Interstate 80 in California facts for kids

Quick facts for kids Interstate 80
Dwight D. Eisenhower Highway
I-80 highlighted in red
Route information
Defined by S&HC § 380
Maintained by Caltrans
Length	205.07 mi (330.03 km) 199.24 miles (320.65 km) per FHWA
Existed	July 1, 1964–present
Tourist routes	Yuba-Donner Scenic Byway
Restrictions	No flammable tank vehicles or explosives on the Bay Bridge
Major junctions
West end	US 101 in San Francisco
	I-580 from Oakland to Albany I-880 in Oakland I-780 in Vallejo I-680 in Fairfield I-505 in Vacaville US 50 / I-80 Bus. in West Sacramento I-5 / SR 99 in Sacramento I-80 Bus. in North Highlands SR 49 in Auburn SR 89 / SR 267 in Truckee
East end	I‑80 at Nevada state line near Verdi, NV
Location
Counties:	San Francisco, Alameda, Contra Costa, Solano, Napa, Yolo, Sacramento, Placer, Nevada, Sierra
Highway system
Main route of the Interstate Highway System Main • Auxiliary • Business State highways in California(list • pre-1964) History • Unconstructed • Deleted • Freeway • Scenic ← SR 79 US 80 →

Interstate 80 (I-80) is a very long highway that crosses the United States. It stretches all the way from San Francisco, California, to Teaneck, New Jersey. The part of I-80 in California starts in San Francisco. It crosses the famous San Francisco–Oakland Bay Bridge to reach Oakland.

From Oakland, I-80 turns north and crosses the Carquinez Bridge. Then, it heads northeast through the Sacramento Valley. After that, I-80 goes over the Sierra Nevada mountains, reaching its highest point at Donner Summit. Finally, it crosses into Nevada near the Truckee River. The speed limit on most of I-80 in California is 65 miles per hour (105 km/h). This is because much of the road is in cities or mountains.

I-80 in California was built along an older highway called US Route 40. This older route followed historic paths like the California Trail and Lincoln Highway. The path of I-80 has changed a few times. For example, in San Francisco and Sacramento, original plans were changed due to local protests.

Exploring the Route of I-80

The entire Interstate 80 in California is officially called "Route 80" in the state's highway system. It starts near Route 101 in San Francisco. It then goes through Oakland and Sacramento. After that, it passes near Roseville, Auburn, Emigrant Gap, and Truckee. Finally, it reaches the Nevada state line near Verdi, Nevada.

I-80 is also known as the Dwight D. Eisenhower Highway in the western U.S. It is part of the California Freeway and Expressway System. This means it's a major highway designed for fast travel. It's also part of the National Highway System. This system includes roads important for the country's economy and defense. A section of I-80 from Emigrant Gap to Truckee is part of the Yuba–Donner Scenic Byway. This is a special road known for its beautiful views.

San Francisco Bay Area Journey

The western start of I-80 in San Francisco, looking from northbound US 101

Most maps show I-80 starting where it meets US 101 in San Francisco. However, federal records say it starts closer to the San Francisco–Oakland Bay Bridge. This first part of I-80 is sometimes called the San Francisco Skyway. Even with different starting points, it's always shown as I-80 on maps.

Eastshore Freeway Section

The Eastshore Freeway is a part of I-80 and I-580. It runs along the eastern edge of San Francisco Bay. It starts near the San Francisco–Oakland Bay Bridge and goes to the Carquinez Bridge. A busy section of this freeway is where I-80 and I-580 share the road. This part can get very crowded during busy times because several major highways meet here.

Eastshore Freeway in Berkeley, looking south toward Pacific Park Plaza in Emeryville

The Eastshore Freeway was built in the 1950s. It was created by improving an older road from the 1930s. This older road was part of US 40. To build the highway, parts of the bay's muddy areas were filled in. This created a new area called Aquatic Park in Berkeley. The old name "Eastshore Highway" is still used for some local roads next to the freeway.

Central Valley Drive

This part of I-80 has a speed limit of 65 mph (105 km/h). This is a bit lower than the 70 mph (113 km/h) limit found on many rural California freeways. In Fairfield, I-80 has six to eight lanes, including special lanes for cars with multiple passengers (carpool lanes).

Bats flying from under the Yolo Causeway in Yolo County

The path of I-80 has changed in the Sacramento area. Today, it goes around the northern part of the city. This route was originally called I-880. The old I-80 route through Sacramento is now called US 50 and I-80 Business. The new path was chosen because the old one didn't meet modern highway standards.

