Route: Hartsfield-Jackson Atlanta Int'l was considered because they built a fifth runway that passes over part of I-285. The underground passage way was determined not to be a tunnel, and research was done to prepare for worse case feasible spill of gas
All Hazmats

Route: State 400 [Atlanta area] [Noted by Georgia Public Service Commission: "A ban on a portion of 400 due to a tunnel", but does include specific sections and routes of ban.]
Restricted Route, All Hazmats