Interstate 80 in California

Last updated

I-80 (CA).svg
Interstate 80
Dwight D. Eisenhower Highway
Interstate 80 in California
I-80 highlighted in red
Route information
Defined by Streets and Highways Code § 380
Maintained by Caltrans
Length205.07 mi [1]  (330.03 km)
ExistedJuly 1, 1964 [2] –present
National Forest Scenic Byway.svg Yuba-Donner Scenic Byway
RestrictionsNo flammable tank vehicles or explosives on the Bay Bridge [3]
Major junctions
West endUS 101 (1961 cutout).svg US 101 in San Francisco
East endI-80.svg I-80 at Nevada state line near Verdi, NV
Counties San Francisco, Alameda, Contra Costa, Solano, Napa, Yolo, Sacramento, Placer, Nevada, Sierra
Highway system
California 79.svg SR 79 US 80 (1961 cutout).svg US 80

Interstate 80 (I-80) is a transcontinental Interstate Highway in the United States, stretching from San Francisco, California, to Teaneck, New Jersey. The segment of I-80 in California runs east from San Francisco 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 traverses the Sierra Nevada, cresting at Donner Summit, before crossing into the state of Nevada within the Truckee River Canyon. The speed limit is at most 65 miles per hour (105 km/h) along the entire route instead of the state's maximum of 70 mph (110 km/h) as most of the route is in either urban areas or mountainous terrain. I-80 has portions designated as the Eastshore Freeway and Alan S. Hart Freeway.


Throughout California, I-80 was built along the corridor of U.S. Route 40 (US 40), eventually replacing this designation entirely. The prior US 40 corridor itself was built along several historic corridors in California, notably the California Trail and Lincoln Highway. The route has changed from the original plans in San Francisco due to freeway revolts canceling segments of the originally planned alignment. Similarly in Sacramento, the freeway was re-routed around the city after plans to upgrade the original grandfathered route through the city to Interstate highway standards were cancelled.

Route description

I-80 is recognized as the Dwight D. Eisenhower Highway in the western United States and a Blue Star Memorial Highway for its entire length. In California, it follows the original corridor of the Lincoln Highway from Sacramento to Reno (with minor deviations near Donner Summit). I-80 is part of the California Freeway and Expressway System, [4] and is part of the National Highway System, [5] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration. [6] I-80 is also known as the Dutch Flat and Donner Lake Wagon Road from Emigrant Gap to Donner Lake. [7] The segment of I-80 from Emigrant Gap to Truckee also forms part of the Yuba-Donner Scenic Byway, a National Forest Scenic Byway. [8]

San Francisco Bay Area

The western terminus of Interstate 80 in San Francisco, viewed from northbound US 101 Interstate80westernend.jpg
The western terminus of Interstate 80 in San Francisco, viewed from northbound US 101

According to the California Streets and Highways Code, most maps, and local signs, I-80 begins at the interchange with U.S. Route 101 in San Francisco. However, federal records place the western terminus of I-80 at the western approach to the San Francisco–Oakland Bay Bridge, at the location of the Fremont Street off-ramp (previously known as the Terminal Separator Structure that once connected it to the Embarcadero Freeway). [9] [10] The federal and state governments disagree as to whether the first 1.20 miles (1.93 km) of the signed Interstate, known as the San Francisco Skyway or Bayshore Viaduct, are actually part of the Interstate Highway System, [9] [10] although it is consistently shown as I-80 on most maps of San Francisco. [10]

Eastshore Freeway

The Eastshore Freeway is a segment of Interstates 80 and 580 along the northeast shoreline of San Francisco Bay. It runs from the MacArthur Maze interchange just east of the eastern end of the San Francisco–Oakland Bay Bridge to the Carquinez Bridge. Interstate 580 splits from the Eastshore Freeway at an interchange known locally as the "Hoffman Split" in Albany. The section of the Eastshore Freeway between the MacArthur Maze and the 580 (Hoffman) split between 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. This segment suffers from severe traffic congestion during rush hour due to the merger of three freeways (I-80, I-580, and I-880) at the MacArthur Maze.

Eastshore Freeway in Berkeley, view south towards Pacific Park Plaza in Emeryville I-80 Eastshore Fwy.jpg
Eastshore Freeway in Berkeley, view south towards Pacific Park Plaza in Emeryville

The Eastshore Freeway was created in the mid 1950s [11] (construction commenced in 1954, last segment completed May 10, 1960 [12] ) by re-engineering the Eastshore Highway, a thoroughfare constructed in the 1930s (1934–37) as one of the approaches to the Bay Bridge and designated as part of U.S. Route 40. [13] The Eastshore Highway began in El Cerrito at an intersection with San Pablo Avenue at Hill Street between Potrero Avenue and Cutting Blvd., [14] 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 Boulevard".

