Back Interstate 205 (Kalifornien) German Interestatal 205 (California) Spanish Interstate 205 (Californie) French Interstate 205 (Californië) Dutch Autostrada międzystanowa nr 205 (Kalifornia) Polish 205號州際公路 (加利福尼亞州) Chinese
&sq=Bangladesh&lang=en&file=File:I-205_(CA).svg) Interstate 205 | ||||
|---|---|---|---|---|
| Robert T. Monagan Freeway | ||||
 I-205 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-5 | ||||
| Maintained by Caltrans | ||||
| Length | 12.97 mi[1] (20.87 km) | |||
| Existed | December 1970–present | |||
| History | State highway in 1910 | |||
| NHS | Entire route | |||
| Major junctions | ||||
| West end |  I-580 near Tracy | |||
| East end |  I-5 near Lathrop | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | Alameda, San Joaquin | |||
| Highway system | ||||
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Interstate 205 (I-205) is an east–west auxiliary Interstate Highway in the San Joaquin Valley in Northern California. It runs from I-5 west to I-580. Along with those highways, I-205 forms the north side of a triangle around the city of Tracy. The route provides access from the San Francisco Bay Area to the northern San Joaquin Valley.
When I-205 opened in December 1970, it replaced 11th Street, which passed through downtown Tracy, as part of the primary all-land connection between the Bay Area and Sacramento until the Carquinez Bridge opened in 1927 and carried the Lincoln Highway and later US Route 50 (US 50). 11th Street is now signed as I-205 Business (I-205 Bus.).
- ^ Starks, Edward (January 27, 2022). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved March 19, 2023.