Since LA Metro’s tunnel boring machine was lowered into the ground at the La Brea site in October 2018, the machine has burrowed about 60 feet per day.Photo – LA Metro
The Los Angeles County Metropolitan Transportation Authority (LA Metro) earlier this week announced that its first tunnel boring machine has broken through from the Wilshire/La Brea Station site to the Wilshire/Western Terminus in Los Angeles.
The boring machine is one of two being used to mine parallel subway tunnels to extend LA Metro’s Purple Line from the current Wilshire/Western Terminus to the Wilshire/La Brea Station site.
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