U.S. Route 101 in California
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01-1
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U.S. Route 101 ( US 101) is a major north–south United States Numbered Highway, stretching from Los Angeles, California, to Tumwater, Washington. The California portion of 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 national routes established in 1926. Significant portions of US 101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the commemorative route connecting the former Alta California's 21 missions.
Although the highway has been superseded in overall importance for transportation through the state by Interstate 5 (I-5), US 101 continues to be the major coastal north–south route that links the Greater Los Angeles Area, the Central Coast, the San Francisco Bay Area, and the North Coast (Redwood Empire). Generally referred to as "101" by residents of Northern California, in Southern California it is often called "The 101" (pronounced "the one oh one"). The highway has portions designated as the Santa Ana Freeway, the Hollywood Freeway, the Ventura Freeway, South Valley Freeway, and Bayshore Freeway, as well as El Camino Real in many non-freeway segments. The Redwood Highway, the northernmost segment of the highway, begins at the Golden Gate and passes through the world's tallest and only extensive preserves of virgin, old-growth coast redwood trees.
Route description
Route 101 is from:
(a) Route 5 near Seventh Street in Los Angeles to Route 1, Funston approach, and, subject to Section 72.1, the approach to the Golden Gate Bridge in the Presidio of San Francisco via Santa Barbara, San Luis Obispo, and Salinas.
(b) A point in Marin County opposite San Francisco to the Oregon state line via Crescent City.
The definition purposely omits the segment crossing the Golden Gate Bridge, as it is maintained by the Golden Gate Bridge, Highway and Transportation District and is not part of the state highway system. The American Association of State Highway and Transportation Officials (AASHTO)'s U.S. Route logs, along with most maps, have included the bridge as part of US 101, despite California's legal definition. The bridge along with the rest of US 101 is also part of the National Highway System,
a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.
US 101 is part of the California Freeway and Expressway System, and portions of it are eligible to be included in the State Scenic Highway System. It is officially designated as a scenic highway by the California Department of Transportation (Caltrans) from Goleta to Las Cruces in Santa Barbara County, and through Del Norte Coast Redwoods State Park in Del Norte County. This designation means that there are substantial sections of highway passing through a "memorable landscape" with no "visual intrusions", where the potential designation has gained popular favor with the community.
Los Angeles to Ventura
After merging with westbound traffic from the San Bernardino Freeway (I-10), US 101 then proceeds northwest via the Downtown Slot under the northern edge of Los Angeles' Civic Center to SR 110 at the Four Level Interchange. From here, US 101 becomes the Hollywood Freeway. It then passes through the L.A. neighborhoods of Echo Park, Silver Lake, and Los Feliz and heads to Hollywood and up through the Cahuenga Pass before reaching the San Fernando Valley.
US 101 passes right next to the Universal Studios Hollywood and then intersects with SR 134 and SR 170 at the interchange known as the Hollywood Split. Here, the alignment of US 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. 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, US 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). It meets with I-405 in Sherman Oaks. The east–west geographical alignment of the Ventura Freeway and the north–south designation which appears on the 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 where the local E/W signing does not match the Caltrans' proper statewide N/S designation.
After the Conejo Grade, which is a 7% grade incline, the freeway enters the Oxnard Plain and runs concurrent with SR 1 for the first time. Upon reaching Ventura, there is an interchange with SR 126, which runs east to Santa Clarita.
Central Coast
A few miles north of the Gaviota Tunnel, SR 1 splits from US 101 and heads northwest, running along the Pacific coastline parallel and to the west of US 101. US 101 passes through Buellton, Los Alamos, Orcutt, Santa Maria, and Nipomo. South of Santa Maria, US 101 widens from a four-lane highway to a six-lane freeway. SR 166 joins US 101 for about before splitting just north of the city limits, while US 101 continues as a four-lane freeway before reverting to expressway status north of Nipomo.
