From SFO:

Take 101 N toward San Francisco.  Take I-80 East (toward Bay Bridge/Oakland/Seventh Street/US-101 North).  Take the Fourth Street exit toward Embarcadero, and turn slight left onto Bryant Street.  Turn left onto Third Street.  Third Street becomes Kearny Street.  Turn right onto California Street.

      From the East Bay:

Take 80 W towards San Francisco and continue across the Bay Bridge.  Take the Fremont Street exit, and turn left onto Fremont.  Fremont Street becomes Front Street.  Turn left onto Pine Street, and right onto Sansome Street.  Turn left onto California Street.

     From the North Bay:

Take 101 S towards San Francisco.  Turn right onto Van Ness Avenue.  Turn left onto Broadway Street, and continue through Broadway Tunnel.  Turn right onto Battery Street, and right onto California Street.