U.S. Rep. Robin Kelly (D-Ill.) speaks at a news conference at Governors State University alongside Illinois lawmakers and local officials. [Ben Szalinski/The Daily Line] 

Beginning in January, the Illinois Department of Transportation (IDOT) will begin seeking proposals from private developers to build the South Suburban Airport in Peotone after decades of conversations on a third Chicago airport.  

Supporters of the airport believe there is sufficient interest in both building and using the planned cargo-oriented airport.