Farther north, SR 1 rejoins US 101 between Pismo Beach and San Luis Obispo. Then US 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 US 101.
A steep segment (7% grade) between San Luis Obispo and Atascadero is known as the Cuesta Grade. North of Atascadero, the highway joins SR 46 for about through Paso Robles.
From Paso Robles to Salinas, US 101 is an expressway known as the Salinas River Valley Highway, since the Salinas River Valley extends from Santa Margarita to the SR 156 junction in Prunedale. US 101 resumes freeway status between San Miguel and King City, bypassing the smaller towns of Camp Roberts, Bradley, and San Ardo, as well as the San Ardo Oil Field about south of San Ardo. Near this point, the wide agricultural bottomlands of the Salinas Valley begins. North of King City, US 101 once again switches intermittently between freeway and expressway status, passing through Greenfield, Soledad, Gonzales, and Chualar before reaching Salinas. Shortly after leaving Salinas, US 101 joins SR 156 in Prunedale for about . After crossing the San Benito County line, SR 156 splits from US 101 near San Juan Bautista while US 101 continues northward mostly as a four-lane highway until it reaches Gilroy.
San Francisco Bay Area
South Bay and Peninsula
US 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 (I-80) and the Central Freeway near the city's Civic Center. US 101 continues in a northwestern direction on the Central Freeway, and then leaves the freeway, on Mission Street (northbound) and South Van Ness Avenue (southbound), to run north on Van Ness Avenue. At the intersection of Van Ness Avenue and Lombard Street, US 101 heads west on Lombard Street, and then on Richardson Avenue, entering The Presidio, where it becomes a divided highway again (the Presidio Parkway). It is then joined by Route 1 before approaching and crossing the Golden Gate Bridge.
North Bay
After crossing the Golden Gate Bridge, US 101 enters Marin County on an eight- to nine-lane freeway. It climbs the Waldo Grade and passes through the Robin Williams Tunnel, the only one of its kind in (the other being the Gaviota Tunnel in Santa Barbara County). Upon exiting the tunnel, it passes above the hillside town of Sausalito and descends to Richardson Bay, where SR 1 splits from the freeway and heads to the coast. US 101 then passes through Mill Valley and has a junction with the west end of SR 131 (Tiburon Boulevard) that provides a connection with Tiburon and a ferry service to Angel Island. After cresting a small grade, US 101 descends into the Corte Madera Creek watershed and passes through the twin towns of Corte Madera and Larkspur, running by the Larkspur Landing to the east. Another short grade after, US 101 enters San Rafael, where it encounters a partial junction on the western terminus of I-580 before running just east of the downtown area. US 101 climbs over a rise above the Puerto Suello Hill railroad tunnel where the Marin County Civic Center flanks the freeway on the east. Farther north, it passes through Novato, encountering the west endpoint of SR 37. Just before entering Sonoma County, US 101 runs adjacent to the Olompali State Historic Park, which lies on the voter-approved Novato–Petaluma Community Separator that forbids most development.
Now in Sonoma County as a six-lane freeway, US 101 passes through Petaluma, from which SR 116 runs concurrently along the freeway until Cotati where it separates westward. US 101 continues northward through neighboring Rohnert Park. It then enters Santa Rosa, the largest city in Sonoma County, and there it has a junction with SR 12, which serves as a short crosstown freeway within the city. Immediately after, US 101 enters the downtown area of Santa Rosa, passing through the locally-famed Railroad Square on the Robert L. Bishop Memorial Bridge, an Elevated highway. US 101 takes a northwesterly direction as it passes between the unincorporated areas of Mark West and Larkfield-Wikiup, with the Sonoma County Airport in the immediate proximity. Upon reaching Windsor, US 101 becomes a more lightly-traveled four-lane freeway, crossing the Russian River in Healdsburg and then following the river up the Alexander Valley. SR 128 joins US 101 in the town of Geyserville before splitting off just north of Cloverdale. US 101 then heads up a steep hill just before leaving Sonoma County and entering Mendocino County.
