Work on a South Main Street-Ryon Avenue roundabout could start soon, and is expected to be finished in about a year, Hinesville City Council members learned. City engineer Paul Simonton detailed the work to be done on the roundabout at the council’s June 5 meeting, and a contract of $1.14 million was awarded to Curb and Gutter Professionals, a Jesup firm, to put in the roundabout.