Interstate 80 in California
|Defined by Streets and Highways Code § 380|
|Maintained by Caltrans|
|Length:||205.07 mi (330.03 km)|
|Restrictions:||No flammable tank vehicles or explosives on the Bay Bridge|
|West end:||US 101 in San Francisco|
|East end:||I‑80 at Nevada state line|
In the U.S. state of California, Interstate 80 (I-80), a major east–west route of the Interstate Highway System, has its western terminus (ending point) in San Francisco, California, United States. From there it heads east across the Bay Bridge to Oakland, where it turns north and crosses the Carquinez Bridge before turning back northeast through the Sacramento Valley. I-80 then goes northeast and east over the Sierra Nevada mountain range before crossing into the state of Nevada within the Truckee (River) Canyon. The speed limit is 65 miles per hour (105 km/h) instead of the state's maximum of 70 mph (110 km/h) since the road passes exclusively through urban and mountainous areas in California.
Interstate 80 has portions designated as the Eastshore Freeway and Alan S. Hart Freeway.
I-80 is recognized as the Dwight D. Eisenhower Highway and a Blue Star Memorial Highway for its entire length. It was part of the Lincoln Highway from Sacramento to Reno (except in vicinity of Donner Summit). I-80 is also known as the Kent D. Pursel Memorial Freeway from the Bay Bridge to the Alameda/Contra Costa County line (named after a former Alameda County Board of Supervisor), the Linus F. Claeys Freeway from SR 4 to the Carquinez Bridge (after a Contra Costa County businessman and philanthropist), the Alan S. Hart Freeway from the Sacramento/Placer County line to the Nevada state line (named after a Caltrans engineer who oversaw the modernization of this segment of I-80), and the Dutch Flat and Donner Lake Wagon Road from Emigrant Gap to Donner Lake (except in vicinity of Donner Summit).
West end in San Francisco
According to the California State Highway system, I-80 begins at its intersection with U.S. Route 101 in San Francisco. However, the San Francisco Skyway (officially known to Caltrans as the Bayshore Viaduct), the elevated freeway that runs from this junction of the James Lick Freeway and the Central Freeway to the Western Approach of the San Francisco–Oakland Bay Bridge at 4th Street, may not be officially part of the Interstate Highway System, although it is consistently shown as I-80 on most maps of San Francisco. The Interstate designation is interpreted by some to actually beginning on the Bay Bridge approach itself, at the location of the Fremont Street off-ramp (previously known as the Terminal Separator Structure (TSS) that once connected it to the Embarcadero Freeway). Thus, the first 1.20 miles (1.93 km) of the signed Interstate may not be officially an actual Interstate, and is secretly defined as State Route 80.
When I-80 was first approved, it was to begin at planned I-280 (CA 1) in Golden Gate Park, head east on the never-built Panhandle Freeway, then run south and southeast on the Central Freeway (US 101) to the San Francisco Skyway. A January 1968 amendment moved I-280 to its present alignment, removed Interstate 480, and truncated the origin point of I-80 to the Embarcadero Freeway (then I-280, formerly I-480). These changes were made on the state level later that year, but Route 80 was only truncated to US 101. (The Central Freeway remained part of US 101, and the Panhandle Freeway became State Route 241. The Panhandle Freeway was later cancelled in the wake of the Freeway Revolts, and the State Route 241 designation has since been reassigned to an unrelated stretch of highway in Orange County) The San Francisco Skyway, which had already been signed as part of I-80, has remained a de facto section of Interstate 80 to the present day and remains listed as part of Interstate 80 in California.
The Eastshore Freeway is a segment of Interstates 80 and 580 along the northeast shoreline of San Francisco Bay in northern California. It begins at the Carquinez Bridge and ends at the MacArthur Maze interchange just east of the eastern end of the San Francisco–Oakland Bay Bridge. Interstate 580 joins the Eastshore Freeway at an interchange known locally as "Hoffman Split" in Albany. The section of the Eastshore Freeway between the MacArthur Maze and the 580 (Hoffman) split in Albany is a wrong-way concurrency where the northbound direction is signed as I-80 East and I-580 West, while the southbound direction is signed as westbound I-80 and eastbound I-580.
