 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. It proceeds up the Alexander Valley with the Russian River before leaving Sonoma County and entering Mendocino Countymarker.



North Coast

The freeway portion ends north of Cloverdalemarker near the Mendocino Countymarker line, and it narrows to an expressway and eventually a two-lane road south of Hoplandmarker, the first time since leaving San Franciscomarker. There are plans for a proposed bypass to the east of Hopland which would make US 101 from its inception in Los Angeles to Ukiahmarker 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 Willitsmarker. South of Willits, US 101 ascends Ridgewood Summit, the highest elevation along the route's 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 follows the South Fork Eel River and Eel River to Fortunamarker near the mouth of the river. About 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.
Parking is available adjacent to Highway 101 along the sandy bar between Freshwater Lagoon and the Pacific Ocean
Arriving in Humboldt County, another narrow two lane portion of highway 101 bisects Richardson Grove State Parkmarker. Just after the park boundary, the highway becomes a divided freeway, which continuing north by northwest, passes through the Humboldt Redwoods State Parkmarker. 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 in southern Humboldt County. There is also a section of freeway through Rio Dellmarker. After the junction for State Route 36 (also the western terminus for that route), US 101 becomes a freeway again between Fortunamarker and Eurekamarker. North of Humboldt Hillmarker, 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 Baymarker, 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 Arcatamarker, 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 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 McKinleyvillemarker 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 Trinidadmarker, the highway narrows to one lane in each direction after crossing Big Lagoonmarker to pass inland of Stone Lagoonmarker and follow the coastal bar between Freshwater Lagoonmarker and the Pacific Oceanmarker south of Orick, Californiamarker. After a freeway through Redwood National and State Parksmarker running inland east of the Prairie Creek Redwoods State Parkmarker boundary, the highway again narrows to one lane in each direction at the Klamath River. The original placement of the highway near giant Coast 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 Parkmarker in 1968. The original highway segment through Prairie Creek Redwoods State Park is now a scenic alternate similar to Avenue of the Giants, named Newton B. Drury Scenic Parkway in honor of the fourth director of the National Park Service and executive director of the Save-the-Redwoods League. North of Klamathmarker, the highway closely follows the Pacific coast again. In Crescent Citymarker, the highway once again separates into a one-way couplet (L and M Streets) for nine blocks. As it leaves Crescent City, U.S. 101 becomes a divided freeway for the last time in California (built slightly to the west of the original two-lane alignment, now called Parkway Drive). As the 3-mile divided freeway portion ends, U.S. 101 intersects the southern terminus of U.S. Route 199, which heads northeast as the Redwood Highway, terminating in Grants Pass, Oregonmarker. Highway 101 (no longer called the "Redwood Highway" at this point) is reduced to two lanes and 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 Diegomarker to the United States–Mexico border in San Ysidromarker. 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 Barbaramarker/Ventura Countymarker line, which lists the distance to San Diego, even though Highway 101 ends in Los Angeles.

The old alignment in San Diego Countymarker from Oceansidemarker to Del Marmarker is now known as San Diego County Route S21. It is signed unofficially in many places as "Historic Route 101". Before I-5's implementation in the 1960s, long sections of 101 in this area (through USMC's Camp Pendleton and south to the northern reaches of San Diego) were three lanes, with the center lane being a 'passing lane' for both northbound and southbound drivers. Horrific and fatal head on collisions were not uncommon. In newspaper accounts, it was often referred to as the "suicide lane".

Significant portions of 101 were originally known as the Royal Road or El Camino Real. The name, El Camino Real, continues in widespread use from South San Francisco to San Diego for surface routes, most of which are close to, and parallel to 101.

Major intersections

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 Angelesmarker S0.00 Southbound exit and northbound entrance
133 Euclid Avenue Southbound exit and northbound entrance
S0.02 1A Seventh Street Signed as exit 1A southbound
S0.62 1A Fourth Street Signed as exit 1B southbound; no northbound entrance
S0.91 1B First Street Signed as exit 1C southbound; no southbound entrance
1C Cesar Chavez Avenue Northbound exit only
S1.33
0.00
1D No southbound entrance; left exit southbound
1E Mission Road No northbound exit
0.39 2A Vignes Street Northbound exit and entrance
0.76 2B Alameda Street – Union Stationmarker No southbound exit
0.87 2B Los Angeles Street No northbound exit
1.01 2C Spring Street Northbound exit only
1.08 2C Broadway Southbound exit and northbound entrance
1.32 3A Grand Avenue, Temple Street Northbound exit is part of exit 3

