https://www.dallasnews.com/news/2019/12/03/officials-christen-the-great-big-digging-machine-that-will-carve-a-5-mile-tunnel-under-dallas/
Crews are nearly set to begin digging a miles-long tunnel under Dallas that, when it’s operational in 2023, will provide flooding relief to parts of the city that have historically gone underwater during heavy downpours.
The Mill Creek Tunnel will stretch from Uptown Dallas, near Woodall Rodgers Freeway, to White Rock Creek and Barber Avenue in South Dallas.
City Council member Lee Kleinman lauded the tunnel boring machine that will carve out the tunnel as a “modern engineering marvel right in our own backyard.” It’s 38 feet in diameter and 230 feet long, and its spinning head will cut a five-mile path through rock 100 to 150 feet below the city’s surface.
David Adams