Interstate 80 in California

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Interstate 80

Dwight D. Eisenhower Highway
I-80 highlighted in red
Route information
Maintained by Caltrans
Length205.07 mi[1][2] (330.03 km)
199.24 miles (320.65 km) per FHWA[1]
ExistedJuly 1, 1964[3]–present
National Forest Scenic Byway.svg Yuba-Donner Scenic Byway
NHSEntire route
RestrictionsNo flammable tank vehicles or explosives on the Bay Bridge[4]
Major junctions
West end US 101 in San Francisco
Major intersections
East end I-80 at Nevada state line near Verdi, NV
CountryUnited States
CountiesSan Francisco, Alameda, Contra Costa, Solano, Napa, Yolo, Sacramento, Placer, Nevada, Sierra
Highway system
SR 79 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 San Francisco–Oakland 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 mph (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 US 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 rerouted around the city after plans to upgrade the original grandfathered route through the city to Interstate Highway standards were canceled.

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[5] and is part of the National Highway System,[6] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration (FHWA).[7] I-80 is also known as the Dutch Flat and Donner Lake Wagon Road from Emigrant Gap to Donner Lake.[8] The segment of I-80 from Emigrant Gap to Truckee also forms part of the Yuba–Donner Scenic Byway, a National Forest Scenic Byway.[9]

San Francisco Bay Area

The western terminus of I-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 US 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 offramp (previously known as the Terminal Separator Structure that once connected it to the Embarcadero Freeway).[10][11] The federal and state governments disagree as to whether this westernmost segment of the signed Interstate, known as the San Francisco Skyway or Bayshore Viaduct, is actually part of the Interstate Highway System,[10][11] although it is consistently shown as I-80 on most maps of San Francisco.[11]

Eastshore Freeway

The Eastshore Freeway is a segment of I-80 and I-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. I-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 I-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 toward Pacific Park Plaza in Emeryville

The Eastshore Freeway was created in the mid-1950s[12] (construction commenced in 1954, last segment completed May 10, 1960[13]) by reengineering the Eastshore Highway, a thoroughfare constructed in the 1930s (1934–1937) as one of the approaches to the Bay Bridge and designated as part of US 40.[14] The Eastshore Highway began in El Cerrito at an intersection with San Pablo Avenue at Hill Street between Potrero Avenue and Cutting Boulevard,[15] adjacent to the location today of the El Cerrito del Norte station of Bay Area Rapid Transit (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 San Francisco–Oakland 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 (WPA) 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 Chester W. 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.[16][17] Until the late 1960s, the Eastshore Freeway was also designated as part of State Route 17 (SR 17) together with the Nimitz Freeway.[18]

Central Valley

Bats flying from under the Yolo Causeway in Yolo County

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.[19] I-80 is a six- to eight-lane freeway with carpool lanes in Fairfield between exit 39A (Red Top Road) and exit 47 (Air Base Parkway).[20]

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 US 50 and I-80 Business (I-80 Bus), 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 US 50 in West Sacramento across I-5 to its junction northeast of Sacramento with I-80 Bus (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. The California Department of Transportation (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.[21][22]

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.[23][24] 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 (3.2 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 three to six percent for 30 miles (48 km).[25]


Historic routing

A sign in California recognizing an old alignment of US 40

U.S. Route 40

LocationSan Francisco–Nevada state line

In California I-80 was built along the line of, and eventually replaced, US 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 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 US 40. After the San Francisco–Oakland Bay Bridge's construction, US 40, along with US 50, were extended along the bridge to connect with US 101.[26] The auto ferry service was then discontinued.

US 40 and US 50 both followed the San Francisco–Oakland Bay Bridge and the routes split on what is the present day MacArthur Maze in Oakland. 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, 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 I-80 Bus, 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.[27] It begins near Soda Springs and ends at Truckee. 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 San Francisco 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.[28] In 1964, community oppositions forced Caltrans to abandon the Panhandle Freeway project. A January 1968 amendment moved I-280 to its present alignment, degraded I-480 to a state highway, and truncated the origin point of I-80 to the Embarcadero Freeway (then I-280, formerly I-480).[29] 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.[30] 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 SR 241. The Panhandle Freeway was later canceled in the wake of freeway revolts, and the SR 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.[31] 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 0.5 miles (0.80 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 California Transportation Commission (CTC).[30]


Prior to the construction of I-80, the US 40 corridor suffered from frequent car accidents. Reasons included the many traffic signals, yield signs, 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 percent and there were 245 fewer accidents on the then-new I-80 freeway.[32]

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.[33] This route was often closed in the winter because of the high elevation of the Donner Pass (7,239 feet (2,206 m)), and drivers had to use a much longer route to the north, US 40 Alternate (US 40 Alt), now SR 70, using the Beckwourth Pass, at an elevation of 5,221 feet (1,591 m).[34] 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.

