Boring Machines

Tunneling Work Set To Begin On San Francisco’s Central Subway ProjectTunneling work for the Central Subway project in San Francisco is set to begin in the coming weeks, with the underground work beginning at 4th and Harrison streets.
New Phase Of SF Central Subway Construction To Disrupt TrafficConstruction of the underground extension of San Francisco Muni’s T-Third line, better known as the Central Subway Project, is set to mark a milestone in the construction phase Tuesday - setting up some notable traffic disruptions.