1.62 3B Signed as exit 3 northbound;
2.48 4A Glendale Boulevard, Echo Park Avenue, Union Avenue, Belmont Avenue
2.86 4B South end of SR 2 overlap
3.34 5A Rampart Boulevard, Benton Way
3.76 5B Silver Lake Boulevard
4.40 6A Vermont Avenue
4.85 6B Melrose Avenue, Normandie Avenue
5.55 7 North end of SR 2 overlap
6.25 8A Sunset Boulevard No northbound entrance
6.52 8B Hollywood Boulevardmarker
6.91 8C Gower Street
7.06 9A Vine Street Southbound exit only
7.46 9B Cahuenga Boulevard – Hollywood Bowlmarker No northbound entrance; signed as exit 9A northbound
7.84 9C Highland Avenue (SR 170 south) – Hollywood Bowlmarker South end of SR 170 overlap; signed as exit 9B northbound
9.22 11A Barham Boulevard – Burbankmarker Signed as exit 11 southbound
9.60 11B Universal Studios Boulevard Northbound exit and entrance; serves Universal Studios Hollywoodmarker
10.34 12A Lankershim Boulevard – Universal Citymarker
10.56 12B Ventura Boulevard No southbound exit
11.11 12C Vineland Avenue Signed as exit 12B southbound
11.65 13B Southbound exit and northbound entrance
11.80 13 North end of SR 170 overlap, northbound exit and southbound entrance
11.83 13A Tujunga Avenue Southbound exit and northbound entrance
12.85 14 Laurel Canyon Boulevard – Studio Citymarker
13.88 15 Coldwater Canyon Avenue
14.89 16 Woodman Avenue
15.91 17 Van Nuys Boulevard
16.94 18 Sepulveda Boulevard Northbound exit and southbound entrance
17.17 19A Former SR 7
17.50 19B Haskell Avenue No southbound entrance
18.61 20 Hayvenhurst Avenue Northbound exit and southbound entrance
19.22 21 Balboa Boulevard – Encinomarker
20.23 22 White Oak Avenue
21.25 23 Reseda Boulevard
22.25 24 Tampa Avenue
23.26 25 Winnetka Avenue – Woodland Hillsmarker
24.31 26A De Soto Avenue, Serrania Avenue Signed as exit 26 southbound
24.85 26B Canoga Avenue Northbound exit and southbound entrance
25.34 27 Signed as exits 27A (north) and 27B (south) northbound
25.76 27C Shoup Avenue Northbound exit and southbound entrance
26.45 28 Fallbrook Avenue Southbound exit only