Originally, the name "Eastshore Freeway" was also applied to what is today known as the "Nimitz Freeway" (I-880) from the beginning of 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. [15] [16] Until the late 1960s, the Eastshore Freeway was also designated as part of State Route 17 (SR 17) together with the Nimitz Freeway. [17]

Central Valley

Bats flying from under the Interstate 80 elevated causeway in Yolo County, California. Bat flight.jpg
Bats flying from under the Interstate 80 elevated causeway in Yolo County, California.

This section of I-80 has a top speed of 65 mph (105 km/h), unlike California's top speed limit of 70 mph (110 km/h), common in rural freeways. [18] I-80 is a six- to eight-lane freeway with carpool lanes in Fairfield from exit 39A (Red Top Road) to exit 47 (Air Base Parkway). [19]

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

Sierra Nevada

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. [20] 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. [21] Additionally, during the winter season, trucks are required to carry chains whether or not controls are in force.

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 Donner Summit Rest Area is located at this point. [22] [23] 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 US 40/Lincoln Highway route 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 that aided construction to Interstate Highway standards, which do not allow the sharp curves used by the Donner Pass Road. The grade is 3-6% for 30 miles. [24]


Historic routing

A sign in California recognizing an old alignment of US 40 Image-Historic U.S. Hwy 40 sign only.jpg
A sign in California recognizing an old alignment of US 40

US 40 (1961 cutout).svg

U.S. Route 40

Location San Francisco–Nevada state line

In California I-80 was built along the line of, and eventually replaced, U.S. Route 40. The US 40 designation was eliminated in the state as part of the 1964 state highway renumbering. US 40 was one of the original California routes designed in 1926, although its west end was in Oakland, California with US 101E (then SR 17, then I-5W, now I-580/I-880) prior to the San Francisco–Oakland Bay Bridge opening in 1936. An auto ferry ran from Berkeley to San Francisco, signed at the ferry landings for U.S. 40. After the Bay Bridge's construction, US 40, along with US 50, were extended along the bridge to connect with US 101. [25] The auto ferry service was then discontinued.

US 40 and US 50 both followed the Bay Bridge and the routes split on what is the present day MacArthur Maze in Oakland, California. US 50 continued southeast on present-day I-580 to Stockton and US 40 closely followed the route of present-day I-80. When reaching Sacramento, California, US 40 and US 50 rejoined, US 50 running concurrently with former US 99 from Stockton to Sacramento. US 40 then again split with US 50 in Downtown Sacramento and closely followed the route of present-day Business I-80, which was I-80 from 1957 to 1981, when I-80 was realigned along former I-880, routing along what was then the outskirts of Sacramento. US 40 then closely followed I-80 through the Sierra Nevada into Nevada.

A portion of old US 40 near Donner Lake is still intact and is an alternate route of I-80. [26] It begins near Soda Springs and ends at Truckee, California. At one point, it travels right by Donner Lake, unlike I-80, which ascends higher in the Sierra Nevada north of historic US 40.


Original routing in San Francisco

The Panhandle Freeway was in the 1948 SF Freeways plan. 1948 San Francisco trafficways plan.jpg
The Panhandle Freeway was in the 1948 SF Freeways plan.

When I-80 was first approved, it was to begin at planned I-280 (SR 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. The Panhandle Freeway was to be routed through Hayes Valley, passing through Golden Gate Park and terminating at proposed I-280, now SR 1. [27] In 1964, community oppositions forced CalTrans to abandon the Panhandle Freeway project. A January 1968 amendment moved I-280 to its present alignment, degraded Interstate 480, to a state highway, and truncated the origin point of I-80 to the Embarcadero Freeway (then I-280, formerly I-480). [28] Prior to that truncation, I-80 had been defined as from "Route 280 in San Francisco to the Nevada state line near Verdi, Nevada, passing near Division Street in San Francisco, passing near Oakland, via Albany, via Sacramento, passing near North Sacramento, passing near Roseville, via Auburn, via Emigrant Gap, via Truckee and via the Truckee River Canyon," and certain maps had been shown of I-80 running concurrently with US 101 to Fell Street. [29] 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 I-80 to the present day and remains listed as part of the Interstate in California.

