| State Route 221 | ||||
|---|---|---|---|---|
| Socsol Avenue | ||||
| Route information | ||||
| Defined by S&HC § 521 | ||||
| Maintained by Caltrans | ||||
| Length: | 2.682 mi[1] (4.316 km) | |||
| Major junctions | ||||
| South end: | SR 12 / SR 29 near Vallejo | |||
| North end: | SR 121 in Napa | |||
| Highway system | ||||
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State highways in California(list • pre-1964)
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State Route 221 (SR 221) is a state highway in Napa County of the U.S. state of California.
It is a divided four-lane expressway that serves as an alternate to the nearby Route 29 freeway into Napa from the south. Route 221 is the northern part of the Napa-Vallejo Highway. It is only signed as a number on a junction sign at the intersection with Route 29. The southern terminus is with Route 29 (which also carries Route 12), where it continues as the Napa-Vallejo highway, and the northern terminus is with Route 121. Route 221 also provides access to Napa Valley College.
The entire route is in Napa County.
| Location | Postmile [1][2][3] |
Destinations | Notes | |
|---|---|---|---|---|
| 0.00 | Soscol Ferry Road | Continuation beyond SR 12 / SR 29 | ||
| 0.00 | SR 12 / SR 29 – Sonoma, Calistoga, Vallejo, Oakland | |||
| Kaiser Road | ||||
| Napa Valley Corporate Way, Anderson Road | ||||
| Napa | Streblow Drive – Napa Valley College | |||
| 2.68 | SR 121 (Imola Avenue, Soscol Avenue) – Lake Berryessa, Sonoma, Downtown Napa | |||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | ||||