Sierra Nevada Mountain Crossing

When I-80 crosses the Sierra Nevada mountains, it often gets snow from fall to spring. The California Department of Transportation (Caltrans) sometimes requires vehicles to use snow tires or snow chains. These help cars grip the road better in icy or snowy conditions. Trucks must carry chains during winter, even if they aren't needed right away.

I-80 crosses the Sierra Nevada at Donner Summit. This spot is very high up, about 7,239 feet (2,206 meters) for westbound traffic. There's a rest area at the summit. The pass is usually open all year. Snowplows keep it clear, but it might close during very heavy snowstorms. The older US 40 route over Donner Pass is a bit south of the current I-80. I-80 was built with gentler slopes and curves, making it safer and easier to drive.

• I-80 across the Sierra Nevada
• 

  Looking northeast along I-80 in the Sierra Nevada from the Yuba Gap overpass

• 

  Sign for Donner Summit

• 

  Entering California from Nevada along I-80

• 

  Elevations along a 100-mile (160 km) stretch of the I-80, peaking at Donner saddle

History of I-80

Old Highway Paths

A sign in California recognizing an old alignment of US 40

In California, I-80 was built mostly along the path of US 40. US 40 was removed from California's highway system in 1964. US 40 was one of the first U.S. routes created in 1926. Before the San Francisco–Oakland Bay Bridge opened in 1936, cars would take a ferry from Berkeley to San Francisco. After the bridge was built, US 40 and US 50 used the bridge.

US 40 and US 50 shared the Bay Bridge. They split up in Oakland at a place called the MacArthur Maze. US 40 then followed a path very similar to today's I-80. In Sacramento, US 40 and US 50 joined again. US 40 then split off again and followed what is now I-80 Business. This was the original I-80 route from 1957 to 1981. Later, I-80 was moved to a new path around Sacramento. US 40 then continued through the Sierra Nevada mountains into Nevada, just like I-80 does today.

A part of the old US 40 near Donner Lake is still there. It's an alternate route to I-80. It goes right by Donner Lake, while I-80 goes higher up in the mountains.

Building the Highway

Original Plans in San Francisco

The Panhandle Freeway was in the 1948 San Francisco freeways plan.

When I-80 was first planned, it was supposed to start in Golden Gate Park. It would have gone east on a freeway that was never built, called the Panhandle Freeway. Then it would have connected to the San Francisco Skyway. However, in 1964, people in the community protested. This led Caltrans to cancel the Panhandle Freeway project. The starting point of I-80 was then changed to the Embarcadero Freeway. Even though some parts of the original plan were canceled, the San Francisco Skyway is still considered part of I-80 today.

What I-80 Changed

Before I-80 was built, the old US 40 road had many accidents. This was because it had many traffic lights and stop signs that appeared suddenly. Caltrans said that building I-80 would make the road much safer. A study in Vallejo showed that after the freeway was built, the accident rate dropped by 73 percent.

The new I-80 also made traveling across the Sierra Nevada mountains much easier. The old US 40 was a narrow, winding road that often closed in winter due to heavy snow at Donner Pass. Drivers had to take a much longer route. With I-80, crossing the mountains became much simpler. The new Donner Summit pass is usually only closed during the worst snowstorms.

Bay Bridge Rebuilt

Collapsed upper deck section of the San Francisco–Oakland Bay Bridge, 1989

On October 17, 1989, a big earthquake called the Loma Prieta earthquake hit. It caused a lot of damage and sadly, many people died or were hurt. The San Francisco–Oakland Bay Bridge, which is part of I-80, was badly damaged. A large section of the upper deck on the eastern side fell onto the lower deck. Caltrans quickly fixed the bridge, and it reopened on November 18, 1989.

New eastern span of San Francisco–Oakland Bay Bridge, 2013

Because of the earthquake risk, Caltrans started building a new eastern part of the Bay Bridge in 2002. This new part was designed to be much stronger and safer in an earthquake. The new eastern span opened on September 2, 2013. It cost about $6.4 billion to build.

Express Lanes Added

In May 2022, Caltrans started building special lanes called high-occupancy toll (HOT) lanes on I-80. These lanes are between Fairfield and Vacaville. They are about 18 miles (29 km) long. These lanes allow cars with multiple passengers to use them for free, while single-driver cars can pay a toll. The project also changed existing carpool lanes into HOT lanes. These new lanes were completed in 2025. They use a system where you pay tolls without stopping at a booth, using a device called a FasTrak transponder.

In May 2024, more money was approved to add HOT lanes between Davis and West Sacramento. These lanes will help reduce traffic in those areas.