The Eastshore Freeway was created in the mid 1950s (construction commenced in 1954) by re-engineering the Eastshore Highway, a thoroughfare constructed in the 1930s (1937–39) as one of the approaches to the Bay Bridge and designated as part of U.S. Route 40. The Eastshore Highway began in El Cerrito at an intersection with San Pablo Avenue at Hill Street between Potrero Avenue and Cutting Blvd., adjacent to the location today of the El Cerrito Del Norte station of BART. It was not a freeway in that access was at intersections with adjoining streets rather than by ramps. The Eastshore Highway ran from El Cerrito to the Bay Bridge along the same routing as today's freeway, although it was much narrower. A causeway was constructed for this purpose by filling in part of the mudflats along the bayshore. In the stretch from University to Ashby Avenues in Berkeley, this resulted in the creation of an artificial lagoon which was developed by the Works Progress Administration in the late 1930s as "Aquatic Park".
The frontage road along the east side of today's Eastshore Freeway between Buchanan Street in Albany and Hearst Avenue in Berkeley retains the name "Eastshore Highway". The terminal segment of the old Eastshore Highway in El Cerrito between Potrero and San Pablo Avenues is today named "Eastshore Blvd.".
Originally, the name "Eastshore Freeway" was applied to what is today known as the "Nimitz Freeway" (I-880) upon its construction in 1947. This freeway was dedicated in 1958 to Admiral Nimitz, and so for a few years in the 1950s prior, the Eastshore Freeway stretched the entire length of the east shore of San Francisco Bay. (Caltrans still shows this in its current highway name book referenced below—see p.16, p.28 of PDF) Until the late 1960s, the Eastshore Freeway was also designated as part of State Highway 17 together with the Nimitz.
The Eastshore Freeway was officially renamed the "Kent D. Pursel Memorial Freeway" in 1968. But this name is hardly recognized as such by the public, and most maps still show the name "Eastshore Freeway".
The interchange where I-580 joins I-80 is still known locally as the "Hoffman Split", an allusion to the time before the I-580 freeway replaced Hoffman Blvd. as the highway leading to the Richmond-San Rafael Bridge. The same interchange today also serves the Buchanan Street exit in Albany.
The section of the Eastshore Freeway between the MacArthur Maze and the 80/580 split suffers from severe traffic congestion during rush hour due to the merger of three freeways (Interstate 80, Interstate 580, and Interstate 880) at the MacArthur Maze.
Legislative Route 242 was defined in 1957, connecting pre-1964 Legislative Route 6 west of Sacramento to pre-1964 Legislative Route 3 northeast of Sacramento. Interstate 880, a bypass of I-80, was approved along Legislative Route 242 by the American Association of State Highway Officials on November 10, 1958. The Route 880 designation was adopted by the state in the 1964 renumbering; the bypass was completed in 1972.
Interstate 80 has run north of Sacramento on the Beltline Freeway which was originally Interstate 880, a bypass freeway. The I-80 routing alignment was moved from a route through Sacramento, now Interstate 80 Business, after the proposed Interstate 80 replacement of the North Sacramento Freeway was cancelled. The Beltline Freeway runs northeast from the junction of I-80 and I-80 Business (U.S. Route 50 there) in West Sacramento across Interstate 5 to its junction northeast of Sacramento with I-80 Business (which is State Route 51). State Route 244 heads east as a short freeway spur from that interchange.
Sierra Nevada portion
Crossing the Sierra Nevada, I-80 regularly gets snow at higher elevations from fall to spring. Caltrans sometimes requires vehicles to use snow tires, snow chains or other traction devices in the mountains during and after snowstorms. Checkpoints are often set up to enforce chain restrictions on vehicles bound for icy or snowy areas. When chain restrictions are in effect vehicles must have chains on the driving wheels, except 4WD vehicles with snow tires. Additionally, during the winter season, trucks are required to carry chains whether or not controls are in force. When controls are in effect or possible, trucks are checked for chains in their possession at Applegate (eastbound) and Mogul, NV (westbound).