26.86 28 Woodlake Avenue Northbound exit and entrance
27.36 29 Mulholland Drive, Valley Circle Boulevard
Calabasasmarker 28.29 30 Parkway Calabasas
31.06 32 Las Virgenes Road – Malibu Canyon
31.92 33 Lost Hills Road
Agoura Hillsmarker 32.79 34 Liberty Canyon Road
33.69 35 Chesebro Road – Agoura Hillsmarker
35.04 36 Kanan Road
36.18 38 Reyes Adobe Road
Westlake Villagemarker 37.54 39 Lindero Canyon Road
Venturamarker
VEN 0.00-R43.62
Thousand Oaksmarker 0.70 40 South end of SR 23 overlap
1.62 41 Hampshire Road
3.02 43A Rancho Road Signed as exit 43B northbound
3.11 43B North end of SR 23 overlap; signed as exit 43A northbound
4.06 44 Moorpark Road – Thousand Oaksmarker
5.05 45 Lynn Road
6.19 46 Ventu Park Road – Newbury Parkmarker
7.02 47A Rancho Conejo Boulevard, Borchard Road Signed as exits 47A (Rancho Conejo Boulevard) and 47B (Borchard Road) northbound
7.89 47B Wendy Drive – Newbury Parkmarker Signed as exit 47C northbound
Camarillomarker 10.74 50 Camarillo Springs Road – Camarillo Grove County Park
12.30 52 Santa Rosa Road, Pleasant Valley Road
13.75 53A Flynn Road, Dawson Drive
13.85 53B
14.80 54 Carmen Drive – Camarillomarker
15.89 55 Las Posas Road
17.75 57 Central Avenue
Oxnardmarker 19.17 59 Del Norte Boulevard
20.08 60 Santa Clara Avenue, Rice Avenue
21.01 61 Rose Avenue
22.01 62A
22.73 62B South end of SR 1 overlap
63A Ventura Road Southbound exit only
Venturamarker R23.45 63B Johnson Drive – Montalvomarker Signed as exit 63 northbound
R24.65 64 Victoria Avenue – Channel Island Harbor
25.97 65 Telephone Road
26.39 66A Signed as exit 66 southbound; no southbound entrance
26.72 66B Main Street (US 101 Bus. north) – Venturamarker Northbound exit and entrance
28.45 68 Seaward Avenue
29.45 69 Vista del Mar Drive, Sanjon Road Northbound exit and southbound entrance
30.15 70A California Street, Ventura Avenue
30.91 70B Former US 399
31.50 71 Main Street (US 101 Bus. south) – Venturamarker Southbound exit and northbound entrance
Solimar Beachmarker R32.70 72 State Beaches (SR 1 north) North end of SR 1 overlap; northbound exit and southbound entrance
Seacliffmarker R38.98 78 Seacliffmarker (SR 1 south) South end of SR 1 overlap
Gap in freeway
R43.57 83 Bates Road
Santa Barbaramarker
SB R0.00-90.99
Carpinteriamarker R0.63 84 , Lake Casitasmarker
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
3.77 87A Santa Monica Road Signed as exit 87 northbound
87B Carpinteria Avenue Southbound exit only
R5.28 88 Padaro Lane, Santa Claus Lane
R7.14 90 Padaro Lane – Summerlandmarker
R8.26 91 Evans Avenue – Summerlandmarker
Montecitomarker 9.00 92 Sheffield Drive
10.02 93 San Ysidro Road
Santa Barbaramarker 10.54 94A Olive Mill Road, Coast Village Road No northbound entrance
94B Hermosillo Drive Northbound exit only
11.41 94C Cabrillo Boulevard (SR 225 west), Coast Village Road Signed as exit 94B southbound
95 (no name) Southbound exit only
95 Salinas Street Northbound exit and entrance
12.75 96A Milpas Street Former SR 144
13.49 96B Laguna Street, Garden Street
R14.19 97 Bath Street, Castillo Street – Santa Barbara Harbor
R14.76 98A Carrillo Street – Downtown Santa Barbaramarker Signed as exit 98 southbound
R15.26 98B Arrellaga Street Northbound exit and entrance
R15.73 99A Mission Street Signed as exit 99 southbound
99B Pueblo Street Northbound exit only
16.55 100
17.78 101A La Cumbre Road, Hope Avenue
18.38 101B  – Cachuma Lakemarker
102 El Sueno Road Northbound exit and entrance
20.06 103 Turnpike Road
Goletamarker 21.15 104A Patterson Avenue Signed as exit 104 southbound
21.41 104B  – Airportmarker, UCSBmarker 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
Short gap in freeway
30.06 113 Dos Pueblos Canyon Road
Short gap in freeway
32.84 116 El Capitan Ranch Road
33.85 117 El Capitan State Beachmarker
36.62 120 Refugio Road – Refugio State Beach
North end of freeway
44.82 128 Mariposa Reina Interchange
Gaviota State Beachmarker
47.19 Gaviota Gorge Tunnelmarker (northbound only)
South end of freeway
Las Cruces R48.85 132 , Vandenberg AFBmarker North end of SR 1 overlap
Gap in freeway
Buelltonmarker R56.46 139 Santa Rosa Road
R57.12 140A
R57.55 140B McMurray Road, Avenue of the Flags
Gap in freeway
Zaca 62.67 146 , Cachuma Lakemarker
Gap in freeway
70.92 154 , Vandenberg AFBmarker
Gap in freeway
78.69 161 (no name)
Santa Mariamarker 82.18 164 Clark Avenue – Orcuttmarker
84.34 167 Santa Maria Way (US 101 Bus. north)
86.59 169 Betteravia Road – Sisquocmarker
