GDOT gets ready to start final two phases of I-16/75 interchange project this summer Crews will also be turning a Dooly County intersection at Ga 215 and 257 into a four-way stop Author: Pepper Baker Updated: 7:17 AM EDT April 27, 2021 DOOLY COUNTY, Ga. — It's Work Zone Safety Week, and the Georgia Department of Transportation wants to remind you to drive safely through construction sites on the roads. Their crews are continuing work on Phases Two and Three of the interchange project. This summer, they'll begin work on the final two phases. "We do have a period of time, pretty much from summer through the end of this year, but we will have five phases going concurrently," said Penny Brooks with the Georgia Department of Transportation.