I-80 crosses the Sierra Nevada crest at Donner Summit (also known as Euer Saddle) at an elevation of 7,239 feet (2,206 m) westbound and 7,227 feet (2,203 m) eastbound. The summit is located in Nevada County, California. The pass is generally open year-round; it is plowed in winter, but may temporarily close during the worst snowstorms. The older, original Lincoln Highway route (Historical US 40) over Donner Pass is about two miles (3 km) to the south; this highway was replaced as the official trans-Sierra route by I-80 in 1964. Although the current Donner Pass is lower, Euer Saddle was chosen for the interstate because of more gradual approaches.
Portions of I-80 through the Sierra-Nevada mountain range are in rough condition. The concrete road surface is badly cracked and eroded due to severe weather that occurs in the area and a result of an outdated concrete paving system of the 1950s and 1960s where the concrete was poured in 40 foot sections, as compared to a monolithic pour, (as is used in today's road construction). All the older concrete highways across the nation also suffer from this. Work is underway to fix the driving lanes.
|City and County of San Francisco||0.00–
|1||US 101 – San Jose, Golden Gate Bridge||Westbound exit and eastbound entrance; signed as exits 1A (south) and 1B (north); west end of I-80; US 101 north exit 433B, south exit 433|
|1C||Ninth Street – San Francisco Civic Center||Signed as exit 433C on US 101 northbound|
|1||Seventh Street||Eastbound exit and westbound entrance|
|2A||Fifth Street||Westbound exit and eastbound entrance|
|2B||Fourth Street, Embarcadero||Eastbound exit and westbound entrance|
|2C||Harrison Street, Embarcadero||Westbound exit and eastbound entrance; former Fremont Street exit|
|2D||Fremont Street, Folsom Street||Westbound exit and eastbound entrance; former Main Street / SR 480 exit; west end of I-80; east end of SR 80|
|San Francisco Bay||San Francisco–Oakland Bay Bridge (west span)|
|City and County of San Francisco||4.18||6.73||4A||Treasure Island, Yerba Buena Island||Eastbound exit and westbound entrance only; westbound exit and eastbound entrance are via exit 4/4B|
|4B||Yerba Buena Island||Signed as exit 4 westbound; eastbound exit and westbound entrance currently closed due to construction of new eastern span and the removal of the old span|
|San Francisco Bay||5.31||8.55||San Francisco–Oakland Bay Bridge (east span)|
|Alameda||Oakland||7.81||12.57||8A||West Grand Avenue, Maritime Street|
|8.11||13.05||I‑880 south (Nimitz Freeway) – Alameda, San Jose||Westbound exit is part of exit 8B; I-880 exits 46A-B|
|8.11||13.05||8B||I‑580 east (MacArthur Freeway) to SR 24 – Downtown Oakland, Hayward, Stockton||West end of I-580 overlap; westbound exit and eastbound entrance; I-580 west exit 19A|
|Emeryville||9.10||14.65||9||Powell Street – Emeryville||No eastbound exit from I-880 north|
|Berkeley||9.89||15.92||10||SR 13 (Ashby Avenue) / Shellmound Street||Shellmound Street accessible eastbound only|
|11.13||17.91||11||University Avenue – Berkeley||Serves UC Berkeley|
|Albany||12.61||20.29||13A||Buchanan Street – Albany||Signed as exit 13 westbound|
|12.91||20.78||13B||I‑580 west – Point Richmond, San Rafael||Eastbound exit and westbound entrance; east end of I-580 overlap|
|—||Pierce Street||Former eastbound exit and entrance; demolished as part of reconstruction of I-80 / I-580 interchange in Albany|
|Contra Costa||Richmond||13.57||21.84||14A||Central Avenue – El Cerrito|
|El Cerrito||15.02||24.17||15||Potrero Avenue||Eastbound exit and westbound entrance|