87.60 170 Stowell Road
Santa Mariamarker 88.60 171 South end of SR 166 overlap
89.69 172 Donovan Road
90.75 173
San Luis Obispomarker
SLO 0.00-R69.32
0.81 175 North end of SR 166 overlap
4.85 179 Tefft Street – Nipomomarker
7.84 182 Thompson Road, Los Berros Road
Gap in freeway
Arroyo Grandemarker 12.52 186 Traffic Way (US 101 Bus. north), Fair Oaks Avenue No northbound entrance
13.17 187A
13.75 187B Brisco Road, Halcyon Drive
Pismo Beachmarker 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
16.40 190B Price Street (US 101 Bus. north), Hinds Avenue No northbound entrance; signed as exit 190 northbound
16.88 191A No southbound entrance
17.76 191B Shell Beach Road, Price Street (SR 1 south, US 101 Bus. south) South end of SR 1 overlap
R19.81 193 Spyglass Drive, Shell Beach Road
R21.11 195 Avilla Beach Drive
R22.29 196 San Luis Bay Drive – See Canyon, Avila Beachmarker
R24.30 198 Higuera Street
San Luis Obispomarker 25.91 200A Los Osos Valley Road Signed as exit 200 southbound
200B Prado Road, Elks Lane Northbound exit and entrance
27.50 201
28.07 202A Marsh Street
28.81 202B Broad Street
29.08 203A Osos Street, Santa Rosa Street
29.08 203B , Hearst Castlemarker North end of SR 1 overlap
29.40 203C California Boulevard
29.77 203D Grand Avenue – Cal Polymarker Northbound exit and southbound entrance
29.99 204 Monterey Street No southbound entrance
Gap in freeway (Cuesta Grade)
Santa Margaritamarker 37.85 211
42.27 216A Santa Barbara Road Signed as exit 216 southbound
216B San Diego Way Northbound exit and southbound entrance
Atascaderomarker 44.01 218A Santa Rosa Road
44.84 218B Curbaril Avenue
45.57 219
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
Templetonmarker 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
, Hearst Castlemarker 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 North end of SR 46 overlap; signed as exit 231 northbound
58.76 232 Spring Street (US 101 Bus. south) No southbound entrance
Gap in freeway
San Miguelmarker 65.08 239A San Miguelmarker Northbound exit and southbound entrance
65.56 239B 10th Street Signed as exit 239 southbound
67.23 241A San Miguelmarker Southbound exit and northbound entrance
R67.71 241B Camp Robertsmarker Signed as exit 241 northbound
Montereymarker
MON R0.00-101.32
R0.84 244 Camp Robertsmarker
R2.15 245 East Garrisonmarker
R7.94 251 Bradleymarker
R9.67 252
R15.47 258 Alvarado Road
R17.86 260 Los Lobos Road
R21.99 263 Paris Valley Road – San Ardomarker
R29.90 271 Paris Valley Road – Lockwoodmarker
San Lucasmarker R32.02 273
R37.31 278 Wild Horse Road
King Citymarker R39.77 281 First Street (US 101 Bus. north, CR G13, CR G15) – King Citymarker
R40.72 282A Canal Street
R41.18 282B Broadway (US 101 Bus. south) – King Citymarker
R41.95 283
North end of freeway
Central Avenue
South end of freeway
52.66 293 Espinosa Road (US 101 Bus. north, CR G16) – Greenfieldmarker
Greenfieldmarker 53.36 294A Oak Avenue
53.86 294B Walnut Avenue
54.79 295 Thorne Road (US 101 Bus. south) – Greenfieldmarker
Gap in freeway
60.40 301 Arroyo Seco Road
Soledadmarker 61.59 302
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) – Gonzalesmarker
70.86 311 5th Street
72.61 313 Old Stage Road (US 101 Bus. south) – Gonzalesmarker
76.97 317 Chualarmarker
North end of freeway
82.47 Abbott Street (US 101 Bus. north) – Spreckelsmarker Interchange; northbound exit and southbound entrance
South end of freeway
Salinasmarker 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
329 North Main Street (US 101 Bus. north) Northbound exit and southbound entrance
R88.24 329 Main Street (SR 183, US 101 Bus. south) – Salinasmarker Southbound exit and northbound entrance
R89.27 330 Laurel Drive
R91.01 331 Boronda Road (US 101 Bus. south)
North end of freeway
R91.90 Russell Road Interchange; northbound exit and entrance
91.90 Espinosa Road No northbound entrance
95.44 336 Interchange; south end of SR 156 overlap
96.14 337 San Miguel Canyon Road (CR G12) Interchange
100.39 Dumbarton Road to San Juan Road (CR G11) – Aromasmarker, Watsonvillemarker No northbound entrance
San Juan Road (CR G11) – Aromasmarker, Watsonvillemarker No northbound exit
San Benitomarker
SBT 0.00-R7.52
South end of freeway
3.01 345 North end of SR 156 overlap
R4.90 347
R6.49 349 Betabel Road, Y Road
North end of freeway
Santa Claramarker
SCL R0.03-52.55
3.16 353 Interchange
Gavilan Collegemarker No left turn from US 101 north to Gavilan College
