Interstate 285 (Georgia)

Interstate 285 marker
Interstate 285
The Perimeter
Map
I-285 highlighted in red
Route information
Auxiliary route of I-85
Maintained by GDOT
Length63.98 mi[1] (102.97 km)
Existed1963[2]–present
NHSEntire route
Major junctions
Beltway around Atlanta
Major intersections
Location
CountryUnited States
StateGeorgia
CountiesFulton, Cobb, DeKalb, Clayton
Highway system
  • Georgia State Highway System
SR 284 SR 285
SR 406SR 407 SR 408

Interstate 285 (I-285) is an auxiliary Interstate Highway encircling Atlanta, Georgia, for 63.98 miles (102.97 km).[1] It connects the three major Interstate Highways to Atlanta: I-20, I-75, and I-85. Colloquially referred to as the Perimeter, it also carries unsigned State Route 407 (SR 407) and is signed as Atlanta Bypass on I-20, I-75, and I-85.

Because of suburban sprawl, it is estimated that more than two million people use the highway each day, making it one of the busiest Interstates in the Atlanta metropolitan area, and one of the most heavily traveled roadways in the US. During rush hour, portions of the highway slow, sometimes to a crawl.

  1. ^ a b Starks, Edward (January 27, 2022). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved August 28, 2022.
  2. ^ State Highway Department of Georgia (1963). State Highway System and Other Principal Connecting Roads (PDF) (Map). Scale not given. Atlanta: State Highway Department of Georgia. OCLC 5673161. Retrieved February 11, 2017. (Corrected to June 1, 1963.)