Interstate 80 in California
Section of Interstate Highway in California, United States / From Wikipedia, the free encyclopedia
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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.
Interstate 80 | ||||
|---|---|---|---|---|
| Dwight D. Eisenhower Highway | ||||
 I-80 highlighted in red | ||||
| Route information | ||||
| Maintained by Caltrans | ||||
| Length | 205.07 mi[1][2] (330.03 km) | |||
| Existed | July 1, 1964[3]–present | |||
| Tourist routes |  Yuba-Donner Scenic Byway | |||
| NHS | Entire route | |||
| Restrictions | No 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 | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | San Francisco, Alameda, Contra Costa, Solano, Napa, Yolo, Sacramento, Placer, Nevada, Sierra | |||
| Highway system | ||||
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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.