In 2000, the San Francisco Chronicle published an article about the proposed construction of a new freeway through San Francisco. According to the article, the suggested 19th Avenue tunnel would run five miles (8.0 km), from Junipero Serra Boulevard through Golden Gate Park and up to Lake Street, with exits at Brotherhood Avenue, Ocean Avenue, Quintara Street, Lincoln Way, and Geary Boulevard. [30] The Van Ness tunnel would run almost two miles (3.2 km), from about Fell Street to Lombard Street, with exits at Broadway and Geary Boulevard. Along Oak and Fell, the planners suggested an underground road running more than half a mile (0.8 km) from Laguna to Divisadero streets. However, the roads would violate the long-standing general plan for San Francisco, which calls for no new highway capacity. In March 2015, this proposed route was adopted by the CTC. [29] [ failed verification ]


Prior to the construction of I-80, the US 40 corridor suffered from frequent car accidents. Reasons included the many traffic lights and stop signs that seemed to appear out of nowhere. Caltrans listed five intersections with high accident rates and claimed construction of I-80 would reduce such accidents. According to a study done on I-80 in Vallejo from 1955 and 1956, prior to the freeway construction, and 1957 and 1958, after the freeway was constructed, the accident rate dropped 73% and there were 245 fewer accidents on the then-new I-80 freeway. [31]

The new route also made traveling across the Sierra Nevada far easier. Before construction, US 40 was a two-lane undivided highway with winding turns. [32] This route was often closed in the winter because of the high elevation of the Donner Pass (7239 feet), and drivers had to use a much longer route to the north, US 40 ALT, now SR 70 using the Beckwourth Pass, at an elevation of 5221 ft. [33] Driving across the Sierra Nevada became far easier with the construction of I-80 across Donner Summit, since that pass is closed only for intense snowstorms.[ citation needed ]

Truncation of US 40

In 1964, Caltrans desired to reduce the number of designated routes in the California state highways system. [34] The Interstate Highway system, designed and built starting in 1956, was adding on to the already increased number of U.S. Routes and state highways. [35] In result, the 1964 renumbering truncated US 50 to West Sacramento. The entire route of US 40 was deleted in the western United States due to the completion of I-80. [35] Also, the number "40" was duplicated along I-40, at that time, a newly built route in southeastern California. I-40 was to be numbered I-30, but the American Association of State Highway and Transportation Officials (AASHTO) rejected the numbering. [36]

The state law authorizing the renumbering was passed on September 20, 1963. Signage changes took place by July 1, 1964, and US 40 was decommissioned. [34] US 40 was one of the first US Routes to be decommissioned completely in California. [37]

Former alignments in Sacramento

I-880 (CA).svg

Interstate 880

Location West SacramentoSacramento

In the Sacramento area, I-80 has been realigned to many routes. [29] In 1964, I-80 used the old US 40/99E freeway, the current I-80 BUS, while a year later, I-80 was proposed to be realigned along a new freeway that would run south of the former I-80/I-880 northeast of Sacramento, run to south of the American River, and rejoin I-80. This was necessary because the 1964 I-80 failed to meet Interstate standards. [29]

In 1972, I-880 was completed, while a part of the new alignment of I-80 was completed but not open to traffic, where there was a long bridge to nowhere. [38] From 1972 to 1980, Interstate 880 began in West Sacramento as a fork from the original I-80, continues northeast over the Sacramento River to its interchange with I-5, continues east through the communities of North Sacramento and Del Paso Heights and ends at an interchange with the Roseville Freeway (I-80). The now-designated Capital City Freeway was then the original I-80 routing, continuing southwest directly into downtown Sacramento. I-80 was then re-routed along the Beltline Freeway in 1983, while the Capital City Freeway became I-80 Business, also I-305 and SR 51. I-880 would have intersected SR 244 and then US 50, but in 1979, the Sacramento City Council voted to delete the proposed I-80 alignment for rail transit. The constructed 244/51/80 split is now used for three railroad stations. In 1980, the new I-80 alignment was deleted from the Interstate system. SR 244 was then truncated from its proposed alignment to the only freeway section of the abandoned project in 1994, which is about a mile long. In 1982–84, I-880 was reassigned to SR 17 running from Oakland to San Jose, after two to four years of inactivity.

Bay Bridge replacement

Collapsed upper deck section of the San Francisco-Oakland Bay Bridge, 1989 Bay Bridge collapse.jpg
Collapsed upper deck section of the San Francisco–Oakland Bay Bridge, 1989

On October 17, 1989, the Loma Prieta earthquake was responsible for 63 deaths and 3,757 injuries. The San Francisco–Oakland Bay Bridge, which is part of I-80, suffered severe damage, as a 76-by-50-foot (23 m × 15 m) section of the upper deck on the eastern cantilever side fell onto the deck below. The quake caused the Oakland side of the bridge to shift 7 inches (18 cm) to the east, and caused the bolts of one section to shear off, sending the 250-short-ton (230 t) section of roadbed crashing down like a trapdoor. [39] Caltrans removed and replaced the collapsed section, and re-opened the bridge on November 18. [40]

New eastern span of Bay Bridge, 2013 San Francisco-Oakland Bay Bridge- New and Old bridges.jpg
New eastern span of Bay Bridge, 2013

In 2002, due to the risk of a future large earthquake, Caltrans started building a new eastern span. The department advertised that the new span of the Bay Bridge used a new earthquake-resisting technique that would not collapse in an earthquake similar to the Loma Prieta earthquake. [41] The new eastern span opened on September 2, 2013, at an estimated cost of $6.4 billion.