Exit List

County	Location	Mile	Roads intersected	Notes
City and County of San Francisco		0.00– 0.91	0.00– 1.46	1A	US 101 south (Bayshore Freeway) – San Jose	Western terminus; US 101 north exit 433B, south exit 433
				1B	US 101 north (Central Freeway) – Golden Gate Bridge
				1	Seventh Street	Eastbound exit and westbound entrance
				1C	Ninth Street – Civic Center	Westbound exit and eastbound entrance
		1.91– 2.02	3.07– 3.25	2A	Fifth Street	Westbound exit and eastbound entrance
				2	Fourth Street	Eastbound exit and westbound entrance
				2B	Harrison Street / Embarcadero	Westbound exit and eastbound entrance; former Fremont Street exit
				2C	Fremont Street / Folsom Street	Westbound exit and eastbound entrance; provides buses only access to Salesforce Transit Center; former Main Street / SR 480 exit
San Francisco Bay		3.75	6.04	San Francisco–Oakland Bay Bridge (west span)
City and County of San Francisco		4.18	6.73	4A	Treasure Island	Eastbound 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
				Yerba Buena Tunnel
				4B	Yerba Buena Island / Treasure Island	Signed 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; connects to Macalla Road/Hillcrest Road
San Francisco Bay		5.31	8.55	San Francisco–Oakland Bay Bridge (east span; westbound toll only)
Alameda	Oakland	7.83	12.60	8A	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 only	Access via the HOV lane; entrance to Bay Bridge via left turn at a stop sign at the west side of the complex
				8A	West Grand Avenue, Maritime Street	Westbound signage; eastbound access via exit 8A/I-880; last free exit for westbound traffic
		8.13	13.08	8B	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
	Emeryville	9.10	14.65	9	Powell Street – Emeryville	No eastbound exit from I-880 north
	Emeryville–Berkeley line	9.89	15.92	10	SR 13 (Ashby Avenue) / Shellmound Street	Shellmound Street accessible eastbound only
	Berkeley	11.13	17.91	11	University Avenue – Berkeley	Serves UC Berkeley
		11.91	19.17	12	Gilman Street
	Albany	12.61	20.29	13A	Buchanan Street – Albany	Eastbound signage; partially rebuilt as part of 1990s reconstruction of the Hoffman Split interchange
		12.91	20.78	13B	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
				13	Albany	Westbound signage; connects to Cleveland Avenue
				—	Pierce Street	Former eastbound exit and entrance; demolished during the 1990s reconstruction of the Hoffman Split interchange
Contra Costa	Richmond	13.57	21.84	14A	Central Avenue – El Cerrito	El Cerrito not signed westbound
		14.35	23.09	14B	Carlson Boulevard
	Richmond–El Cerrito line	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
	Richmond	18.60	29.93	19A	El Portal Drive
		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	Richmond Parkway, Fitzgerald Drive to I-580 west	Unconstructed SR 93
		20.95	33.72	21	Appian Way
		21.86	35.18	22	Pinole Valley Road
	Hercules	23.41	37.67	23	SR 4 east – Hercules, Stockton	Eastbound signage; no westbound access to SR 4 east; SR 4 exit 1B
					Hercules	Westbound signage
		24.04	38.69	24	Willow Avenue – Rodeo
	​	26.10	42.00	26	Cummings Skyway to SR 4 east – Martinez, Concord
	​	26.84	43.19	27	Pomona Street – Crockett, Port Costa	Last free exit for eastbound traffic
Carquinez Strait		27.49	44.24	Carquinez Bridge (eastbound toll only)
Solano	Vallejo	28.63– 28.79	46.08– 46.33	29A	SR 29 north (Sonoma Boulevard)	Eastbound exit and westbound entrance
					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 east to I-680 – Benicia, Martinez	Provides exit to Curtola Parkway; I-780 is former I-680 south; I-780 exit 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 / 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
		34.12	54.91	Hunter Hill Rest Area (westbound only)
Napa–Solano county line		35.59	57.28	36	American Canyon Road
Solano	Fairfield	38.88	62.57	39A	Red Top Road	Signed as exit 39 eastbound
				—	I-80 Express Lanes	West end of express lanes-under construction; scheduled to open in 2025
				39B	SR 12 west – Napa, Sonoma	Western end of SR 12 overlap; eastbound access is via exit 40
		40.34– 40.99	64.92– 65.97	40	Green Valley Road to SR 12 west	Westbound access 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, Green Valley Road	Green Valley Road not signed eastbound; Pittman Road not signed westbound
		43.32	69.72	43	SR 12 east – Suisun City, Rio Vista	Eastern end of SR 12 overlap; westbound access is via exit 43
		43.64	70.23	44A	Suisun Parkway to SR 12 east – Rio Vista	Signed as exit 43 westbound
		44.22	71.17	44B	West Texas Street, Rockville Road	Signed as exit 44 westbound
		45.42	73.10	45	Travis Boulevard
		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
	Vacaville	50.62	81.46	51A	Lagoon Valley Road, Cherry Glen Road
		51.16	82.33	51B	Peña Adobe Road
				52	Cherry Glen Road	Westbound exit only
		52.81	84.99	53	Alamo Drive, Merchant Street
		53.51	86.12	54A	Davis 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
				—	I-80 Express Lanes	East end of express lanes-under construction; scheduled to open in 2025
		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
		64.38	103.61	64	Pitt School Road
		65.70	105.73	66A	SR 113 south (First Street) / Currey Road – Dixon	Western 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)
	​	68.74	110.63	69	Kidwell Road
	​	70.16	112.91	70	SR 113 north (Vic Fazio Highway) – Woodland	Eastern end of SR 113 overlap; SR 113 exits 26A-B