The Sonoma-Marin Area Rail Transit corridor shadows US 101 between Larkspur and Windsor.
North Coast
US 101 then widens to a four-lane expressway until the intersection with the western portion of SR 162, where it reverts to a two-lane road. North of Laytonville, US 101 ascends Rattlesnake summit () before a descent to follow the South Fork Eel River and Eel River all the way to Fortuna 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 section of highway with frequent landslides. Caltrans bypassed the most difficult section in 2009 with unique construction of two bridges known collectively as the Confusion Hill Bridges. This project, funded by an emergency act from the State Legislature, moved the highway across the Eel River away from the troubled spots to prevent disruption in commerce and travel from infrequent, but costly, winter closures on the main transportation route to the far North Coast. North of Piercy, the freeway portion again ends and the route narrows down to two lanes, before another stretch of divided highway.
Arriving in Humboldt County, another narrow two-lane portion of US 101 bisects Richardson Grove State Park. Because of the narrow lanes and the Coast redwood that tower over this segment of the highway, standard-sized trucks in compliance with the Surface Transportation Assistance Act (STAA) are prohibited through the park. Just after the park boundary, the highway switches to a short undivided freeway and then eventually a divided freeway just before reaching Garberville. North of Garberville, US 101 reverts to an undivided freeway, which continuing north by northwest, passes through the Humboldt Redwoods State Park, California's third largest State Park and the site of the largest remaining Redwood old growth forest in the world. 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. US 101 again switches to another stretch of divided freeway near the town Pepperwood before reverting to a short, 2-mile (3 km) expressway just north of Stafford. A short freeway then runs through Rio Dell before another short, 3-mile (5 km) expressway.
Shortly before reaching the western terminus of SR 36, US 101 becomes a freeway again between Fortuna and Eureka. North of Humboldt Hill, the road enters the City of Eureka (a potential new freeway cutting through or 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). 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 route becomes an unobstructed freeway south of the center of Arcata. Proceeding north it passes the junction for SR 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 full view of the Pacific Ocean north of the Golden Gate. North of Trinidad, the highway narrows to one lane in each direction after crossing Big Lagoon to pass inland of Stone Lagoon and follow the coastal bar between Freshwater Lagoon and the Pacific Ocean south of Orick. It becomes a undivided freeway through Redwood National and State Parks running inland east of the Prairie Creek Redwoods State Park boundary. The freeway narrows to one lane in each direction at the Klamath River before losing its freeway designation in Klamath. 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 Park 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 the town of Klamath just inside Del Norte County, the highway closely follows the Pacific coast again. In Crescent City, US 101 once again separates into a one-way couplet (L and M Streets) for nine blocks. As it leaves Crescent City, US 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, US 101 intersects the southern terminus of US 199, which heads northeast carrying on the "Redwood Highway" name, passing through the Collier Tunnel and terminating in Grants Pass, Oregon. US 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.
Tolls
Express lanes
, the HOT lanes' hours of operation is weekdays between 5:00 am and 8:00 pm; they are otherwise free and open to all vehicles at other times. Solo drivers are tolled using a congestion pricing system based on the real-time levels of traffic. Two-person carpools and clean air vehicles with a solo driver are charged 50 percent of the posted toll. Carpools with three or more people and motorcycles are not charged. All tolls are collected using an open road tolling system, and therefore there are no toll booths to receive cash. Each vehicle using the HOT lanes is required to carry a FasTrak Flex transponder with its switch set to indicate the number of the vehicle's occupants (1, 2, or 3+). Those with clean air vehicles need to apply for a special FasTrak CAV tag. Solo drivers may also use the FasTrak standard tag without the switch. Drivers without any FasTrak tag will be assessed a toll violation regardless of whether they qualified for free.
