VTA Completes 83-Foot Tunnel Launch Shaft for $12.7B BART Silicon Valley Phase II, Readies Herrenknecht Boring Machine

The Santa Clara Valley Transportation Authority has finished the deep launch shaft at its Newhall Yard work site, clearing the way to lower a custom single-bore tunnel boring machine that will dig the five-mile subway to downtown San Jose and Santa Clara, with tunneling now expected to start in early 2028.