	​	70.50	113.46	71	UC Davis	Connects to 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)
	​	78.00	125.53	78	Road 32A, East Chiles Road
	Yolo Bypass	78.02– 79.46	125.56– 127.88	Yolo Causeway
	West Sacramento	81.39	130.98	81	West Capitol Avenue, Enterprise Boulevard	West Capitol Avenue was former US 40 east / US 99W south
		82.12	132.16	82	US 50 east (I-305 east / I-80 Bus. east (Capital City Freeway)) – 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
		83.46	134.32	83	Reed Avenue (SR 84)
Sacramento	Sacramento	85.29	137.26	85	West El Camino Avenue
		86.48	139.18	86	I-5 to SR 99 – Los Angeles, Redding	I-5 exit 522
		87.58	140.95	88	Truxel Road
		88.91	143.09	89	Northgate Boulevard
		90.05	144.92	90	Norwood Avenue
		91.56	147.35	91	Raley Boulevard, Marysville Boulevard – Del Paso Heights
		92.60	149.03	92	Winters Street
		93.33	150.20	93	Longview Drive
	North Highlands	94.29– 94.83	151.75– 152.61	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; 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
				94A	Watt Avenue	Westbound access via exit 95
				94B	Auburn Boulevard (SR 244)
		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
		96.41	155.16	96	Madison Avenue
	Foothill Farms–Carmichael line	98.38	158.33	98	Greenback Lane, Elkhorn Boulevard (CR E14)
	Citrus Heights	100.62	161.93	100	Antelope Road
Sacramento–Placer county line	Citrus Heights–Roseville line	102.20	164.47	102	Riverside Avenue, Auburn Boulevard – Roseville, Citrus Heights	Former US 40 / US 99E / SR 65
Placer	Roseville	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, Taylor Road, Eureka Road	Taylor Road not signed eastbound; signed as exits 105A (Eureka Road) and 105B (Atlantic Street, Taylor Road) westbound
		105.59	169.93	105B	Taylor Road, Pacific Street	Westbound exit is via exit 105A
	Roseville–Rocklin line	106.09	170.74	106	SR 65 north – Lincoln, Marysville	SR 65 exits 306A-B
	Rocklin	107.99	173.79	108	Rocklin Road
		109.35	175.98	109	Sierra College Boulevard (CR E3)
	Loomis	110.65	178.07	110	Horseshoe Bar Road
	Penryn	112.28	180.70	112	Penryn Road – Penryn
	Newcastle	115.74	186.27	115	Newcastle Road – Newcastle
		116.23	187.05	116	SR 193 west – Lincoln	Western 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
		119.47	192.27	119B	SR 49 north (Grass Valley Highway) – Grass Valley	Western end of SR 49 overlap
		119.76	192.74	119C	SR 49 south (SR 193 east, Elm Avenue) – Placerville	Eastern end of SR 49 / SR 193 overlap
	Auburn–North Auburn line	120.87	194.52	120	Lincoln Way, Russell Road	No eastbound entrance
	North Auburn	121.40	195.37	121	Auburn Ravine Road – Foresthill
		122.06	196.44	122	Bowman	Connects to Bowman Road
	​	123.06	198.05	123	Bell Road
	​	124.14	199.78	124	Dry Creek Road
	​	125.36	201.75	125	Clipper Gap, Meadow Vista	Connects to Placer Hills Road
	​	128.14	206.22	128	Applegate	Connects to Crother Road
	​	129.32	208.12	129	Heather Glen	Connects to Applegate Road and Geisendorfer 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
	​	143.68	231.23	Gold Run Rest Area
	​	144.13	231.95	144	Gold Run	Westbound exit and eastbound entrance; connects to Gold Run Road and Hi Sierra Drive
	​	145.10	233.52	145	Dutch Flat	Connects to Canyon Creek Road and Ridge Road
	​	146.68	236.06	146	Alta	Connects to Alta Bonnynook Road and Morton Road
	Alta	148.24	238.57	148A	Crystal Springs	Connects to Crystal Springs Road
	​	148.87	239.58	148B	Baxter	Connects to Baxter Road
	​	150.93	242.90	150	Drum Forebay Road
	​	155.29	249.92	155	Blue Canyon	Connects to Blue Canyon Road
	​	156.74	252.25	156	Nyack Road
	​	157.99	254.26	158A	Emigrant Gap	Signed as exit 158 westbound; connects to Emigrant Gap Road
	​	158.79	255.55	158B	Laing Road	Eastbound exit only
Nevada	​	160.77	258.73	160	Yuba Gap	Connects to Lake Valley Road
	​	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	Connects to Cisco Road
	​	166.73	268.33	166	Big Bend	Eastbound exit only; connects to Hampshire Rocks Road
	​	168.13	270.58	168	Rainbow Road – Big Bend
	Kingvale	171.16	275.46	171	Kingvale	Connects to Donner Pass Road
Nevada	Soda Springs	173.84	279.77	174	Soda Springs, Norden	Connects to Donner Pass Road; former US 40
	​	176.23	283.61	176	Boreal Ridge Road – Castle Peak
	​	176.66	284.31	Donner Summit Rest Area
	​	176.90– 176.99	284.69– 284.84	Donner Summit, elevation 7,227 feet (2,203 m) eastbound, 7,239 feet (2,206 m) westbound
	Truckee	180.16	289.94	180	Donner Lake	Connects to Donner Lake Road
		184.91	297.58	184	Donner Pass Road	Former US 40
		185.86	299.11	185	SR 89 south – Lake Tahoe	Western end of SR 89 overlap
		186.67	300.42	186	Central Truckee	No eastbound entrance; connects to Donner Pass Road; former US 40
		187.99	302.54	188A	Truckee	Eastbound exit and westbound entrance; connects to Truckee Way
		188.30	303.04	188B	SR 89 north / SR 267 south – Sierraville, Lake Tahoe	Eastern end of SR 89 overlap; signed as exit 188 westbound
		189.98	305.74	190	Overland Trail	Formerly Prosser Village Road
		190.96	307.32	Agricultural Inspection Station (westbound only)
		194.11	312.39	194	Hirschdale Road
	Floriston	198.99	320.24	199	Floriston	Connects to Floriston Way
	​	201.19	323.78	201	Farad	Connects to Mystic Road
Sierra	​	205.07	330.03		I‑80 east – Reno	Continuation into Nevada
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Other Highways Connected to I-80