Truncation of US 40

In 1964, Caltrans desired to reduce the number of designated routes in the California state highways system.[35] The Interstate Highway System, designed and built starting in 1956, was adding on to the already increased number of US Routes and state highways.[36] 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.[36] Also, the number "40" was duplicated along I-40, at that time, a newly built route in Southern California. I-40 was to be numbered I-30, but the American Association of State Highway and Transportation Officials (AASHTO) rejected the numbering.[37]

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.[35] US 40 was one of the first US Routes to be decommissioned completely in California.[38]

Former alignments in Sacramento

Interstate 880

LocationWest SacramentoSacramento
NHSEntire route

In the Sacramento area, I-80 has been realigned to many routes.[30] In 1964, I-80 used the old US 40/US 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.[30]

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.[39] From 1972 to 1980, I-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 rerouted along the Beltline Freeway in 1983, while the Capital City Freeway became I-80 Bus, 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 I-80/SR 51/SR 244 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 (1.6 km) long. In 1982–1984, 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

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 seven inches (18 cm) to the east and caused the bolts of one section to shear off, sending the 250-short-ton (230 t; 220-long-ton) section of roadbed crashing down like a trapdoor.[40] Caltrans removed and replaced the collapsed section and reopened the bridge on November 18.[41]

New eastern span of San Francisco–Oakland 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 San Francisco–Oakland Bay Bridge used a new earthquake-resisting technique that would not collapse in an earthquake similar to the Loma Prieta earthquake.[42] The new eastern span opened on September 2, 2013, at an estimated cost of $6.4 billion (equivalent to $8.26 billion in 2023[43]).

Express lanes

In May 2022, Caltrans began construction on 18-mile (29 km) high-occupancy toll (HOT) lanes along I-80 between Red Top Road in Fairfield and Leisure Town Road in Vacaville. The project includes converting the existing 8-mile (13 km) carpool lanes between Red Top Road and Air Base Parkway.[20][44] Scheduled to open in 2025, the HOT lanes will use an open road tolling system, and therefore no toll booths to receive cash, with each vehicle required to carry a FasTrak transponder.[44]

Exit list

City and County of San Francisco0.00–
1 US 101 – San Jose, Golden Gate BridgeSigned 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 CenterWestbound exit and eastbound entrance
2AFifth StreetWestbound exit and eastbound entrance
2Fourth StreetEastbound exit and westbound entrance
2BHarrison Street / EmbarcaderoWestbound exit and eastbound entrance; former Fremont Street exit
2CFremont Street / Folsom StreetWestbound exit and eastbound entrance; former Main Street / SR 480 exit
San Francisco Bay3.756.04San Francisco–Oakland Bay Bridge (west span)
City and County of San Francisco4.186.734ATreasure IslandEastbound left exit and westbound entrance; connects to Treasure Island Road; scheduled to close in late May 2023 for a few of years during a seismic retrofit of the Bay Bridge western span[45]
Yerba Buena Tunnel
4BYerba Buena Island / Treasure IslandSigned as exit 4 westbound; original eastbound off-ramp was demolished as part of the Bay Bridge eastern span replacement but its replacement ramp was not completed until May 2023;[45][46] connects to Macalla Road/Hillcrest Road
San Francisco Bay5.318.55San Francisco–Oakland Bay Bridge (east span; westbound toll only)
I-880 south (Nimitz Freeway) – Alameda, San Jose
Eastbound exit and westbound entrance; western end of MacArthur Maze; 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

I-580 east (MacArthur Freeway) to SR 24 – Downtown Oakland, Hayward, Stockton
Eastbound signage; I-580 west exit 19A

