From the East Bay
Head North on Interstate 80. Take the Tennessee exit. Go over the freeway heading West on Tennessee. Eventually you will cross Wilson and Tennessee will become Mare Island Causeway. You will cross the Mare Island bridge, but stay in your left lane. Take a left at Nimitz. Take a left at 4th St. The Coal Shed is on the left Bldg. 153. 

From Napa
Go South on Hiway 29/Sonoma Blvd. Take Hiway 37 West. After going over the bridge, take the first exit onto Mare Island (Walnut). Follow Walnut to the stop sign. Turn left onto G Street.  Turn right onto Nimitz. Take a left at 4th St. The Coal Shed is on the left Bldg. 153.

From Marin, Novato, Sonoma
Take Hiway 37 East. Take the first exit onto Mare Island (Walnut). Follow Walnut to the stop sign. Turn left onto G Street.  Turn right onto Nimitz. Take a left at 4th St. The Coal Shed is on the left Bldg. 153.

From Vallejo
Head West on Tennessee. Eventually you will cross Wilson and Tennessee will become Mare Island Causeway. You will cross the Mare Island bridge, but stay in your left lane. Take a left at Nimitz. Take a left at 4th St. The Coal Shed is on the left Bldg. 153.