Interstate 475 (unsigned Georgia State Route 408) is a six-lane bypass for I-75 to the west of Macon in central Georgia. The freeway provides long distance travelers between Atlanta and Florida with a bypass of the in-city route of Interstate 75 through Macon. As such, a rest area lines the northbound lanes ahead of Exit 9.
The concept of Interstate 475 emerged from the shift of I-75 from a path west of Macon to a route through the city at the urging of local officials. I-475 was completed in 1967, allowing through traffic along Interstate 75 a seamless route between Atlanta and Valdosta, as construction on I-75 through Macon continued until 1971.1
The Macon bypass was expanded from four to six lanes between 1998 and 2002. An $83.4-million project rebuilt the south wye interchange between I-75/475 to both incorporate new collector distributor roads along I-75 between I-475 and Hartley Bridge Road and widen 3.7 miles of freeway. The contract was awarded in August 2006 and work was completed in October 2009.2