South end of freeway
R4.94 355 Monterey Street (US 101 Bus. north) – Gilroymarker
Gilroymarker R6.08 356 South end of SR 152 overlap
R7.53 357 North end of SR 152 overlap
R10.27 360 Masten Avenue
R12.46 362 San Martin Avenue
R15.07 365 Tennant Avenue
Morgan Hillmarker R16.01 366 East Dunne Avenue – Morgan Hillmarker
R17.82 367 Cochrane Road (US 101 Bus. south)
San Josemarker R21.25 371 Coyote Creek Golf Drive
R23.10 373 Bailey Avenue
R26.78 377A Signed as exit 377B southbound; no northbound entrance
R27.00 377B Silicon Valley Boulevard, Bernal Road Signed as exit 377A southbound
R28.61 378
30.10 380 Hellyer Avenue
31.00 381 Yerba Buena Road Southbound exit is part of exit 382
31.70 382 Capitol Expressway (CR G21)
33.03 383 Tully Road
34.55 385A Story Road Signed as exit 385 northbound
34.87 385B Signed as exit 384 northbound
R35.76 386A
R36.14 386B McKee Road, Julian Street
37.73 388A Oakland Road, 13th Street Former SR 238
38.30 388 Signed as exits 388B (north) and 388C (south)
38.80 389A Old Bayshore Highway Northbound exit and entrance
39.29 389B Brokaw Road, First Street Signed as exit 389 southbound
39.93 390 Southbound exit and northbound entrance
40.70 391 Trimble Road, De la Cruz Boulevard – Santa Claramarker Signed as exits 391A (Trimble Road) and 391B (De la Cruz Boulevard) southbound
Santa Claramarker
41.98 392 San Tomas Expressway, Montague Expressway (CR G4)
42.73 393 Great America Parkway, Bowers Avenue
Sunnyvalemarker 43.85 394 Lawrence Expressway (CR G2)
44.83 395 Fair Oaks Avenue Signed as exits 395A (north) and 395B (south) southbound
45.68 396A Malthilda Avenue north to SR 237 east Northbound exit and southbound entrance
45.68 396B Mathilda Avenue south – Sunnyvalemarker Signed as exit 396A southbound; former SR 85
46.13 396B Southbound exit and northbound entrance
46.13 396C Northbound exit and southbound entrance
Mountain Viewmarker 47.01 397 Ellis Street
47.89 398A Moffett Boulevard, NASA Parkway Signed as exit 398 northbound
48.10 398B Southbound exit and northbound entrance
48.60 399A Shoreline Boulevard – Mountain Viewmarker Signed as exit 399 southbound
48.97 399B Old Middlefield Way Northbound exit and southbound entrance
49.61 400A Amphitheatre Parkway, Rengstorff Avenue Signed as exits 400A (Amphitheatre Parkway) and 400B (Rengstorff Avenue) northbound
50.32 400C San Antonio Road Signed as exits 400B (north) and 400C (south) southbound
Palo Altomarker
52.01 402 Oregon Expressway (CR G3)
52.17 402 Embarcadero Road
San Mateomarker
SM 0.00-26.11
East Palo Altomarker 0.89 403 University Avenue (to SR 109)
1.87 404 Willow Road (SR 114, to SR 84) Signed as exits 404A (east) and 404B (west)
Menlo Parkmarker
3.59 406 South end of SR 84 overlap
Redwood Citymarker 5.39 408 North end of SR 84 overlap
6.62 409 Whipple Avenue– Redwood Citymarker
San Carlosmarker 411 Brittan Avenue Southbound exit and entrance
8.40 411 Holly Street, Redwood Shores Parkway – San Carlosmarker
412 Harbor Boulevard Southbound exit and entrance
Belmontmarker 9.55 412 Marine Parkway, Ralston Avenue – Belmontmarker Former Legislative Route 214
San Mateomarker 11.15 414A Hillsdale Boulevard – Foster Citymarker
11.90 414B
11.90 414B Fashion Island Boulevard No northbound exit
12.69 415 Kehoe Avenue Northbound exit and entrance
13.46 416 3rd Avenue Former SR 92
14.33 417A Dore Avenue Northbound exit
14.33 417 Poplar Avenue Southbound exit and entrance
14.69 417B Peninsula Avenue – Burlingamemarker Northbound exit and entrance
Burlingamemarker 419A Anza Boulevard Northbound exit and entrance
16.58 419B Broadway – Burlingamemarker
Millbraemarker 17.95 420 Millbrae Avenue – Millbraemarker
San Brunomarker 19.12 422 San Francisco International Airportmarker Southbound exit is part of exit 423A
R20.39 423A San Bruno Avenue
R20.72 423B
South San Franciscomarker R20.72 423C North Access Road  – North Cargo Area Southbound exit is part of exit 423A
21.69 424 South Airport Boulevard
21.92 425A Grand Avenue – Downtown South San Franciscomarker No southbound entrance
22.71 425B Oyster Point Boulevard
425C South San Franciscomarker (Airport Boulevard) Southbound exit and entrance
Brisbanemarker 23.39 426A Brisbanemarker, Cow Palacemarker (Bayshore Boulevard) Northbound exit only
23.66 426B Sierra Point Parkway, Marina Boulevard – Brisbanemarker Signed as exit 426 southbound; southbound exit and entrance are located north of northbound exit and entrance

