The Golden Gate Bridge, Highway and Transportation District is a special district of the State of California which operates and maintains the Golden Gate Bridge and two unified public transit systems – Golden Gate Transit and Golden Gate Ferry – connecting the counties of Marin, Sonoma, San Francisco, and Contra Costa. Golden Gate Transit operates several routes that connect cities in Sonoma County with Marin and San Francisco. Visit the website to plan your trip, get fare information, learn how to purchase passes, see routes and schedules and for more information.