Exit list

CountyLocationmi [1] kmExit [1] DestinationsNotes
City and County of San Francisco 0.00–
1US 101 (1961 cutout).svg US 101  San Jose, Golden Gate Bridge Signed as exits 1A (south) and 1B (north); western terminus; US 101 north exit 433B, south exit 433
Seventh StreetEastbound exit and westbound entrance
1CNinth Street Civic Center Westbound exit and eastbound entrance
2AFifth StreetWestbound exit and eastbound entrance
2Fourth StreetEastbound exit and westbound entrance
2BHarrison Street / Embarcadero Westbound exit and eastbound entrance; former Fremont Street exit
2CFremont Street / Folsom StreetWestbound exit and eastbound entrance; former Main Street / SR 480 exit
San Francisco Bay 3.756.04 San Francisco–Oakland Bay Bridge (west span)
4.186.734A Treasure Island Eastbound left exit and westbound entrance
Yerba Buena Tunnel
4B Yerba Buena Island Former eastbound exit; closed as part of the Bay Bridge eastern span replacement
4 Treasure Island, Yerba Buena Island No eastbound exit
5.318.55 San Francisco–Oakland Bay Bridge (east span; westbound toll only)
Alameda Oakland 7.8312.608AI-880 (1961).svgAirport Sign.svg I-880 south (Nimitz Freeway) Alameda, San Jose Eastbound exit and westbound entrance; I-880 exit 46A; access to Oakland International Airport; former SR 17 south
Bay Bridge Toll Plaza parking lot onlyAccess via the HOV lane; entrance to Bay Bridge via left turn at a stop sign at the west side of the complex
8AWest Grand Avenue / Maritime StreetWestbound signage; eastbound access via exit 8A/I-880
8.1313.088BI-580 (1961).svgTo plate green.svg
California 24.svg
I-580 east (MacArthur Freeway) to SR 24  Downtown Oakland, Hayward, Stockton
Eastbound signage; I-580 west exit 19A
I-580 (1961).svgI-880 (1961).svgAirport Sign.svg I-580 east (MacArthur Freeway) / I-880 south (Nimitz Freeway) Downtown Oakland, Hayward, Stockton, Alameda, San Jose Western end of I-580 overlap; I-880 was former SR 17 south; westbound left exit and eastbound entrance; I-880 exit 46B; access to Oakland International Airport
Emeryville 9.1014.659Powell Street – Emeryville No eastbound exit from I-880 north
Berkeley 9.8915.9210California 13.svg SR 13 (Ashby Avenue) / Shellmound StreetShellmound Street accessible eastbound only
11.1317.9111University Avenue – Berkeley Serves UC Berkeley
11.9119.1712Gilman Street
Albany 12.6120.2913ABuchanan Street – Albany Signed as exit 13 westbound; Buchanan Street not signed westbound
12.9120.7813BI-580 (1961).svg I-580 west Point Richmond, San Rafael Eastern end of I-580 overlap; former SR 17 north; eastbound exit and westbound entrance
Pierce StreetFormer eastbound exit and entrance; demolished as part of reconstruction of I-80 / I-580 interchange in Albany
Contra Costa Richmond 13.5721.8414ACentral Avenue El Cerrito El Cerrito not signed westbound
14.3523.0914BCarlson Boulevard
El Cerrito 15.0224.1715Potrero AvenueEastbound exit and westbound entrance
Richmond Cutting Boulevard (SR 123)Westbound exit and eastbound entrance
Cutting BoulevardHOV access only; westbound left exit and eastbound entrance
15.9725.7016AMacdonald AvenueEastbound exit and westbound entrance
16.3126.2516B San Pablo Avenue, Barrett AvenueSigned as exit 16 westbound; Barrett Avenue formerly signed as Central Richmond
16.7626.9717Solano AvenueEastbound exit and westbound entrance
McBryde AvenueWestbound exit only
San Pablo 17.6928.4718 San Pablo Dam Road
Richmond 18.6029.9319AEl Portal Drive
19.3331.1119B Hilltop Mall, Auto PlazaFormerly signed as Hilltop Drive
RichmondPinole line Richmond Parkway HOV access only; eastbound left exit and westbound entrance
Pinole 19.9532.1120To plate blue.svg
I-580 (1961).svg
Richmond Parkway, Fitzgerald Drive to I-580 west
Unconstructed SR 93
20.9533.7221Appian Way
21.8635.1822Pinole Valley Road
Hercules 23.4137.6723California 4.svg SR 4 east Hercules, Stockton Eastbound signage; no westbound access to SR 4 east; SR 4 exit 1B
Hercules Westbound signage
24.0438.6924Willow Avenue Rodeo