I-580 east (MacArthur Freeway) / I-880 south (Nimitz Freeway) – Downtown Oakland, Hayward, Stockton, Alameda, San Jose
Western end of I-580 overlap; westbound left exit and eastbound entrance; eastern end of MacArthur Maze; I-880 exit 46B; I-880 was former SR 17 south; access to Oakland International Airport
Emeryville9.1014.659Powell Street – EmeryvilleNo eastbound exit from I-880 north
EmeryvilleBerkeley line9.8915.9210 SR 13 (Ashby Avenue) / Shellmound StreetShellmound Street accessible eastbound only
Berkeley11.1317.9111University Avenue – BerkeleyServes UC Berkeley
11.9119.1712Gilman Street
Albany12.6120.2913ABuchanan Street – AlbanyEastbound signage; partially rebuilt as part of 1990s reconstruction of the Hoffman Split interchange
I-580 west – Point Richmond, San Rafael
Eastern end of I-580 overlap; Hoffman Split interchange; eastbound exit and westbound entrance; former SR 17 north
13AlbanyWestbound signage; connects to Cleveland Avenue
Pierce StreetFormer eastbound exit and entrance; demolished during the 1990s reconstruction of the Hoffman Split interchange
Contra CostaRichmond13.5721.8414ACentral Avenue – El CerritoEl Cerrito not signed westbound
14.3523.0914BCarlson Boulevard
RichmondEl Cerrito line15.0224.1715Potrero AvenueEastbound exit and westbound entrance
RichmondCutting 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
16.3126.2516BSan 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 Pablo17.6928.4718San Pablo Dam Road
Richmond18.6029.9319AEl Portal Drive
19.3331.1119BHilltop Mall, Auto PlazaFormerly signed as Hilltop Drive
RichmondPinole lineRichmond ParkwayHOV access only; eastbound left exit and westbound entrance

Richmond Parkway, Fitzgerald Drive to I-580 west
Unconstructed SR 93
20.9533.7221Appian Way
21.8635.1822Pinole Valley Road
SR 4 east – Hercules, Stockton
Eastbound signage; no westbound access to SR 4 east; SR 4 exit 1B
HerculesWestbound signage
24.0438.6924Willow Avenue – Rodeo

Cummings Skyway to SR 4 east – Martinez, Concord
26.8443.1927Pomona Street – Crockett, Port Costa
Carquinez Strait27.4944.24Carquinez Bridge (eastbound toll only)
29A 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
I-780 to I-680 / Curtola Parkway – Benicia, Martinez
Former I-680 south; I-780 exit 1
29.9348.1730BFrontage Road (to Benicia Road)Eastbound exit only; former SR 141
30.3748.8830CGeorgia Street – Central VallejoSigned 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
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
SolanoFairfield38.8862.5739ARed Top RoadSigned as exit 39 eastbound
I-80 Express LanesWest end of express lanes-under construction; scheduled to open in 2025[44]
SR 12 west – Napa, Sonoma
Western end of SR 12 overlap; eastbound access is via exit 40
40Green Valley RoadWestbound access is part of exit 41

I-680 south – Benicia, Martinez, San Jose
Former SR 21; I-680 north exits 71A-B
41Suisun Valley Road, Pittman Road
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 AFBSigned as exits 47A (Air Base Parkway) and 47B (Waterman Boulevard) westbound
48.3077.7348North Texas Street, Manuel Campos Parkway
Vacaville50.6281.4651ALagoon 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
I-505 north – Winters, Redding
I-505 exits 1A-B
I-80 Express LanesEast end of express lanes-under construction; scheduled to open in 2025[44]
57.2992.2057Leisure Town Road, Vaca Valley Parkway
58.8094.6359Meridian Road, Weber Road
60.1296.7560Midway Road, Lewis Road
Dixon64.04103.0663Dixon Avenue, West A Street
64.38103.6164Pitt School Road
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
SR 113 north (Vic Fazio Highway) – Woodland
Eastern end of SR 113 overlap; SR 113 exits 26A-B
70.50113.4671UC DavisConnects to Old Davis Road
YoloDavis72.44116.5872Richards Boulevard – Downtown DavisSigned 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 Bypass78.02–
Yolo Causeway
West Sacramento81.39130.9881West Capitol Avenue, Enterprise BoulevardWest Capitol Avenue was former US 40 east / US 99W south
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 1
83.46134.3283Reed Avenue (SR 84)
SacramentoSacramento85.29137.2685West El Camino Avenue
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
North Highlands94.29–
94Light 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; due to the nature of the left hand ramps, all vehicles are allowed access to the HOV lanes for 0.5 miles (0.80 km) to and from the ramps
94AWatt AvenueWestbound access via exit 95
94BAuburn Boulevard (SR 244)