San Franciscomarker
SF 0.00-11.18


0.03 429A Tunnel Avenue – Candlestick Parkmarker
0.77 429B Third Street – Cow Palacemarker
1.11 429C Paul Avenue No northbound entrance; signed as exit 430A southbound
1.77 430B Silver Avenue No northbound entrance
1.98 430A Northbound exit and southbound entrance
1.98 430A Signed as exit 431 southbound
2.00 431 Alemany Boulevardmarker, Bayshore Boulevard No southbound exit
2.92 432 Cesar Chavez Street, Potrero Avenue
4.10 433A Vermont Street Northbound exit only
4.24 433B Signed as exit 433 southbound
433C Ninth Street – Civic Centermarker Northbound exit and southbound entrance
434A Duboce Avenue Northbound exit and southbound entrance
434B Octavia Boulevard to Fell Street Northbound exit and southbound entrance
North end of freeway
R5.07 Mission Street, Otis Street
Market Streetmarker
6.71 Van Ness Avenue, Lombard Streetmarker – Fisherman's Wharfmarker
7.80 Broderick Street, Lombard Streetmarker, Richardson Avenue – Presidiomarker
South end of freeway
Presidiomarker, Crissy Fieldmarker Northbound exit only
L8.59 437 Marina Boulevard – Marinamarker Southbound exit and northbound entrance
9.40 438 South end of SR 1 overlap
9.71 439 25th Avenue – View Area, Presidiomarker, Golden Gate NRAmarker, Fort Pointmarker
Golden Gate Bridgemarker over Golden Gatemarker
Marinmarker
MRN L0.00-27.63
Sausalitomarker
Vista Point Northbound exit and entrance
0.32 442 Alexander Avenue – Sausalitomarker
0.89 Waldo Tunnel under Waldo Grademarker
1.52 443 Spencer Avenue, Monte Mar Drive
2.48 444 Rodeo Avenue No access across US 101
3.33 445A Sausalitomarker, Marin Citymarker
4.46 445B North end of SR 1 overlap
Strawberrymarker 446 Seminary Drive
5.70 447
Corte Maderamarker 7.37 449A Paradise Drive, Tamalpais Drive Signed as exit 449 northbound
7.66 449B Madera Boulevard Southbound exit and entrance
8.02 450A Lucky Drive, Doherty Drive
Larkspurmarker 8.60 450B Sir Francis Drake Boulevard – San Anselmomarker, Richmond Bridge, Kentfieldmarker
San Rafaelmarker 9.63 451A Andersen Drive Southbound exit and entrance
10.00 451 Francisco Boulevard to I-580 east – Richmond Bridge Northbound exit only
10.00 451B Southbound exit and northbound entrance
10.72 452 Central San Rafaelmarker
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 – Marinwoodmarker
16.64 458 Nave Drive, Alameda del Prado – Hamilton Field
18.09 459 Ignacio Boulevard, Bel Marin Keys Boulevard, Entrada Drive – Hamilton Field
Novatomarker 18.94 460 Signed as exits 460A (SR 37) and 460B (South Novato Boulevard) northbound
R20.19 462A Rowland Boulevard (US 101 Bus. north)
R21.11 462B De Long Avenue – Downtown Novatomarker
R22.00 463 Atherton Avenue, San Marin Drive (US 101 Bus. south)
North end of freeway
26.90 San Antonio Road No northbound entrance
Sonomamarker
SON 0.00-R56.22
San Antonio Road Interchange; no northbound exit
South end of freeway
2.94 472A Petaluma Boulevard South (US 101 Bus. north)
Petalumamarker 3.58 472B South end of SR 116 overlap
4.76 474 East Washington Street – Central Petalumamarker
5.76 476 Old Redwood Highway, Petaluma Boulevard North (US 101 Bus. south) – Penngrovemarker
10.67 479 Railroad Avenue Northbound exit and southbound entrance
Cotatimarker 12.00 481A West Sierra Avenue – Cotatimarker Northbound exit and southbound entrance
