Directions from San
Francisco:
- Take I-80 East ramp towards Oakland
Merge onto I-80 E.
At Bay Bridge take I-80 E/I-580 W.
Take I-80 towards Vallejo/Sacramento.
Merge onto I-80 E.
Take the CA-37/Columbus Pkwy. exit towards Napa.
Keep left at the fork in the ramp.
Merge onto Marine World Pkwy./CA-37 W.
Turn right onto Broadway St. (Hwy. 29)
Turn right onto Green Island Road.
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