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
Foothill FarmsCarmichael line98.38158.3398Greenback Lane, Elkhorn Boulevard (CR E14)
Citrus Heights100.62161.93100Antelope Road
county line
Citrus HeightsRoseville line102.20164.47102Riverside Avenue, Auburn Boulevard – Roseville, Citrus HeightsFormer US 40 / US 99E / SR 65
PlacerRoseville103.91167.23103Douglas 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 line106.09170.74106
SR 65 north – Lincoln, Marysville
SR 65 exits 306A-B
Rocklin107.99173.79108Rocklin Road
109.35175.98109Sierra College Boulevard (CR E3)
Loomis110.65178.07110Horseshoe Bar Road
Penryn112.28180.70112Penryn Road – Penryn
Newcastle115.74186.27115Newcastle Road – Newcastle
SR 193 west – Lincoln
Western end of SR 193 overlap
Auburn118.84191.25118Ophir RoadWestbound exit and eastbound entrance
119.22191.87119AMaple Street, Nevada Street
SR 49 north (Grass Valley Highway) – Grass Valley
Western end of SR 49 overlap
SR 49 south (SR 193 east, Elm Avenue) – Placerville
Eastern end of SR 49 / SR 193 overlap
AuburnNorth Auburn line120.87194.52120Lincoln Way, Russell RoadNo eastbound entrance
North Auburn121.40195.37121Auburn Ravine Road – Foresthill
122.06196.44122BowmanConnects to Bowman Road
123.06198.05123Bell Road
124.14199.78124Dry Creek Road
125.36201.75125Clipper Gap, Meadow VistaConnects to Placer Hills Road
128.14206.22128ApplegateConnects to Crother Road
129.32208.12129Heather GlenConnects to Applegate Road and Geisendorfer Road
130.52210.05130West Paoli Lane
131.25211.23131Weimar Cross Road
Colfax133.72215.20133Canyon Way, Placer Hills Road
135.06217.36135 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
144.13231.95144Gold RunWestbound exit and eastbound entrance; connects to Gold Run Road and Hi Sierra Drive
145.10233.52145Dutch FlatConnects to Canyon Creek Road and Ridge Road
146.68236.06146AltaConnects to Alta Bonnynook Road and Morton Road
Alta148.24238.57148ACrystal SpringsConnects to Crystal Springs Road
148.87239.58148BBaxterConnects to Baxter Road
150.93242.90150Drum Forebay Road
155.29249.92155Blue CanyonConnects to Blue Canyon Road
156.74252.25156Nyack Road
157.99254.26158AEmigrant GapSigned as exit 158 westbound; connects to Emigrant Gap Road
158.79255.55158BLaing RoadEastbound exit only
Nevada160.77258.73160Yuba GapConnects to Lake Valley Road
SR 20 west – Nevada City, Grass Valley
163.96263.87164Eagle Lakes Road
Placer165.45266.27165Cisco GroveConnects to Cisco Road
166.73268.33166Big BendEastbound exit only; connects to Hampshire Rocks Road
168.13270.58168Rainbow Road – Big Bend
Kingvale171.16275.46171KingvaleConnects to Donner Pass Road
NevadaSoda Springs173.84279.77174Soda Springs, NordenConnects to Donner Pass Road; former US 40
176.23283.61176Boreal Ridge Road – Castle Peak
176.66284.31Donner Summit Rest Area
Donner Summit,
elevation 7,227 feet (2,203 m) eastbound, 7,239 feet (2,206 m) westbound[47]
Truckee180.16289.94180Donner LakeConnects to Donner Lake Road
184.91297.58184Donner Pass RoadFormer US 40
SR 89 south – Tahoe City, Lake Tahoe, Squaw Valley
Western end of SR 89 overlap
186.67300.42186Central TruckeeNo eastbound entrance; connects to Donner Pass Road; former US 40
187.99302.54188ATruckeeEastbound exit and westbound entrance; connects to Truckee Way