26.1042.0026To plate green.svg
California 4.svg
Cummings Skyway to SR 4 east Martinez, Concord
26.8443.1927Pomona Street Crockett, Port Costa
Carquinez Strait 27.4944.24 Carquinez Bridge (eastbound toll only)
Solano Vallejo 28.63–
29ACalifornia 29.svg SR 29 (Sonoma Boulevard)Eastbound exit and westbound entrance
Maritime Academy DriveWestbound exit and entrance
29BSequoia AvenueEastbound exit only
29.2747.1129CMagazine StreetSigned as exit 29B westbound
29.7147.8130AI-780 (1961).svgTo plate blue.svg
I-680 (1961).svg
I-780 to I-680  / Curtola Parkway  Benicia, Martinez
Former I-680 south; I-780 exits 1A-B
29.9348.1730BFrontage Road (to Benicia Road)Eastbound exit only; former SR 141
30.3748.8830CGeorgia Street Central Vallejo Signed as exit 30B westbound
30.7249.4431ASprings Road / Solano Avenue
30.9849.8631BTennessee Street Mare Island
31.9251.3732Redwood Parkway / Redwood StreetSigned as exits 32A (east) and 32B (west) eastbound
33.1253.3033California 37.svg SR 37 west / Columbus Parkway Napa, Novato, San Rafael, Auto Mall Signed as exits 33A (Columbus Parkway) and 33B (SR 37) westbound; SR 37 exit 21A to I-80 west
34.1254.91Hunter Hill Rest Area (westbound only)
county line
35.5957.2836American Canyon Road
Solano Fairfield 38.8862.5739ARed Top RoadSigned as exit 39 eastbound
39BCalifornia 12.svg SR 12 west Napa, Sonoma Western end of SR 12 overlap; eastbound access is via exit 39
40Green Valley RoadWestbound access is part of exit 41
I-680 (1961).svg I-680 south Benicia, Martinez, San Jose Former SR 21; I-680 north exits 71A-B
41Suisun Valley Road / Pittman Road
43.3269.7243California 12.svg SR 12 east Suisun City, Rio Vista Eastern end of SR 12 overlap; westbound exit is via exit 43
43.6470.2344AAbernathy Road / Suisun ParkwaySigned as exit 43 westbound
44.2271.1744BWest Texas Street, Rockville RoadSigned as exit 44 westbound
45.4273.1045Travis Boulevard
46.6875.1247Waterman Boulevard, Air Base Parkway Travis AFB Signed as exits 47A (Air Base Parkway) and 47B (Waterman Boulevard) westbound
48.3077.7348North Texas Street, Manuel Campos Parkway
Vacaville 50.6281.4651ALagoon Valley Road, Cherry Glen Road
51.1682.3351BPeña Adobe Road
52Cherry Glen RoadWestbound exit only
52.8184.9953Alamo Drive, Merchant Street
53.5186.1254ADavis Street
53.9786.8654BPeabody Road, Mason Street Elmira
54.7488.1055Monte Vista Avenue, Allison Drive, Nut Tree Parkway
55.8689.9056I-505 (1961).svg I-505 north Winters, Redding I-505 exits 1A-B
57.2992.2057Leisure Town Road, Vaca Valley Parkway
58.8094.6359Meridian Road, Weber Road
60.1296.7560Midway Road, Lewis Road
Dixon 64.04103.0663Dixon Avenue, West A Street
64.38103.6164Pitt School Road
65.70105.7366ACalifornia 113.svg SR 113 south (First Street) / Currey Road Dixon Western end of SR 113 overlap; signed as exit 66 eastbound
66BMilk Farm RoadWestbound exit only
67.22108.1867Pedrick Road (CR E7)
68.74110.6369Kidwell Road
70.16112.9170California 113.svg SR 113 north (Vic Fazio Highway) Woodland Eastern end of SR 113 overlap; SR 113 exits 26A-B
70.50113.4671 UC Davis (Old Davis Road)
Yolo Davis 72.44116.5872Richards Boulevard Downtown Davis Signed as exits 72A (south) and 72B (north) westbound
73.05117.5673Olive DriveWestbound exit only; former US 40 west / US 99W north
74.89120.5275Mace Boulevard (CR E6)
78.00125.5378Road 32A / East Chiles Road
Yolo Bypass 78.02–
Yolo Causeway
West Sacramento 81.39130.9881West Capitol Avenue, Enterprise BoulevardWest Capitol Avenue was former US 40 east / US 99W south
82.12132.1682US 50 (1961 cutout).svg US 50 east (I-305 east) Sacramento, South Lake Tahoe Eastbound exit and westbound entrance are on the left; former I-80 / US 40 east / US 99W south; US 50 exit 1A–B
83.46134.3283Reed Avenue (SR 84)
Sacramento Sacramento 85.29137.2685West El Camino Avenue
86.48139.1886I-5 (1961).svgTo plate green.svg
California 99.svg
I-5 to SR 99  Los Angeles, Redding
I-5 exit 522
87.58140.9588Truxel Road
88.91143.0989Northgate Boulevard
90.05144.9290Norwood Avenue