The segment of the express lanes in Santa Clara County is co-administered by the Santa Clara Valley Transportation Authority (VTA) while the segment in San Mateo County is co-administered by the separate San Mateo County Express Lanes Joint Powers Authority, and therefore drivers will see two separate toll charges if they cross the county line.
Golden Gate Bridge
History
Juan Bautista de Anza National Historic Trail
Historic route: San Diego to Los Angeles
Historic route in San Diego County
Oceanside–Carlsbad freeway bypass
Historic route in Orange and Los Angeles Counties
In northern Orange County, US 101 followed Harbor Boulevard. U.S. Route 101 left Orange County, traversed southeast Los Angeles County, and entered the City of Los Angeles along Whittier Boulevard.
El Camino Real: Los Angeles to San Francisco
A former route of the highway over the Gabilan Range on the San Juan Grade to San Juan Bautista was bypassed in a 1932 realignment. Instead, shortly after leaving Salinas, US 101 joins SR 156 in Prunedale for about as it crosses the mountains further north, through the Prunedale Cutoff.
Before the Golden Gate Bridge was completed in 1937, there was regular vehicle ferry service across the Golden Gate strait, running from the Hyde Street Pier to Sausalito. Under the , the Golden Gate Bridge is legally not part of US 101. The portion of US 101 starting from Los Angeles ends at "the approach to the Golden Gate Bridge" and then resumes at "a point in Marin County opposite San Francisco" to the Oregon state line. The bridge itself is maintained by the Golden Gate Bridge, Highway and Transportation District instead of Caltrans.
From the 1940s to 1991, various segments of US 101 between Los Angeles and San Francisco were upgraded to either a freeway or expressway. In the Los Angeles area, the first segment of the Hollywood Freeway through the Cahuenga Pass opened in 1940, while the segment from the San Fernando Valley to Downtown Los Angeles opened in 1954, replacing Cahuenga Boulevard. The Ventura Freeway then opened in 1960, replacing Ventura Boulevard. The segment of the original two-lane alignment between Emma Wood State Beach north to the Mobil Pier Undercrossing near Sea Cliff, which followed the historic Rincon Sea Level Road, was the re-signed as part of SR 1.
The last traffic signals along the route between the Los Angeles area and the San Francisco Bay Area were removed in 1991 when the section through downtown Santa Barbara was constructed to freeway standards after years of disagreement over the impact that the original elevated design would have on the community.
In the San Francisco Bay Area, US 101 was originally divided. US 101W followed the same general right-of-way of today's US 101 through the region, primarily along what was originally signed as Bayshore Boulevard. US 101E then generally followed the right-of-way taken by today's I-880 from San Jose to Oakland, then across the Carquinez Bridge to follow what is now SR 37, joining US 101W. The US 101E designation was removed by the 1940s and became SR 17 (later designated as I-880 and the westernmost section I-580), running from San Jose to Oakland and then across the Richmond–San Rafael Bridge. Meanwhile, Bayshore Boulevard was later redesignated as the US 101A bypass and then eventually upgraded to what is now the Bayshore Freeway. The first stretch that was completed between Redwood City and South San Francisco was the Bay Area's first freeway when it opened in 1947. After the entire Bayshore Freeway was completed in the early 1960s, the old alignment along the peninsula was renumbered and renamed as SR 82/El Camino Real.
Various other freeway or expressway bypasses along the California Central Coast were also built. In 1991, the last traffic signal along US 101 between Los Angeles and San Francisco was taken down in Santa Barbara. The primary control city that is listed on freeway signs along northbound US 101 through the Central Coast region remains San Francisco.
As the result of in San Francisco in the 1950s, a direct freeway connection through the city to the Golden Gate Bridge has never been built. The Central Freeway was completed to extend from the Bayshore Freeway to Turk Street in 1959, before the San Francisco Board of Supervisors voted to remove the remainder of the Central Freeway and most other proposed freeways from the city's highway plan. For decades, southbound traffic on US 101 flowed on the one-way Turk Street from Van Ness Avenue to the Central Freeway, while northbound traffic used the parallel Golden Gate Avenue. After the 1989 Loma Prieta earthquake damaged the structure, the segment of the Central Freeway north of Market Street was replaced with the surface-level Octavia Boulevard; traffic on US 101 was then eventually re-routed to exit south of that at Mission Street/South Van Ness Avenue. With no direct freeway along US 101 through the City of San Francisco, the old US 101E/I-880/I-580 route remains as a faster bypass through the Bay Area.