SR 89 north / SR 267 south – Sierraville, Lake Tahoe
Eastern end of SR 89 overlap; signed as exit 188 westbound
189.98305.74190Overland TrailFormerly Prosser Village Road
190.96307.32Agricultural Inspection Station (westbound only)
194.11312.39194Hirschdale Road
Floriston198.99320.24199FloristonConnects to Floriston Way
201.19323.78201FaradConnects to Mystic Road
I-80 east – Reno
Continuation into Nevada
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Related routes

The following auxiliary Interstate Highways are associated with I-80 in California, all in the San Francisco Bay Area:

In addition, I-238 may be considered associated with I-80 even though it does not follow established rules for numbering Interstates as there is no I-38. As it connects I-580 in Castro Valley with I-880 in San Leandro, it would normally also use a three-digit number ending in 80. But, of the nine possible numbers, two (180 and 480) were in use by State Routes (the latter an Interstate until 1968 though SR 480 was deleted in 1991), and the remainder were already in use by the other aforementioned auxiliary routes. (I-880 was designated at the same time as I-238.)

One business loop of I-80 exists in California, running along a former alignment through Sacramento.

Three former auxiliary Interstate Highway routes exist:

  • I-180 was the designation for the segment along the Richmond–San Rafael Bridge between 1978 and 1983 before it became a northern extension on I-580.
  • I-480 was planned to run in San Francisco between I-80 near the San Francisco–Oakland Bay Bridge and US 101 near the Golden Gate Bridge. Only the elevated double-decker Embarcadero Freeway and the partly elevated Doyle Drive approach to the Golden Gate Bridge were completed before freeway revolts halted any construction of the middle section. The Interstate designation only lasted from 1955 to 1965, and the Embarcadero Freeway was demolished after the 1989 Loma Prieta earthquake.
  • I-880 was the original route designation of the northern bypass freeway in Sacramento before I-80 was rerouted along it in 1983.


