Ketron Voices Concerns Over Nashville Boring Tunnel Project
The official questions the safety of a proposed underground tunnel system linking downtown Nashville to the airport.
Updated on Oct. 27, 2026 in Electric Vehicles
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Bill Ketron has expressed reluctance regarding a planned 9.5-mile tunnel project by The Boring Company meant to connect downtown Nashville to Nashville International Airport. The project faces scrutiny from the Southern Environmental Law Center over potential risks to local geology.
Why it matters
Lawmakers advocate for the tunnel as a way to reduce interstate traffic congestion, while critics warn that the region's karst geology creates significant environmental hazards. The state has already granted the company underground access rights to support the infrastructure investment.
The proposed tunnel is set to be 13 feet in diameter and located between 30 and 60 feet underground. Construction plans utilize pre-fabricated concrete shipped from Nevada to support the structure.
The players
Bill Ketron
He is an official currently questioning the viability of the proposed subterranean transit system.
The Boring Company
This infrastructure firm is responsible for the design and construction of the Nashville tunnel project.
Southern Environmental Law Center
The organization issued a report outlining potential sinkhole and groundwater contamination risks associated with the tunnel.
Bill Lee
He serves as the Governor of Tennessee and has supported the transfer of right-of-way to the company.
The details
The project is overseen by the Tennessee Subterranean Transportation Infrastructure Coordinator Authority and aims to transport passengers via all-electric Tesla vehicles. The current route is planned to run beneath the Cumberland River, Browns Creek, and Mill Creek, prompting investigations into karst features.
Timeline
2017: Bill Ketron questioned a prior tunnel proposal.
October 26, 2026: Bill Ketron voiced his reluctance regarding the current project.
Roadmap
This project represents a shift toward private underground transit solutions as a potential remedy for traditional interstate congestion. It follows a pattern set by the 2017 Nashville transportation plan where large-scale infrastructure investments face intense public and legislative scrutiny.
Commuters should anticipate potential long-term changes to transit routing if the project proceeds as planned. Residents living near the proposed tunnel route may experience ongoing monitoring of karst features and underground water stability.
The takeaway
Large-scale infrastructure projects in regions with complex geology require rigorous environmental vetting to ensure public safety. Officials are balancing the potential for reduced traffic against the significant technical risks of subterranean construction.
Further reading
Find more updates on local transport initiatives in the Electric Vehicles section.
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