Interstate 475 (Georgia)

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Interstate 475 marker

Interstate 475
Larry Justice Highway
Route information
Maintained by GDOT
Length: 15.83 mi[3] (25.48 km)
Existed: 1967[1][2] – present
Major junctions
South end: I‑75 near Macon

US 80 / SR 22 near Macon

US 41 / SR 19 near Bolingbroke
North end: I‑75 near Bolingbroke
Highway system
  • Georgia State Routes
I‑420 I‑485
SR 407 Georgia 408.svg SR 409

Interstate 475 (I-475) is a 15.83-mile-long (25.48 km) auxiliary Interstate highway in Georgia, splitting off from I-75 and bypassing Macon. It is also unsigned State Route 408 (SR 408). This is the preferred route for through traffic, as I-75 enters downtown Macon and reduces to four lanes (two in either direction; undergoing widening), and has a 60-mile-per-hour (97 km/h) speed limit, in addition to the highway interchange with I-16.

Route description[edit]

I-75 northbound sign at Hartley Bridge Road for I-475 north in Macon

I-475 carries six lanes (three in each direction) throughout its entire route (expanding to eight lanes at both junctions with I-75), except at its northernmost terminus with I-75, where it briefly reduces to four lanes.

The road has also been equipped with traffic cameras, which are a part of the Georgia Navigator system that has been extended via fiber optics all the way from metro Atlanta, nearly 100 miles (160 km) to the north-northwest.[4]


Macon, Georgia 1955 Yellow Book with I-475 route as the bypass

Built in stages between 1965 and 1967, I-475 was originally built with two lanes in each direction, and a wide median with forest, mostly of sweetgum trees. When the one lane was added in each direction, every bit of the median was paved, with a full-lane-wide shoulder in both directions instead of the normal very narrow ones, and a Jersey barrier, rather than leaving or replanting any trees or other landscaping or native vegetation.

In 1965, the entire length of the highway was under construction.[1] In 1987, the entire highway opened. At the time I-75 going into Macon was not yet complete.[1][2]

The Bibb County Commission named the highway in honor of former Commission Chairman Larry Justice, who retired in 2000.[5]

Exit list[edit]

County Location mi km Old exit New exit Destinations Notes
Bibb 0 0.0 I‑75 south (SR 401) – Valdosta Southern terminus; southbound exit and northbound entrance; I-75 exit 156
Macon 0.4 0.64 1 Hartley Bridge Road Added exit in 2009 with new collector–distributor lanes; exit 155 on I-75 southbound, collector–distributor Lanes from Hartley Bridge Road entrance going northbound to I-475 and I-75
3.9 6.3 1 3 US 80 / SR 22 (Eisenhower Parkway) – Macon, Roberta
5.6 9.0 2 5 SR 74 (Thomaston Road, Mercer University Drive) – Macon, Thomaston
9.4 15.1 3 9 Zebulon Road To US 41/SR 19
Monroe 15.1 24.3 4 15 US 41 / SR 19 (Rivoli Road) – Bolingbroke
15.83 25.48 I‑75 north – Atlanta Northern terminus; northbound exit and southbound entrance; I-75 exit 177
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


  1. ^ a b c State Highway Department of Georgia (January 1966). Official Highway Map (PDF) (Map). Scale not given. Atlanta: State Highway Department of Georgia. Retrieved December 27, 2016. 
  2. ^ a b State Highway Department of Georgia (January 1967). Official Highway Map (PDF) (Map). Scale not given. Atlanta: State Highway Department of Georgia. Retrieved December 27, 2016. 
  3. ^ "Route Log - Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 2". Federal Highway Administration. Retrieved 5 October 2014. 
  4. ^ "13 WMAZ traffic cams:"
  5. ^ Stucka, Mike (August 14, 2012). "Larry Justice, former Bibb County commission chairman, dead at 74". The Telegraph. Macon, GA. 

External links[edit]

Route map: Google

KML is from Wikidata