Interstate 475 (Georgia)

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This article is about the bypass of Macon, Georgia. For the cancelled Interstate 475 in Atlanta, see Interstate 675 (Georgia).

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]


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.[5][1] The next year, the entire highway was open.[1][2]

The Bibb County Commission named the highway in honor of former Commission Chairman Larry Justice, who retired in 2000.[6]

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. ^ No map defined for this year.
  6. ^ Stucka, Mike (August 14, 2012). "Larry Justice, former Bibb County commission chairman, dead at 74". The Telegraph. Macon, GA. 

External links[edit]

Route map: Bing / Google

KML is from Wikidata