When driving westbound on the San Francisco–Oakland Bay Bridge (I-80) toward downtown San Francisco:
Do not take Exit 7A (Fremont St/Folsom St)—it merges from the right and can be congested. Exit 7B is the most direct route to the Financial District, Embarcadero, and Mission Bay.
Signage reads “Main St / Fremont St.” Follow it for the quickest access.