From the Peninsula/South Bay
Take I-280 North (or US 101 North to I-280 North) to the Mariposa Street exit. Turn right on Mariposa Street, then left on Third Street to get to the parking lots.
From the East Bay
Take I-80/Bay Bridge to the Fifth Street exit. Turn right on Fifth Street, right on Folsom Street, then right on Fourth Street. Merge into the left lane and continue on Fourth Street to the parking lots (across bridge).
From the North Bay
Take US 101 South/Golden Gate Bridge to the Downtown/Lombard Street exit. Turn right on Van Ness Avenue, then left on Golden Gate Avenue. Turn right on Hyde Street and go straight across Market Street to Eighth Street. Turn left on Bryant Street and right on Fourth Street to the parking lots (across bridge).
The Giants encourage the use of public transportation as the primary means of getting to the ballpark. Parking, however, will be provided to meet the demands of those who wish to drive to the ballpark. In addition to the 6,500 parking spaces that currently exist within a 5-10 minute walk of the ballpark site, the Giants provide up to 5,000 additional spaces dedicated for ballpark use
AT&T Park is served by more public transportation than any other ballpark in the country and is within walking distance of downtown and many city neighborhoods. Fans are able to take Muni Metro streetcars and trolley busses, BART (via an in-station link to Muni Metro), CalTrain, buses and ferries to the new ballpark. Those choosing to drive to the ballpark have easy access to AT&T Park via the Bay Bridge, Highways 101 and 280 and major San Francisco thoroughfares, including Third Street and the Embarcadero.