Many other Interstate highways are connected to I-80 in California, especially around the San Francisco Bay Area. These are called "auxiliary" Interstates.

• I-280 runs from San Jose north to San Francisco.
• I-380 connects I-280 in San Bruno to US 101 near San Francisco International Airport.
• I-580 goes from San Rafael east to I-5 in the Central Valley.
• I-680 runs from San Jose north to I-80 in Fairfield, curving around the eastern side of the Bay Area.
• I-780 connects I-80 in Vallejo with I-680 in Benicia.
• I-880 connects San Jose with I-80 and I-580 in Oakland. It runs along the eastern shore of San Francisco Bay.
• I-980 connects I-880 with I-580 in Oakland.

There's also a special highway called I-238. It connects I-580 in Castro Valley with I-880 in San Leandro. Even though its number doesn't follow the usual rules for Interstates, it's still connected to the I-80 family of roads.

A special loop of I-80, called I-80 Business, goes through Sacramento. This used to be the main I-80 route.

Some Interstate routes that were once connected to I-80 no longer exist:

• I-180 was a name for part of the Richmond–San Rafael Bridge for a few years. It later became part of I-580.
• I-480 was planned for San Francisco. Only parts of it were built, like the Embarcadero Freeway. This freeway was taken down after the 1989 earthquake.
• I-880 was the original name for the northern bypass freeway in Sacramento. I-80 was later moved to this route.

See also

In Spanish: Interestatal 80 (California) para niños