Atlanta Perimeter

I-285 has a much greater impact than just that of an interstate or a by-pass, it is very much a fabric of everyday life in Metro Atlanta. Some of the worst traffic in the city resides here, property values fluctuate depening on which of I-285 side you are looking (and what part of town) and a telephone area code uses it as a boundary (inside I-285 is 90-95% devoted to the 404 area code). here are all the facts I could gather or found interesting on I-285...enjoy.

Vital Statistics:
Officially Finished October 15, 1969 (4 lanes)
Original Cost $90 million
62.5 Miles (currently 8-10 lanes)
45 Numbered Exits (48 Actual interchanges, 3 partial)
8 Interstate Interchanges, 3 other freeway interchanges
You do need a compass:

I-285 north..south,east, west ? it gets very confusing. The road should be labeled inner or outer loop/ring but thats too easy. Here's the directional guide to I-285..follow along with your maps.

East-West: On the Nortside it ranges from Chamblee-Tucker Road/I-85 exits 26-27 to Cobb Pkwy (US 41)/I-75 Exits 13-14. (Both are massive interchanges and the exits run together in the same network of ramps). On the southside it extends from the I85/I-285 transition (Exit 1) to I-20 on th east side (exit 35). looking at a map you can easily fill in the blanks for north & south as the road actually runs the correct way. This is all very confusing to folks who arent comfortable with the city and it's pure hell when giving directions.

Construction:

Construction began in early 1957, the first segements were in the northeast at the I-85 Jct. (the original bridge there was dated 1958) this segmenet also extended to the west across what is now referred to the "top end perimeter" to Peachtree-Dunwoody Rd. (original bridges were dated 1961)

The other segment being built at this time was on the southside near the airport, from Clark Howell Hwy to the eventual Airport Connector (I-85). Both these segmenst were open in the early 60's

The next wave was from I-285 on the top end west to US 41, finished by 1964 and on the southside heading east to Jonesboro Road (Exit 40)

The next segments to open were natural extentions...on the southeast side, east to exit 35 (I-20) and on the west side, from the airport connector west where I285 and I-85 are multiplexed for about 1.5 Miles, then north to I-20 on the west side. Both sections opened in 1967.

The road was completed in 1969 as connections from I-20 to I-75 on the west and to I-85 on the east were done.

Reconstruction:

Within 9 years of it's completion, I-285 was in need of major upgrades. Atlanta was booming faster than anyone expected and the entire freeway system was deemed obsolete. I-285 was the first project in the massive $1.3 Billion "Freeing the Freeways" campaign. The Northern arc from I-75 to I-85 was widened to 8 lanes first, with the south end of I-285 near the airport being widened to 10 lanes finished the project in 1989. Along with the extra lanes, all interstate interchanges were upgraded, some more than others.

Interstate & Major Interchanges:

This is what really helps put the road in the big leagues with other 3di's (along with it's traffic volume) The major interchanges are just that! Major structures that will quicken the heartbeat of those who love freeways and those who are scared to death of them.

Originally I-285/I85 in the northeast was a basic cloverleaf, I-285/I-85 at the airport was a trumpet and the other interchanges (I-20, I-75, I-85 Transition, Ga 400, US 78) were all the typical early-mid 60's wide-split roadways with many left exits and enterance ramps (dint that engineer used to work in Connecticut?) More impressive than a cloverleaf but that isnt saying much.

During reconstruction here's what happened:

I-285/I-85 Transition-Exit 1 In the SW corner, this was upgraded big time with a collector-Distributor network to make multiplexing less confusing. Also the presence of GA Spur 14 added to the mass. One of the biggest interchanges area-wise in the southeast (if not the biggest) also has a Calif. style 70 foot 3 lane sweeping fly-over for good measure (carries I-285 south to east)

I-285/I-85 Airport Connector-Exit 44 originally a trumpet...now a deluxe trumpet with the collector/distributor lanes involved and a few long flyovers to boot.

I285/I-85 Norteast-Exit 26 (Tom Moreland interchange - aka Spaghetti Junction) A personal favorite as I watched it rise from the antiquated cloverleaf over 6 years and $86 Million. Has 14 bridges, some as high as 90 feet above I-85. Technically looks more like a spread out stack than anything and when you incorporae the near-by exits and frontage roads you get...well Spaghetti! Possibly the most impressive interchange on the east coast- with a classic west coast look. This interchange handles roughly 300,000 cars a day split close to even on both roads.

I-285/I-20 East Exit 35..West Exit 7 Niether has been drastically upgraded from it's original design except for a few extra ramps, lanes or shifts here and there. Both still incorporate left exits and entrances and probably the least used interstate interchanges on I-285.

I-285/I-75 North Exit 14...South Exit 42 Same as I-20 wher the original designs have been incorporated in to the upgrade but the upgrades are major. On both, 6 lane roadways have been built through the wide medians while the original roads have become collector ditributor ramps (still exiting on the left in places). The interchange on the northside is most impressive due to the nearby exits and rugged terrain. I-75 S to I-285 E is made up of a long 90-100 foot high fly-over and the volume of traffic in that area requires some collector distributor ramps to be a wide as 4 lanes going one way. The interchange is getting some upgrades as we speak due to the new Kennedy parkway being built 1/2 Mile to the south.

I-285/I-675 Exit 38 (Mid 80's) Kind of a cross between a trumpet and a half- stack. I-675 ends at I-285 but it's exit ramps to the west also serve exit 39.

I-285/Lakewood Fwy - Exit 4 a 3/4 cloverleaf with a small fly over ramp..no changes from it's original mid 60's design

I-285/Stone Mountian Fwy - Exit 30 Same as I-20, a few upgrades over the years. Transition with US 29 at Exit 29 was last major work finished in 1996.

I-285/GA 400 - Exit 19 Still in it's original 1969 design (built after that part of I-285 was finished) and woefully inadequate. Plans are on the board for a major LA style upgrade. Factor in the proposed collector-distributor lanes on 400 and the fact the overall area is heavily congested and you get the idea that this could be HUGE!

Control Cities:

Unlike I-495 around Boston & I-695 around Baltimore, I-285 uses no local cities as control cities..the closest one is 80 miles away. I-285's control cities are that of it's interstecting interstate...here is the list.

More Interesting facts about I-285 The Future ?

In 1989 the GA DOT proposed a $1.2 Billion commuter lane project for I-285. The project would have added 4 lanes total to I-285 yet they would have had their own exits and enterances. the lanes would have run from US 41 on the NW side (Exit 13) to Lavista Road on the east (Exit 28). I have not heard anymore about this sense but it sure seems like a good idea. In fact it ought to be extended south to Memorial Drive (Exit 32). The northern arc was just widened to 10 lanes in 1996 and aside from the GA 400 interchange upgrade I dont know of any other plans to improve I-285. oh theres always wild talk about putting a rapid-rail line aside of I-285 but I doubt that will ever happen...the GA DOT likes roads too much.

The proposed Outer Perimeter (GA 500) would take alot of the truck presence off I-285 but thats very iffy right now as the environmentalists seem to be winning that battle.


Sources
  • AJC Article "the road we love to hate" March 1995
  • Atlanta business chronicle 12/18/89
  • Numerous other articles, maps and personal experiences.

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