12.69 481B North end of SR 116 overlap; signed as exit 481 southbound
Rohnert Parkmarker 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 Rosamarker 19.66 488B
20.09 489 Downtown Santa Rosamarker
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 – Guernevillemarker, Calistogamarker
25.90 495A Fulton Road – Fulton
26.33 495B Airport Boulevard
27.62 496 Shiloh Road
29.35 498 Windsormarker
30.67 499 Arata Lane Northbound exit and southbound entrance
33.48 502 Healdsburg Avenue, Old Redwood Highway
Healdsburgmarker 34.55 503 Central Healdsburgmarker Northbound exit and southbound entrance
34.88 504 Westside Road – Guernevillemarker Southbound exit and northbound entrance
36.27 505 Dry Creek Road – Healdsburgmarker
R38.56 507 Lytton Springs Road, Alexander Valley Road
R40.03 509 Independence Lane
Geyservillemarker R41.43 510 Geyserville Avenue to SR 128 east – Geyservillemarker
R43.37 512 South end of SR 128 overlap
R47.85 517 Astimarker
R49.05 518 Dutcher Creek Road – Stewarts Point
R50.43 519 South Cloverdale Boulevard (US 101 Bus. north, SR 128 Bus. west)
Cloverdalemarker R51.62 520 Citrus Fair Drive
R53.40 522 North end of SR 128 overlap
Mendocinomarker
MEN R0.10-T106.80
0.48 525 Geysers Road
North end of freeway
Old River Road
Hoplandmarker 10.89
South end of freeway
19.68 544 Burke Hill Drive
20.71 545 Cox-Shrader Road
R21.59 546
Ukiahmarker R23.45 548A Talmagemarker (SR 222)
R24.06 548B Gobbi Street
R24.53 549 Perkins Street, Vichy Springs Road – Central Ukiahmarker
R26.16 551 North State Street – Ukiahmarker
27.41 552 Lake Mendocino Drive
30.43 555A Calpellamarker
30.83 555B South end of SR 20 overlap
R32.63 557 West Road
North end of freeway
Willitsmarker 46.36 North end of SR 20 overlap
Longvalemarker 59.31
Laytonvillemarker 69.49 Branscombmarker, Dos Riosmarker
South end of freeway
R84.69 609 Former US 101 north
South Leggettmarker R89.57 614 South Leggettmarker (SR 271) Former US 101
North end of freeway
Leggettmarker T91.25 Former SR 208 south
South end of freeway
Reynolds R101.89 625 Former US 101
Piercymarker R103.81 627 Piercymarker (SR 271) Former US 101
Humboldt
HUM T0.00-R137.44
North end of freeway
Cooks Valleymarker T0.08 Former US 101 south
South end of freeway
Benbowmarker R8.60 636 Benbowmarker
Garbervillemarker R11.13 639A Sprowel Creek Road (US 101 Bus. north) – Garbervillemarker No northbound entrance
R11.50 639B Garbervillemarker, Redwaymarker No southbound entrance
R14.31 642 Redwood Drive (US 101 Bus. south) – Redwaymarker
R17.91 645 Avenue of the Giants (SR 254), Hooker Creek Road – Phillipsvillemarker
R22.44 650 Mirandamarker, Phillipsvillemarker
25.01 653 Salmon Creek Road
Myers Flatmarker 27.94 656 Myers Flatmarker (SR 254)
33.22 661 Weottmarker
35.70 663 South Fork, Honeydewmarker (SR 254)
39.16 667A Avenue of the Giants (SR 254) Southbound exit only
R39.67 667 Redcrestmarker, Holmesmarker
R43.32 671 Pepperwoodmarker, Redcrestmarker, Holmesmarker
R45.90 674 Avenue of the Giants (SR 254), Jordan Road – Pepperwoodmarker
R47.95 676 Stafford Road
Gap in freeway
R51.84 679 Rio Dellmarker, Scotiamarker (SR 283, US 101 Bus. north)
Rio Dellmarker R52.60 680 Davis Street
R53.38 681 Wildwood Avenue (US 101 Bus. south) – Rio Dellmarker
North end of freeway
Altonmarker 57.69
