The Georgia Department of Transportation (GDOT), which controls the bridge (because it is a state highway), plans to close the bridge to traffic while it is being replaced. GDOT explained that this approach has the advantages of least cost and shortest project time.
The latest schedule with a brief explanation of the project can be found here.
The last Open House on this project was held Tuesday March 13, 2018. You can read more here.
Historical commentary is available in GDOT’s “Responses to Open house Comments” dated September 9, 2016; this is GDOT’s response to public input gathered at the Public Information Open House held on March 1, 2016.