Metro Atlanta mayors and county commissioners of the 21-member Atlanta Regional Commission Roundtable finalized the TSPLOST project list Thursday.

The $6,140,172,377 in projects across a 10-county metro Atlanta area will go before voters in a referendum next year along with a 10-year 1 percent sales tax to fund it.

The list includes $984,089,900 for transportation projects in Cobb County, including $689 million for “enhanced premium transit service” Acworth/Kennesaw/Town Center to the MARTA Arts Center Station in Atlanta, $291,899,900 for roadway projects and $3.19 million for improvements to McCollum Airport.

Of the revenue collected by the tax, 85 percent, or $6,140,172,377, is to be used on the regional projects identified and agreed upon by the Atlanta Regional Roundtable.

The remaining 15% of the revenue collected will be distributed by the Local Assistance Road Program formula to counties and municipalities. This amount is $1,083,559,831.

Cobb commission chairman Tim Lee said the plan for the $689 million for “enhanced premium transit service” is to use $110 million for an upgraded Acworth-Midtown bus service, the Marietta Daily Journal reports. The remaining $579 million would go toward whatever transit the county’s “Alternative Analysis” transit study due in February 2013 recommends, MDJ says.

Holly Springs Mayor Tim Downing of Cherokee County, Douglasville Mayor Mickey Thompson and Fayetteville Mayor Ken Steele were absent from Thursday's Roundtable vote, MDJ says.