91.56147.3591Raley Boulevard, Marysville Boulevard Del Paso Heights
92.60149.0392Winters Street
93.33150.2093Longview Drive
94 Light Rail Stations (Roseville Road, Watt/I-80 West, and Watt/I-80)Westbound left exit and eastbound left entrance; also accessible as part of exit 93 westbound
94AWatt AvenueWestbound access via exit 95
94B Auburn Boulevard (SR 244)
94.94152.7995Business Loop 80 (CA).svgTo plate green.svg
California 99.svg
I-80 BL 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
96.41155.1696Madison Avenue
98.38158.3398 Greenback Lane, Elkhorn Boulevard (CR E14)
Citrus Heights 100.62161.93100Antelope Road
Placer Roseville 102.20164.47102Riverside Avenue, Auburn Boulevard  Roseville, Citrus Heights Former US 40 / SR 65
103.91167.23103Douglas Boulevard, Sunrise Avenue (CR E2)Signed as exits 103A (east) and 103B (west) eastbound
105.00168.98105AAtlantic Street, Eureka RoadSigned as exits 105A (Eureka Road) and 105B (Atlantic Street) westbound
105.59169.93105BTaylor Road, Pacific StreetWestbound exit is via exit 105A
RosevilleRocklin line106.09170.74106California 65.svg SR 65 north Lincoln, Marysville SR 65 exits 306A-B
Rocklin 107.99173.79108Rocklin Road
109.35175.98109Sierra College Boulevard (CR E3)
Loomis 110.65178.07110Horseshoe Bar Road
112.28180.70112Penryn Road Penryn
115.74186.27115Newcastle Road Newcastle
116.23187.05116California 193.svg SR 193 west Lincoln Western end of SR 193 overlap
Auburn 118.84191.25118Ophir RoadWestbound exit and eastbound entrance
119.22191.87119AMaple Street, Nevada Street
119.47192.27119BCalifornia 49.svg SR 49 north (Grass Valley Highway) Grass Valley Western end of SR 49 overlap
119.76192.74119CCalifornia 49.svg SR 49 south (SR 193 east, Elm Avenue) Placerville Eastern end of SR 49 / SR 193 overlap
120.87194.52120Lincoln Way, Russell RoadNo eastbound entrance
121.40195.37121Auburn Ravine Road Foresthill
122.06196.44122 Bowman
123.06198.05123Bell Road
124.14199.78124Dry Creek Road
125.36201.75125 Clipper Gap, Meadow Vista (Placer Hills Road)
128.14206.22128 Applegate
129.32208.12129 Heather Glen
130.52210.05130West Paoli Lane
131.25211.23131Weimar Cross Road
Colfax 133.72215.20133Canyon Way, Placer Hills Road
135.06217.36135California 174.svg SR 174  Colfax, Grass Valley
140.28225.76139Rollins Lake Road, Magra RoadWestbound exit and entrance
140Secret Town Road, Magra Road
143.30230.62143Magra Road Gold Run
143.68231.23Gold Run Rest Area
144.13231.95144 Gold Run Westbound exit and eastbound entrance
145.10233.52145 Dutch Flat
146.68236.06146 Alta
148.24238.57148A Crystal Springs
148.87239.58148B Baxter
150.93242.90150Drum Forebay Road
155.29249.92155 Blue Canyon
156.74252.25156Nyack Road
157.99254.26158A Emigrant Gap Signed as exit 158 westbound
158.79255.55158BLaing RoadEastbound exit only
Nevada 160.77258.73160 Yuba Gap
161.47259.86161California 20.svg SR 20 west Nevada City, Grass Valley
163.96263.87164Eagle Lakes Road
Placer 165.45266.27165 Cisco Grove (Cisco Road)
166.73268.33166 Big Bend Eastbound exit only
168.13270.58168Rainbow Road Big Bend
171.16275.46171 Kingvale
Nevada 174.18280.32174 Soda Springs, Norden
176.77284.48176Boreal Ridge Road Castle Peak
177.22285.21 Donner Summit Rest Area
Truckee 180.09289.83180 Donner Lake (Donner Lake Road)
184.91297.58184 Donner Pass Road
185.86299.11185California 89.svg SR 89 south Tahoe City, Lake Tahoe, Squaw Valley Western end of SR 89 overlap
186.67300.42186 Central Truckee No eastbound entrance
187.99302.54188A Truckee Eastbound exit and westbound entrance
188.30303.04188BCalifornia 89.svgCalifornia 267.svg SR 89 north / SR 267 south Sierraville, Lake Tahoe Eastern end of SR 89 overlap; signed as exit 188 westbound
189.98305.74190Overland Trail
190.96307.32Agricultural Inspection Station (westbound only)
194.11312.39194Hirschdale Road
198.99320.24199 Floriston
201.19323.78201 Farad
Sierra 205.07330.03I-80.svg I-80 east Reno Continuation into Nevada
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

