The Boring Company said construction of its Music City Loop project in Nashville is accelerating, with two tunnel boring machines now operating simultaneously and two more expected to join before the end of the year.
In an October 1 blog post, the company said Prufrock-MB1 and Prufrock-MB2 are both actively tunneling, marking the first time the project has had two tunnel Boring machines operating at the same time.
The company said it plans to launch Prufrock-MB3 later this month, while Prufrock-MB4 is currently under construction. The Boring Company said it aims to have all four machines in the ground before the end of 2026.
The latest update follows a September report that Prufrock-MB2 had begun tunneling through Nashville limestone after launching from the Lot 16 construction site.
The Boring Company said its Nashville team has made more than 300 upgrades to Prufrock-MB1, and incorporated those improvements into subsequent machines. The company said it can typically design, fabricate, ship, and install upgrades within 48 hours.
Preparation is also underway for the launch of Prufrock-MB3, including excavating a launch pit, installing electrical capacity to support two tunnel boring machines, and constructing support facilities.
The company said it has obtained all permits and approvals required ahead of tunneling.
The Music City Loop’s planned network continues to grow, with more than 40 stations in various stages of planning and design.
The project received approval for 25 miles of tunnel within the Tennessee Department of Transportation right-of-way following more than seven months of technical review. Nashville International Airport and the Music City Convention Center Authority have each unanimously approved Loop connections, while agreements have also been reached for stations at the Prime, Alcove, and Paramount residential towers and the JW Marriott in downtown Nashville.
The first phase of the roughly $200 million project is expected to connect downtown Nashville with Nashville International Airport, with the company previously projecting a travel time of approximately 10 minutes when the system opens in spring 2027.
The Boring Company also said it has engaged with more than 275 community, educational, nonprofit, and professional organizations and participated in more than 160 volunteer events across Middle Tennessee.
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Kaitlin Housler is a reporter at The Tennessee Star and The Star News Network.
Photo “Music City Loop Construction” by Boring Company.