|Richmond||Cutting Boulevard (SR 123)||Westbound exit and eastbound entrance|
|—||Cutting Boulevard||HOV access only; westbound left exit and eastbound entrance|
|15.97||25.70||16A||MacDonald Avenue||Eastbound exit and westbound entrance|
|16.31||26.25||16B||San Pablo Avenue, Barrett Avenue||Signed as exit 16 westbound; Barrett Avenue formerly signed as Central Richmond|
|16.76||26.97||17||Solano Avenue||Eastbound exit and westbound entrance|
|McBryde Avenue||Westbound exit only|
|San Pablo||17.69||28.47||18||San Pablo Dam Road|
|18.60||29.93||19A||El Portal Drive|
|Richmond||19.33||31.11||19B||Hilltop Mall, Auto Plaza||Formerly signed as Hilltop Drive|
|Richmond–Pinole line||—||Richmond Parkway||HOV access only; eastbound left exit and westbound entrance|
|Pinole||19.95||32.11||20||To I‑580 west / Richmond Parkway, Fitzgerald Drive||Unconstructed SR 93|
|21.86||35.18||22||Pinole Valley Road|
|Hercules||23.41||37.67||23||SR 4 east – Hercules, Stockton||No westbound exit; SR 4 exit 1B|
|24.04||38.69||24||Willow Avenue – Rodeo|
|26.10||42.00||26||To SR 4 east / Cummings Skyway – Martinez, Concord|
|26.84||43.19||27||Pomona Street – Crockett, Port Costa|
|Carquinez Strait||27.49||44.24||Carquinez Bridge|
|29A||SR 29 (Sonoma Boulevard)||Eastbound exit and westbound entrance|
|29A||Maritime Academy Drive||Westbound exit and entrance|
|29B||Sequoia Avenue||Eastbound exit only|
|29.27||47.11||29C||Magazine Street||Signed as exit 29B westbound|
|29.71||47.81||30A||I‑780 to I‑680 / Curtola Parkway – Benicia, Martinez||Former I-680 south; I-780 exits 1A-B|
|29.93||48.17||30B||Frontage Road (to Benicia Road)||Eastbound exit only; former SR 141|
|30.37||48.88||30C||Georgia Street – Central Vallejo||Signed as exit 30B westbound|
|30.72||49.44||31A||Springs Road, Solano Avenue|
|30.98||49.86||31B||Tennessee Street – Mare Island|
|31.92||51.37||32||Redwood Parkway, Redwood Street||Signed as exits 32A (east) and 32B (west) eastbound|
|33.12||53.30||33||SR 37 west / Auto Mall Columbus Parkway – Napa, San Rafael, Novato||Signed as exits 33A (Auto Mall Columbus Parkway) and 33B (SR 37) westbound; SR 37 exits 21A and 21C|
|34.12||54.91||Hunter Hill Rest Area (Westbound only)|
||No major junctions|
|Solano||35.59||57.28||36||American Canyon Road, Hiddenbrooke Parkway|
|Fairfield||38.88||62.57||39A||Red Top Road||Signed as exit 39 eastbound|
|39B||SR 12 west – Napa, Sonoma||West end of SR 12 overlap; eastbound exit is via exit 39|
|40||Green Valley Road||Westbound exit is part of exit 41|
|I‑680 south – Benicia, Martinez, San Jose||Former SR 21; I-680 north exits 71A-B|
|41||Suisun Valley Road, Pittman Road|
|43.32||69.72||43||SR 12 east – Suisun City, Rio Vista||East end of SR 12 overlap; westbound exit is via exit 43|
|43.64||70.23||44A||Abernathy Road, Suisun Parkway||Signed as exit 43 westbound|
|44.22||71.17||44B||West Texas Street, Rockville Road – Fairfield||Signed as exit 44 westbound|
|46.68||75.12||47||Waterman Boulevard, Air Base Parkway – Travis AFB||Signed as exits 47A (Air Base Parkway) and 47B (Waterman Boulevard) westbound|
|48.30||77.73||48||North Texas Street, Manuel Campos Parkway – Fairfield|
|50.62||81.46||51A||Lagoon Valley Road, Cherry Glen Road|
|Vacaville||51.16||82.33||51B||Peña Adobe Road|
|52||Cherry Glen Road||Westbound exit only|
|52.81||84.99||53||Alamo Drive, Merchant Street|
|53.97||86.86||54B||Peabody Road, Mason Street – Elmira|
|54.74||88.10||55||Monte Vista Avenue, Allison Drive, Nut Tree Parkway|
|55.86||89.90||56||I‑505 north – Winters, Redding||I-505 exits 1A-B|