There are eight associated routes of I-80: seven auxiliary Interstate Highways and one business route; these routes are I-280, I-380, I-580, I-680, I-780, I-880, I-980, and I-80 Bus.. Three former routes exist: I-180, I-480, and I-880.

See also

Related Research Articles

Interstate 238 (I-238) is an auxiliary Interstate Highway in the San Francisco Bay Area in the U.S. state of California. It comprises the northernmost 2.126 miles (3.421 km) of Route 238, as defined by the California Streets and Highways Code. Originally signed as State Route 238 (SR 238) until 1983, it connects I-580 in Castro Valley with I-880 in San Leandro.

Interstate 880 (I-880) is a north–south auxiliary Interstate Highway in the San Francisco Bay Area of Northern California. It runs from I-280 and State Route 17 (SR 17) in San Jose to I-80 and I-580 in Oakland, running parallel to the eastern shore of San Francisco Bay. For most of its route, I-880 is officially known as the Nimitz Freeway, after World War II fleet admiral Chester Nimitz, who retired to the Bay Area. The northernmost five miles is also commonly referred to as the Cypress Freeway, after the former alignment of the freeway, and its subsequent replacement.

Interstate 580 (I-580) is an approximately 82-mile-long (132 km) east–west auxiliary Interstate Highway in Northern California. The heavily traveled spur route of I-80 runs from US 101 in San Rafael in the San Francisco Bay Area to I-5 near Tracy in the Central Valley. I-580 forms a concurrency with I-80 between Albany and Oakland, the latter of which is the location of the MacArthur Maze interchange immediately east of the San Francisco–Oakland Bay Bridge. I-580 provides a connection from the Bay Area to the southern San Joaquin Valley and Southern California via I-5, as I-5 bypasses the Bay Area to the east.

Interstate 980 (I-980) is a short 2.0-mile (3.2 km) auxiliary Interstate Highway spur entirely within the City of Oakland in Northern California, connecting Interstate 580 and State Route 24 to Interstate 880 near Downtown Oakland. I-980 passes the Oakland Convention Center and near the famous Jack London Square. I-980 is commonly considered the dividing line between Downtown Oakland and West Oakland. The freeway was planned as the eastern approach to the San Francisco Bay Southern Crossing. It is officially known as the John B. Williams Freeway, after the former director of the City of Oakland's Office of Community Development.

Interstate 680 (I-680) is a north–south auxiliary Interstate Highway in Northern California. It curves around the eastern cities of the San Francisco Bay Area from San Jose to Interstate 80 at Fairfield, bypassing cities along the eastern shore of San Francisco Bay such as Oakland and Richmond while serving others more inland such as Pleasanton and Concord.

Interstate 280 (I-280) is a 57.5-mile-long (92.5 km) major north–south auxiliary Interstate Highway in the San Francisco Bay Area of Northern California. It runs from I-680 and US 101 in San Jose to King and Fifth Streets in San Francisco, running just to the west of the larger cities of San Francisco Peninsula for most of its route.

California State Route 13 State highway in Alameda County, California, United States

State Route 13 is a state highway in the U.S. state of California. It runs entirely in Alameda County, connecting Interstate 580 in Oakland to Interstate 80/Interstate 580 in Berkeley.

California State Route 92 Highway in California

State Route 92 is a state highway in the U.S. state of California, serving as a major east-west corridor in the San Francisco Bay Area. From its west end at State Route 1 in Half Moon Bay near the coast, it heads east across the San Francisco Peninsula and the San Mateo–Hayward Bridge to downtown Hayward in the East Bay at its junction with State Route 238 and State Route 185. It has interchanges with three freeways: Interstate 280, U.S. Route 101 in or near San Mateo, and Interstate 880 in Hayward. It also connects indirectly to Interstates 238 and 580 by way of Hayward's Foothill Boulevard, which carries Route 238 and flows directly into Route 92.

California State Route 24 Highway in California

State Route 24 is a heavily traveled east–west state highway in the U.S. state of California that serves the eastern side of the San Francisco Bay Area. A freeway throughout its entire length, it runs from the Interstate 580/Interstate 980 interchange in Oakland, and through the Caldecott Tunnel under the Berkeley Hills, to the Interstate 680 junction in Walnut Creek. It lies in Alameda County, where it is highly urban, and Contra Costa County, where it passes through wooded hillsides and suburbs. SR 24 is a major connection between the San Francisco–Oakland Bay Bridge/MacArthur Maze complex and the inland cities of the East Bay.

