The Boring Company is continuing tunneling operations for its Music City Loop transportation project in Nashville, with the company reporting that its second tunnel boring machine is now working through the city’s limestone.
In a Friday post on X, The Boring Company said, “Friday night tunneling in Nashville!” while providing an update on Prufrock-MB2, the project’s second tunnel boring machine.
“Prufrock-MB2 is through the Music City limestone using 1,000,000+ lb of axial thrust, and 4,000,000+ lb of lateral gripping force,” the company said.
The update follows the company’s August announcement that Prufrock-MB2 had officially launched after completing commissioning at the Lot 16 construction site.
The Boring Company previously said Prufrock-MB2 would spend its first several weeks undergoing testing and upgrades while excavation continued. A second vertical cassette designed to support continuous rock removal also became operational as the machine began tunneling.
The company says excavated material from the project site is transported to licensed disposal sites for construction material, while some material may be recycled or repurposed for uses including grading, concrete, and asphalt.
Tunneling progress comes as the Music City Loop project continues to expand its planned network of underground stations.
More than 40 stations were in various stages of planning and design as of the company’s August construction update. The Boring Company said it was working with property owners to advance station development along the tunnel alignment while pursuing additional partnerships.
Among the stations previously announced are locations serving Nashville International Airport, the Music City Convention Center, the Prime, Alcove, and Paramount residential towers, and the JW Marriott in downtown Nashville.
The company has said the first phase of the approximately $200 million project is expected to connect downtown Nashville with Nashville International Airport in roughly 10 minutes when it opens in spring 2027.
A third tunnel boring machine, Prufrock-MB3, is expected to arrive in Nashville this month after being constructed in Bastrop, Texas.
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Kaitlin Housler is a reporter at The Tennessee Star and The Star News Network.
Images by The Boring Company.
