The Southern California Regional Airport Authority, the entity revived by Mayor Antonio Villaraigosa in 2006 to promote regionalization of L.A.’s air traffic, is no more.

The group, meeting for just the second time in the past ten months, voted Thursday to disband itself amid waning interest from representatives of Riverside and Orange counties who don’t want to see additional traffic at their local airports.

Los Angeles International Airport handles the vast majority of Southern California’s air traffic and officials have been trying for more than two decades to distribute it throughout the region.

L.A. City Councilman Bill Rosendahl, who served as chairman of the authority, suggested that a new panel may be formed that would promote alternative ground transportation projects, such as high-speed rail.