|John B. Williams Freeway|
I-980 highlighted in red
|Defined by Streets and Highways Code § 624|
|Maintained by Caltrans|
|Length||2.027 mi (3.262 km)|
|Existed||1976 (FHWA); 1981 (state)–present|
|South end||I-880 in Oakland|
|North end||I-580 / SR 24 in Oakland|
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 980 was used as an alternate route between Oakland and San Francisco when the Cypress Viaduct carrying Interstate 880 collapsed in the Loma Prieta earthquake in 1989. Traffic headed from the south would have to use 980 to 580 west to Interstate 80 west to get across the Bay Bridge to reach San Francisco. This ended when Interstate 880 reopened on a new alignment in 1997 (1999 to and from I-80 east).
Although I-980 physically goes north and south, it is signed as an east–west route like SR 24. Immediately after traffic leaves I-880 on elevated connector ramps, I-980 then descends below grade to pass under downtown city streets. The freeway then ascends above grade to pass over San Pablo and 27th Street before reaching I-580 and SR 24.
The freeway itself lacks overhead guide signs mentioning I-980. Immediately after Exit 1B - 17th Street/San Pablo Avenue going eastbound on I-980 is a guide sign mentioning the junction with I-580. Likewise, the guide signs on westbound I-980 at Exit 1D - 18th Street list I-880 and San Jose as a control city. Since 2018, Jackson Street and I-880 south have been signed as exit 1B and 1A in the westbound direction.
I-980 is part of the California Freeway and Expressway System, and is part of the National Highway System, a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.
I-980 was added to the state highway system in 1947 as part of Legislative Route 226, and to the California Freeway and Expressway System in 1959. This segment of Route 226 became part of State Route 24 in the 1964 renumbering. The Federal Highway Administration approved the addition of the roadway to the Interstate Highway System in January 1976, with Interstate funding only used west of San Pablo Avenue, and the number was legislatively changed to 980 in 1981.
Construction on Interstate 980 began in the 1960s, but was not completed until 1985; officially the freeway was designated as I-980 from its opening. The surface roads which existed prior to the completion of the freeway had been designated as State Route 24.
It is assumed by many that had the San Francisco Bay Southern Crossing ever been built, it would have carried the designation of I-980; this remains purely speculative, however.
The San Francisco Chronicle reported in November 2015 about a grassroots organization of local architects and planners, and supported by Oakland mayor Libby Schaaf, that propose to replace I-980 with a landscaped city boulevard. ConnectOakland is coordinating the push for a replacement. Arguments for replacement focus on the freeway's low volume of traffic and negative impact on surrounding neighborhoods. In January 2017, I-980 was included in the Congress for the New Urbanism "Freeways without Futures" report.
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions). Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Oakland, Alameda County.
|0.01||1A||I-880 south (Nimitz Freeway) – San Jose||Westbound exit and eastbound entrance; west end of I-980; I-880 exit 42A northbound, signed as exit 1A westbound in 2018|
|0.01||1B||Jackson Street||Westbound exit only, signed as exit 1B westbound in 2018|
|0.01||1A||11th Street, 14th Street||Eastbound exit and westbound entrance only|
|0.01||1B||17th Street, San Pablo Avenue||Eastbound exit and westbound entrance only|
|0.54||1C||12th Street, 11th Street||Westbound exit and eastbound entrance only|
|0.90||1D||18th Street, 14th Street||Westbound exit and eastbound entrance only|
|0.90||2A||27th Street, West Grand Ave||Westbound exit and eastbound entrance only|
|2.03||—||I-580 (MacArthur Freeway) – San Francisco, Hayward||Eastbound exit and westbound entrance; east end of I-980; I-580 exit 19C eastbound, 19D westbound|
|2.03||—||SR 24 east (Grove-Shafter Freeway) – Berkeley, Walnut Creek||Continuation beyond I-980; CA 24 exit 2A|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015.
- "Article 2 of Chapter 2 of Division 1 of the California Streets and Highways Code". Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
- Federal Highway Administration (March 25, 2015). National Highway System: San Francisco, CA (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved July 22, 2017.
- 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.
- California State Assembly. "An act to provide for a system of public streets and highways..." Fifty-seventh Session of the Legislature, 1st extraordinary session. Statutes of California. State of California. Ch. 11 p. 3798.: "Route 226 is from a point in the vicinity of the intersection of Webster Street and Santa Clara Avenue in Alameda to a point on Route 5 [I-580] in Oakland."
- California State Assembly. "An act to amend Sections 306, 320, 332, 351, 362, 365, 369, 374, 382, 388, 397, 407, 408, 409, 410, 415, 422, 435, 440, 446, 453, 456, 460, 467, 470, 476, 487, 492, 493, 494, 506, 521, 528, and 529..." 1959 Session of the Legislature. Statutes of California. State of California. Ch. 1062 p. 3114.: "Route 226 [SR 61, SR 260, and I-980] from Route 258 [SR 13] near San Leandro to Route 5 [I-580]."
- California State Assembly. "An act to add Section 253 and Article 3 (commencing with Section 300) to Chapter 2 of Division 1 of, and to repeal Section 253 and Article 3 (commencing with Section 300) of Chapter 2 of Division 1 of, the..." 1963 Session of the Legislature. Statutes of California. State of California. Ch. 385 p. 1173.: "Route 24 is from: (a) Route 17 near Castro Street in Oakland to Route 580..."
- California Department of Transportation, State Highway Routes: Selected Information, 1994 with 1995 revisions
- California State Assembly. "An act to amend...the Streets and Highways Code, relating to state highways". 1981–1982 Session of the Legislature. Statutes of California. State of California. Ch. 292 p. 1419.: "Route 980 is from Route 17 in Oakland to Route 580."
- "Interstate 980 California @". Interstate-guide.com. Retrieved 2013-01-26.
- King, John (November 14, 2015). "Oakland moving in right direction with idea to replace I-980". San Francisco Chronicle. Retrieved November 16, 2015.
- "Report: Oakland's I-980 on national 'top ten' list for teardown". Retrieved 2017-02-04.
- "Freeways Without Futures 2017". CNU. 2017-01-26. Retrieved 2017-02-04.
- Warring, KS (April 18, 2008). "Interstate 980 Freeway Interchanges" (PDF). California Numbered Exit Uniform System. California Department of Transportation. Retrieved September 1, 2014.
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