Rohnervillemarker 58.69 Drake Hill Road
South end of freeway
Fortunamarker 59.50 687 Kenmar Road (US 101 Bus. north) – Fortunamarker
60.49 688 12th Street
Fortunamarker 61.53 689 Main Street (US 101 Bus. south)
62.23 690 Palmer Boulevard
Fernbridgemarker 63.10 691 Fernbridgemarker, Ferndalemarker (to SR 211) Northbound exit and southbound entrance
64.30 692 Loletamarker, Fernbridgemarker, Ferndalemarker (SR 211)
65.95 694 Loleta Drive
68.21 696 Hookton Road – Loletamarker
Eurekamarker 70.61 698 College of the Redwoodsmarker
72.03 699 Fields Landingmarker
72.88 700 King Salmon Avenue
73.72 701 Humboldt Hillmarker
74.77 702 Herrick Avenue, Elk River Road
North end of freeway
79.17
Jacobs Avenue
82.68 Indianola Cutoff
Arcatamarker 83.92 Bayside Cutoff
South end of freeway
85.03 712 South G Street Southbound exit and entrance
85.83 713
86.50 714A 14th Street – Humboldt State Universitymarker Northbound exit and southbound entrance
86.94 714B Sunset Avenue – Arcatamarker, Humboldt State Universitymarker Signed as exit 714 southbound
88.27 716A
88.80 716B Giuntoli Lane, Janes Road
R90.13 718 Central Avenue (US 101 Bus. north), North Bank Road (SR 200) – McKinleyvillemarker
McKinleyvillemarker R91.47 719 School Road
R93.00 721 Murray Road
R93.85 722 Arcata-Eureka Airportmarker
R95.62 723 North Central Avenue (US 101 Bus. south) – McKinleyvillemarker
R97.02 725 Crannell Road
98.07 726A Westhaven Drive Northbound exit and southbound entrance
98.36 726B 6th Avenue – Westhavenmarker Signed as exit 726 southbound
Trinidadmarker 100.71 728 Trinidadmarker
R103.37 731 Seawood Drive
R106.06 734 Patricks Point Drive
North end of freeway
122.25 Bald Hill Road – Lady Bird Johnson Grove
South end of freeway
R126.09 753 Newton B. Drury Scenic Parkway Former US 101 north
Del Nortemarker
DN M0.00-46.49
R0.15 765 Newton B. Drury Scenic Parkway Former US 101 south
R3.56 768 Klamath Beach Road (CR D8)
Klamathmarker R4.64 769
North end of freeway
Requamarker 8.18 Minot Creek Road, Requa Road
Crescent Citymarker Elk Valley Road (CR D2), Huston Street
25.84 Elk Valley Road (CR D2) – Elk Valley Rancheria
27.01
Parkway Drive to Washington Boulevard Interchange; northbound exit and entrance
South end of freeway
R27.87 791 Washington Boulevard (CR D1) Southbound exit and northbound entrance
R30.81 794  – Grants Passmarker Northbound exit and southbound entrance
North end of freeway
31.19 Elk Valley Cross Road to US 199 – Grants Passmarker
Lake Earl Drive (CR D3) – Pelican Bay State Prisonmarker
36.26
Smith Rivermarker 39.83 Fred D. Haight Drive (CR D4) – Smith Rivermarker
Sarina Road, Ocean View Drive (CR D5)
46.49 Oregon state line


References

  1. California Highways Highway Statistics
  2. CA Codes (shc:250-257)
  3. California Department of Transportation, State Truck Route List (XLS file), accessed February 2008
  4. California Department of Transportation, Log of Bridges on State Highways, July 2007
  5. California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
  6. California Department of Transportation, California Numbered Exit Uniform System, U.S. Route 101 Freeway Interchanges, Retrieved on 2009-02-07.


External links

Drive the 101 - Contains historical information.


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