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San Francisco's Freeway Plan (670 words) |
 | The Southern Crossing here was examined in detail in a 1956 study; the Oakland side would have had two approaches, one through Alameda and one along Doolittle to the I-880/Hegenberger interchange.[1] A late 1940s plan discussed adding a parallel Bay Bridge span, as well as a Southern Crossing bridge/tunnel. |
| I-280 was originally to follow the Junipero Serra and Park Presidio freeways toward the Golden Gate Bridge; a junction with an extended I-80 was deleted in the mid-1950s. |
| The Southern Freeway routing to I-80 at the Bay Bridge was adopted in 1961. |
| California Highways (www.cahighways.org): Southern California Freeway Development (Part 1 - 1940s) (895 words) |
| North of I-405, this corresponds to the unconstructed Route 47 freeway. |
| This corresponds to the present-day Route 2 freeway between I-5 and I-210. |
| This corresponds to the present-day Harbor Freeway, I-110. |
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