In the wake of the dot-com bubble expansion, the segment of US 101 between Morgan Hill and San Jose, also known as the Sig Sanchez Freeway, expanded to eight lanes between Cochrane Road and SR 85 exits between 2001 and 2003 and a new interchange at Bailey Avenue, which had been planned since the 1970s, opened in 2004. Originally, the was only four lanes (it was planned to have six lanes when opened in 1984). The rebuilt segment was to alleviate the consistent congestion that had expanded as far south as Masten Avenue coming from Gilroy, and as far north as Bernal Road coming from San Jose. Traffic now typically only runs slow between the Bailey Avenue and East Dunne Avenue exits.
The interchange at the beginning of I-280 and I-680 in San Jose was constructed years before its completion. The three flyovers, with no on ramps or off ramps connecting them stood at over US 101 for years in the 1970s (the SR 87/I-280 interchange also had this at the same time). It became the butt of many local jokes. The highlight prank occurred in January 1976, when a 1960 Chevrolet Impala was placed on the highest bridge overnight, where it obviously would be impossible to drive. The following day, San Jose City Councilman Joe Colla was photographed standing next to the car, a photo which was circulated across many newspapers. It has been suggested this stunt helped lead to funding to complete the freeway. In 2010, the interchange was named the Joe Colla Interchange.
Redwood Highway: Marin County to Del Norte County
Freeway segments along the Redwood Highway portion of US 101 are not as prevalent as along the Los Angeles-San Francisco route. A notable segment of the old US 101 alignment is SR 254, also known as the Avenue of the Giants, in Humboldt Redwoods State Park. The freeway bypassing this scenic route, surrounded by towering , was completed in 1960.
A freeway bypass of Cloverdale was constructed in the early 1990s, requiring the relocation of segments of the Northwestern Pacific Railroad. The new roadway along with new frontages and relocated railroad were completed at a cost of $40 million ($ in adjusted for inflation). The highway opened over two weeks in March 1994. The old routing through town is on Cloverdale Boulevard.
Construction on a freeway segment bypassing Willits began in 2013. The bypass around Willits remained controversial because the intended route goes through protected wetlands. Construction was halted by US Army Corps of Engineers in June 2014 and work restarted the following month after Caltrans committed to extensive mitigation of the project. The bypass around Willits opened to traffic in November 2016. The bypass included a viaduct going over a flood plain. The freeway segment cost $459 million to complete ($ in adjusted for inflation), 50% more than what Caltrans first reported when it opened. Because the US 101/SR 20 intersection was originally inside Willits' city limits, SR 20 was then extended along the southern bypassed portion of former US 101. The northern bypassed portion of former US 101 in unincorporated Mendocino County has yet to be turned over to local maintenance, and therefore still exists within the state highway system under the unsigned designation of Route 101U (for "unrelinquished").
The city of Eureka has long resisted a freeway through it.
Future
The Richardson Grove section of US 101 has been proposed for a bypass for many years, but Caltrans conducted a study in 2000 which stated that a bypass was not cost effective and recommended realignment of US 101 within the redwood grove instead to accommodate modern-sized trucks in compliance with the Surface Transportation Assistance Act (STAA).
Names and memorials
Major intersections
See also
Notes
External links
- Bay Area FasTrak – includes toll information on the US 101 Express Lanes, the Golden Gate Bridge and the other Bay Area toll facilities
- Drive the 101: historical information website
- California @ AARoads.com – U.S. Route 101
- California Highways: US 101
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