|57.29||92.20||57||Leisure Town Road, Vaca Valley Parkway|
|58.80||94.63||59||Meridian Road, Weber Road|
|60.12||96.75||60||Midway Road, Lewis Road|
|Dixon||64.04||103.06||63||Dixon Avenue, West A Street – Dixon|
|64.38||103.61||64||Pitt School Road|
|65.70||105.73||66A||SR 113 south (First Street) / Currey Road – Dixon||West end of SR 113 overlap; signed as exit 66 eastbound|
|66B||Milk Farm Road||Westbound exit only|
|67.22||108.18||67||Pedrick Road (CR E7)|
|70.16||112.91||70||SR 113 north (Vic Fazio Highway) – Woodland||East end of SR 113 overlap; SR 113 exits 26A-B|
|70.50||113.46||71||UC Davis (Old Davis Road)|
|Yolo||Davis||72.44||116.58||72||Richards Boulevard – Downtown Davis||Signed as exits 72A (south) and 72B (north) westbound|
|73.05||117.56||73||Olive Drive||Westbound exit only; former US 40 west / US 99W north|
|74.89||120.52||75||Mace Boulevard (CR E6)|
|77.99||125.51||78||Road 32A, East Chiles Road|
|Yolo Bypass||Yolo Causeway|
|West Sacramento||81.39||130.98||81||West Capitol Avenue, Enterprise Boulevard – West Sacramento||West Capitol Avenue was former US 40 east / US 99W south|
|82.12||132.16||82||I‑80 Bus. east (Capital City Freeway) / US 50 east (El Dorado Freeway) – Sacramento, South Lake Tahoe||Former US 40 east / US 99W south / I-80 east; I‑80 Bus./US 50 exits 1A-B|
|83.46||134.32||83||Reed Avenue (SR 84) – West Sacramento|
|Sacramento||Sacramento||85.29||137.26||85||West El Camino Avenue|
|86.48||139.18||86||I‑5 to SR 99 – Sacramento, Los Angeles, Redding||I-5 exit 522|
|87.58||140.95||88||Truxel Road||Serves Sleep Train Arena|
|91.56||147.35||91||Raley Boulevard, Marysville Boulevard – Del Paso Heights|
|94||Light Rail Stations (Roseville Road, Watt/I-80 West, and Watt/I-80)||Westbound left exit and eastbound left entrance; also accessible as part of exit 93 westbound|
|94A||Watt Avenue||Westbound exit is part of exit 95|
|94B||Auburn Boulevard (SR 244)||Westbound exit is part of exit 95|
|94.94||152.79||95||I‑80 Bus. west (Capital City Freeway) to SR 99 south – Sacramento||Westbound exit and eastbound entrance; eastbound exit is part of exit 94A; former I-80 west|
|98.38||158.33||98||Greenback Lane, Elkhorn Boulevard (CR E14)|
|Citrus Heights||100.62||161.93||100||Antelope Road|
|Placer||Roseville||102.20||164.47||102||Riverside Avenue, Auburn Boulevard – Roseville, Citrus Heights||Former US 40 / SR 65|
|103.91||167.23||103||Douglas Boulevard, Sunrise Avenue (CR E2)||Signed as exits 103A (east) and 103B (west) eastbound|
|105.00||168.98||105A||Atlantic Street, Eureka Road||Signed as exits 105A (Eureka Road) and 105B (Atlantic Street) westbound|
|105.59||169.93||105B||Taylor Road, Pacific Street||Westbound exit is via exit 105A|
|106.09||170.74||106||SR 65 north – Lincoln, Marysville|
|109.35||175.98||109||Sierra College Boulevard (CR E3)|
|Loomis||110.65||178.07||110||Horseshoe Bar Road – Loomis|
|112.28||180.70||112||Penryn Road – Penryn|
|115.74||186.27||115||Newcastle Road – Newcastle|
|Lincoln||116.23||187.05||116||SR 193 west – Lincoln||West end of SR 193 overlap|
|Auburn||118.84||191.25||118||Ophir Road||Westbound exit and eastbound entrance|
|119.22||191.87||119A||Maple Street, Nevada Street – Auburn|
|119.47||192.27||119B||SR 49 (SR 193 east) – Grass Valley, Placerville||East end of SR 193 overlap|
|120.87||194.52||120||Lincoln Way, Russell Road||No eastbound entrance|
|121.40||195.37||121||Auburn Ravine Road – Foresthill|
|124.14||199.78||124||Dry Creek Road|
|125.36||201.75||125||Clipper Gap, Meadow Vista (Placer Hills Road)|
|130.52||210.05||130||West Paoli Lane|
