Sinkhole Closes Primary Runway at Tri-Cities Airport

This is a developing story. Information may change as official details are released.

This article summarizes reporting by WSMV by Li Cohen, Kingsport Times News, and official statements from the Tri-Cities Airport Authority.

A massive sinkhole measuring 20 feet wide and 17 feet deep forced the immediate closure of the primary commercial runway at Tri-Cities Airports (TRI) in East Tennessee on June 9, 2026, disrupting airline operations. The subsurface void was discovered beneath Runway 5/23, prompting airport officials to halt traffic on the strip while engineering teams assess the structural integrity of the pavement.

Airport personnel initially identified a surface condition requiring evaluation on the runway on Tuesday. Subsequent investigation by the Tri-Cities Airport Authority revealed the extensive 20-by-20-by-17-foot void, leading to an extended closure through at least June 10, 2026, according to official airport updates.

Operational impact and airline response

Runway 5/23 serves as the primary long runway for commercial flights at the Blountville facility. Its sudden closure has shifted the burden of operational decisions to individual air carriers, who must evaluate their ability to operate at the airport under current conditions.

Tri-Cities Airport Authority President and CEO Gene Cossey stated that airlines will determine whether to delay or cancel their scheduled flights. According to reporting by Kingsport Times News, Cossey advised passengers to check directly with their respective airlines for status updates before traveling to the terminal.

While the primary commercial strip is out of service, the airport’s secondary runway, Runway 9/27, remains open for operations. However, the shift in runway availability has required dispatchers and flight crews to recalculate performance data to ensure safe operations on the alternate surface.

Infrastructure repairs and geological context

Repair efforts commenced immediately on the evening of June 9. The airport authority emphasized that safety remains the primary concern during the restoration process and that the runway will remain closed until repairs meet regulatory standards.

“The airport will work to fix this problem as quickly as possible, but we always ensure the safety of the traveling public is our primary concern, and we will ensure that the repairs are made as quickly as we can while also ensuring complete safety,” Cossey said, as reported by Kingsport Times News.

Sinkholes are a documented geological hazard in East Tennessee. The region is characterized by karst topography, which consists of highly soluble carbonate rocks that can dissolve and create underground voids over time.

Similar infrastructure challenges have affected other major aviation facilities recently. On May 20, 2026, a sinkhole discovered near Runway 4/22 at New York’s LaGuardia Airport (LGA) forced a runway closure and caused widespread flight disruptions, according to reporting by WBIR.

AirPro News analysis

We note that runway closures due to sudden geological subsidence present unique challenges for airport operators, particularly at regional facilities with limited runway redundancy. While TRI’s Runway 9/27 remains active, its dimensions and weight-bearing capacity may restrict certain commercial operations or require payload penalties compared to the primary Runway 5/23. The rapid identification of the 17-foot-deep void highlights the critical importance of routine daily runway inspections in preventing potential aircraft incidents during takeoff or landing rolls. The timeline for reopening Runway 5/23 will likely depend on the stability of the surrounding soil and the extent of the required fill and repaving work.

Sources: Tri-Cities Airport, WSMV, Kingsport Times News, WBIR