 State Route 29 | ||||
|---|---|---|---|---|
 SR 29 highlighted in red | ||||
| Route information | ||||
| Maintained by Caltrans | ||||
| Length | 105.648 mi[1] (170.024 km) | |||
| Existed | 1934–present | |||
| Major junctions | ||||
| South end |  I-80 in Vallejo | |||
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| North end |  SR 20 at Upper Lake | |||
| Location | ||||
| Country | United States | |||
| State | California | |||
| Counties | Solano, Napa, Lake | |||
| Highway system | ||||
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State Route 29 (SR 29) is a state highway in the U.S. state of California that travels from Interstate 80 in Vallejo north to State Route 20 in Upper Lake. It serves as the primary road through the Napa Valley, providing access to the Lake County region to the north and the rest of the San Francisco Bay Area to the south.