  1. ^ a b "Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. December 31, 2021. Retrieved June 9, 2022.
  2. ^ a b c Warring, KS (April 18, 2008). "Interstate 80 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Archived (PDF) from the original on April 23, 2014. Retrieved April 28, 2014.
  3. ^ Faigin, Daniel P. "Routes 73 through 80: Interstate 80". California Highways. Retrieved January 26, 2013.
  4. ^ "Truck Networks on California State Highways: District 4" (PDF). California Department of Transportation. May 1, 2015. Retrieved May 3, 2016.
  5. ^ "Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
  6. ^ Federal Highway Administration (March 25, 2015). National Highway System: California (North) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 12, 2017.
  7. ^ Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
  8. ^ California Department of Transportation; California State Transportation Agency (January 2021). 2020 Named Freeways, Highways, Structures and Other Appurtenances in California (PDF). Sacramento: California Department of Transportation. pp. 49, 258. Archived from the original (PDF) on October 10, 2022.
  9. ^ Federal Highway Administration (n.d.). "Yuba-Donner Scenic Byway". America's Byways. Federal Highway Administration. Archived from the original on October 23, 2011. Retrieved October 23, 2011.
  10. ^ a b Federal Highway Administration (March 25, 2015). National Highway System: San Francisco–Oakland, CA (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 12, 2017.
  11. ^ a b c California Department of Transportation. "California Road System (CRS) Maps". California Department of Transportation. Retrieved November 29, 2007.
  12. ^ O'Brien, J.F. (July–August 1954). "Eastshore Highway, Illustrated" (PDF). California Highways and Public Works. 33 (7–8): 10–11. ISSN 0008-1159.
  13. ^ Allen, Spencer F. (July–August 1960). "US 40-Richmond: Final Section Completed from Jefferson Ave. to El Cerito". California Highways and Public Works. 39 (7–8): 57. ISSN 0008-1159 – via
  14. ^ City of Emeryville, California. "Emeryville Comes of Age: 1930s to 1960s". City of Emeryville, California. Retrieved July 21, 2010.
  15. ^ "Eastshore Highway" (PDF). The Forge. El Cerrito Historical Society. Summer 2019.
  16. ^ Shell Oil Company (1956). San Francisco and Vicinity (Map). 1: 300,960. San Jose, California: Shell Oil Company – via David Rumsey Map Archive.
  17. ^ Shell Oil Company (1956). "Shell Street Map of East Bay Cities" (Map). Shell Street Guide of Oakland. 1:38,016. Chicago: H.M. Gousha Company. Retrieved April 15, 2020 – via David Rumsey Map Archive.
  18. ^ Carter, E.J. (May–June 1949). "Rapid Progress: East Shore Freeway in Oakland Nearing Completion". California Highways and Public Works. 28 (5–6): 6–10. ISSN 0008-1159 – via
  19. ^ "Highways with 70MPH Speed Limits". California Department of Transportation.
  20. ^ a b "Carpool Lanes". Metropolitan Transportation Commission. 2016. Archived from the original on June 3, 2016. Retrieved May 1, 2016.
  21. ^ "Chain Controls / Chain Installation". California Department of Transportation. Retrieved January 15, 2023.
  22. ^ "Truck Chain Requirements". California Department of Transportation. Retrieved January 15, 2023.
  23. ^ California Department of Transportation. "Elevation and Location of Summits and Passes in California". California Department of Transportation. Archived from the original (XLS) on November 7, 2009.
  24. ^ "Donner Summit". Retrieved 2017-01-05.
  25. ^ "Grade Climb & Descent Considerations". Retrieved 2017-08-14.
  26. ^ "End of US Highway 40". US
  27. ^ "California U.S. Highway 40". National Geographic, Sierra Nevada Tourism.
  28. ^ Estes, Griffin (March 29, 2015). "The Panhandle Freeway".
  29. ^ Faigin, Daniel P. (April 28, 2014). "Interstate Highway Types and the History of California's Interstates". California Highways. Retrieved April 28, 2014.
  30. ^ a b c d Fagin, Daniel P. (May 1, 2016). "Route 280". California Highways.
  31. ^ Edspein, Edward (April 18, 2000). "Underground Toll Roads Urged for S.F.: Transit group proposes 3 crosstown routes". San Francisco Chronicle.
  32. ^ Pivetti, Charles A. (July–August 1961). "Vallejo Freeway: Latest Survey Shows Marked Decline in Accident Rate". California Highways and Public Works. 40 (7–8): 25–26. ISSN 0008-1159 – via
  33. ^ "Sierra Passes: Annual Opening Presents Difficult Job". California Highways and Public Works. 36 (5–6): 31–33, 54. May–June 1957. ISSN 0008-1159 – via
  34. ^ "California State Parks Office of Historical Preservation". Retrieved 2013-07-07.
  35. ^ a b "Route Renumbering: New Green Markers Will Replace Old Shields". California Highways and Public Works. 43 (3–4): 11–13. March–April 1964. ISSN 0008-1159. Retrieved April 19, 2016 – via
  36. ^ a b Cooper, Casey. "1964 California Highway Renumbering".
  37. ^ Fagin, Daniel (May 2, 2016). "Routes 33-40". California Highways.
  38. ^ Sanderson, Dale (May 5, 2016). "Historic US highways endpoints in San Francisco, CA". USEnds.
  39. ^ "I-880 (decommissioned)". Kurumi.
  40. ^ "The California Quake: The Bay Bridge; Damage to Link Across Bay Is More Serious than Thought". The New York Times. October 20, 1989.[page needed]
  41. ^ "San Francisco Earthquake History 1915–1989: October 17, 1989". The Virtual Museum of the City of San Francisco. Museum of the City of San Francisco. n.d. Retrieved April 20, 2016.
  42. ^ California Department of Transportation. "San Francisco–Oakland Bay Bridge East Span Seismic Safety Project". California Department of Transportation.
  43. ^ Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.
  44. ^ a b c d "Construction Begins On I-80 Express Lanes Between Fairfield And Vacaville". CBS Sacramento. May 16, 2022. Retrieved September 21, 2022.
  45. ^ a b "The Bay Bridge Is Getting a New Yerba Buena Island Off-Ramp, Opening On Sunday". May 4, 2023.
  46. ^ "Will new Bay Bridge off-ramp to Yerba Buena help reduce traffic?". San Francisco Chronicle. May 4, 2023.
  47. ^ "Elevation and Location of Summits and Passes in California". California Department of Transportation. Archived from the original on March 1, 2017.

External links

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