|131.25||211.23||131||Weimar Cross Road|
|Colfax||133.72||215.20||133||Canyon Way, Placer Hills Road|
|135.06||217.36||135||SR 174 – Colfax, Grass Valley|
|140.28||225.76||139||Rollins Lake Road, Magra Road||Westbound exit and entrance|
|140||Secret Town Road, Magra Road|
|143.30||230.62||143||Magra Road – Gold Run|
|144.13||231.95||144||Gold Run||Westbound exit and eastbound entrance|
|143.68||231.23||Gold Run Rest Area|
|150.93||242.90||150||Drum Forebay Road|
|157.99||254.26||158A||Emigrant Gap||Signed as exit 158 westbound|
|158.79||255.55||158B||Laing Road||Eastbound exit only|
|161.47||259.86||161||SR 20 west – Nevada City, Grass Valley|
|163.96||263.87||164||Eagle Lakes Road|
|Placer||165.45||266.27||165||Cisco Grove (Cisco Road)|
|166.73||268.33||166||Big Bend||Eastbound exit only|
|168.13||270.58||168||Rainbow Road – Big Bend|
|Nevada||174.18||280.32||174||Soda Springs, Norden|
|176.77||284.48||176||Boreal Ridge Road – Castle Peak|
|177.22||285.21||Donner Summit Rest Area|
|180.09||289.83||180||Donner Lake (Donner Lake Road)|
|184.91||297.58||184||Donner Pass Road|
|185.86||299.11||185||SR 89 south – Tahoe City, Lake Tahoe, Squaw Valley||West end of SR 89 overlap|
|Truckee||186.67||300.42||186||Central Truckee||No eastbound entrance|
|187.99||302.54||188A||Truckee||Eastbound exit and westbound entrance|
|188.30||303.04||188B||SR 89 north / SR 267 south – Sierraville, Lake Tahoe||East end of SR 89 overlap; signed as exit 188 westbound|
|190.96||307.32||Agricultural Inspection Station (westbound only)|
|Sierra||205.07||330.03||I‑80 east – Reno||Continuation into Nevada|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Faigin, Daniel P. (April 28, 2014). "Interstate Highway Types and the History of California's Interstates". California Highways. Retrieved April 28, 2014.[self-published source]
- Faigin, Daniel P. "Routes 73 through 80: Interstate 80". California Highways. Retrieved January 26, 2013.[self-published source]
- California Code of Regulations, Title 21, Division 2, Chapter 1, Article 2 § 1402.1
- Warring, KS (April 18, 2008). "Interstate 80 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Archived from the original (PDF) on April 23, 2014. Retrieved April 28, 2014.
- Staff (January 2014). 2013 Named Freeways, Highways, Structures and Other Appurtenances in California (PDF). California Department of Transportation. pp. 42–44. Retrieved January 31, 2015.
- National Highway System: San Francisco–Oakland CA (PDF) (Map). Federal Highway Administration. April 2004.[dead link]
- Staff. "California Road System (CRS) Maps". California Department of Transportation. Retrieved November 2007.
- Staff. "Emeryville Comes of Age: 1930s to 1960s". Official Website. City of Emeryville, CA. Retrieved July 21, 2010.
- "California Highways: Legislative Route 242". Cahighways.org. Retrieved January 26, 2013.[self-published source]
- Staff (2007). "Chain Controls". California Department of Transportation. Retrieved September 3, 2010.
- District 3 (2007). "Winter Operations". California Department of Transportation. Retrieved September 3, 2010.
- Staff. "Elevation and Location of Summits and Passes in California" (XLS). California Department of Transportation.[dead link]
- Staff. "Get Across I-80". California Department of Transportation. Retrieved September 3, 2010.[dead link]
|Wikimedia Commons has media related to Interstate 80 in California.|
Route map: Bing
- Caltrans District 4: Current major projects on Route 80[dead link]
- Live Toll Prices for San Francisco-Oakland Bay Bridge