California State Route 82 Highway in California

State Route 82 is a state highway in the U.S. state of California that runs from Interstate 880 (I-880) in San Jose to I-280 in San Francisco following the San Francisco Peninsula. It is the spinal arterial road of the peninsula and runs parallel to the nearby Caltrain line along much of the route. For much of its length, the highway is named El Camino Real and formed part of the historic El Camino Real mission trail. It passes through and near the historic downtowns of many Peninsula cities, including Burlingame, San Mateo, Redwood City, Menlo Park, Palo Alto, Mountain View, and Sunnyvale, and through some of the most walkable and transit-oriented neighborhoods in the region.

California State Route 123 Highway in California

State Route 123 is a state highway in the U.S. state of California in the San Francisco Bay Area. Named San Pablo Avenue for virtually its entire length, SR 123 is a major north–south state highway along the flats of the urban East Bay. Route 123 runs about 7.39 miles (11.9 km) between Interstate 580 in Oakland in the south and Interstate 80 in Richmond in the north. San Pablo Avenue itself, a portion of Historic US 40, continues well past these termini, south to Downtown Oakland and north to Crockett, but without the Route 123 designation.

The State Scenic Highway System in the U.S. state of California is a list of highways, mainly state highways, that have been designated by the California Department of Transportation (Caltrans) as scenic highways. They are marked by the state flower, a California poppy, inside either a rectangle for state-maintained highways or a pentagon for county highways.

California State Route 61 Highway in California

State Route 61 is a state highway in the U.S. state of California, running along the eastern edge of Oakland International Airport and through Alameda. Two additional "hidden" state highways, State Route 112 and State Route 260, are also signed as part of SR 61, despite having legal descriptions separate from Route 61.

MacArthur Maze

The MacArthur Maze is a large freeway interchange near the east end of the San Francisco–Oakland Bay Bridge in Oakland, California. It splits Bay Bridge traffic into three freeways—the Eastshore (I-80/I-580), MacArthur (I-580) and Nimitz (I-880).

California State Route 17 State highway in Santa Cruz and Santa Clara counties in California, United States

State Route 17 is a state highway in the U.S. state of California that runs from State Route 1 in Santa Cruz to I-280 and I-880 in San Jose. SR 17, a freeway and expressway, carries substantial commuter and vacation traffic through the Santa Cruz Mountains at Patchen Pass between Santa Cruz and the San Francisco Bay Area.

Interstate 80 Business, called the Capital City Freeway in its entirety and also known as Business 80, is a business loop of Interstate 80 (I-80) through Sacramento, California, United States. The route is also colloquially referred to as "Cap City Freeway" and "Biz 80". The entire route is a freeway.

U.S. Route 50 (US 50) is a transcontinental United States Numbered Highway, stretching from West Sacramento, California, in the west to Ocean City, Maryland, in the east. The California portion of US 50 runs east from Interstate 80 (I-80) in West Sacramento to the Nevada state line in South Lake Tahoe. A portion in Sacramento also has the unsigned designation of Interstate 305. The western half of the highway in California is a four-or-more-lane divided highway, mostly built to freeway standards, and known as the El Dorado Freeway outside of downtown Sacramento. US 50 continues as an undivided highway with one eastbound lane and two westbound lanes until the route reaches the canyon of the South Fork American River at Riverton. The remainder of the highway, which climbs along and out of the canyon, then over the Sierra Nevada at Echo Summit and into the Lake Tahoe Basin, is primarily a two-lane road.

Transportation in California Overview of the transport in the State of California

California's transportation system is complex and dynamic. Although known for its car culture and extensive network of freeways and roads, the state also has a vast array of rail, sea, and air transport. Several subway, light rail, and commuter rail networks are found in many of the state's largest population centers. In addition, with the state's location on the West Coast of the United States, several important ports in California handle freight shipments from the Pacific Rim and beyond. A number of airports are also spread out across the state, ranging from small general aviation airports to large international hubs like Los Angeles International Airport and San Francisco International Airport.

Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, stretching from the Mexican border at the San Ysidro crossing to the Canadian border near Blaine, Washington. From San Ysidro, the segment of I-5 in California runs north across the length of the state, and crosses into Oregon south of the Medford-Ashland metropolitan area. It is the more important and most-used of the two major north–south routes on the Pacific Coast, the other being U.S. Route 101 (US 101), which is primarily coastal. I-5 is known colloquially as "the 5" to Southern California residents and "5" to Northern California residents due to varieties in California English. The highway connects to the Mexican Federal Highway 1 (Fed. 1) in the south.


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