Drive 11-miles north on highway-49 toward Downieville. Turn right onto Tyler Foote Road, stay on the pavement and follow the yellow line to the park. The road changes names a few times (Curzon Grade Road, Back Bone Road, Derbec Road, North Bloomfield Road).
These are not high-speed roads. The park is 26-miles from Nevada City.
The park is open every day from sunrise to sunset. The museum is open Saturdays and Sundays from 10:00am to 4:00 pm through September. Tours of the townsite are offered at 1:30pm on days the museum is open.