The Broadway Tunnel in San Francisco is a structure at Russian Hill which connects the neighborhood Chinatown to North Beach. The tunnel was included in the 1948 San Francisco Trafficways Plan as a connector between the Central Freeway and Embarcadero Freeway. The structure was completed in December 1952 and spans 1,616 feet through Russian Hill. The Broadway Tunnel was designated as the Robert C. Levy Tunnel in 1986.
https://www.gribblenation.org/2024/08/san-franciscos-broadway-tunnel.html?m=1
I don't think I've driven through it, or the Stockton tunnel around the corner, but they're on the regular route of the San Francisco Friday Night Skate, so I've done them on eight wheels.
It's a great way out of Chinatown/North Beach, I can only imagine when the EC ramps led to it how fast it would be to cut over to 101/GGB.