I-459 is the proposed and recommended alternative route to avoid the Central Business District closure.
Traffic from I-59/20 westbound (from Atlanta/Gadsden) will be detoured to exit at 25th Street. or at Carraway Boulevard and continue Carraway/US 31 north to Finley Boulevard/ Al 378, and take Finley Boulevard around the city, either to I-65 at the Finley exit 262 or to get on I-59/20 at the Arkadelphia Road, exit 123.
Westbound traffic headed downtown can take the 25th Street exit 126A, or exit onto the Red Mountain Expressway. These exits are expected to remain open throughout most of the project.