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Old 08-05-2017, 11:01 AM
Location: SC
8,382 posts, read 5,027,225 times
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Is Atlanta subject to many earthquakes?
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Old 08-05-2017, 02:15 PM
Status: "Ready for Fall" (set 22 days ago)
Location: Atlanta
4,645 posts, read 3,015,634 times
Reputation: 3862
Originally Posted by blktoptrvl View Post
Is Atlanta subject to many earthquakes?
Not of any consequence. We get an occasional aftershock that hardly anyone feels.

And there is no way Spaghetti Junction is 300 feet tall as the OP posted, that's the height of a 25 to 30 story building. The tallest ramp is more like 175 feet.
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Old 08-05-2017, 04:52 PM
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From what I understand, the type of transportation infrastructure in question (freeway overpasses and flyover bridges like the type being inquired about within the I-85/I-285 Northeast Tom Moreland Interchange a.k.a. "Spaghetti Junction") has a life of about roughly 30-50 years....A 30-50 year lifespan seems to be pretty standard for most superhighway infrastructure.

With the interchange being completed about 30 years ago (back in 1987), we will be entering a 20-25 year period where the bridges and flyover ramps for the I-85/I-285 NE interchange will need to be replaced sometime probably before 2040.

Preferably a transportation agency like GDOT (the Georgia Department of Transportation) would like to replace those bridges and overpasses and flyover ramps earlier within the back 20 years of that 30-50 year infrastructure lifespan. But with ongoing funding restraints the replacement of those bridges likely would have to come noticeably later within the back 20 years of that 30-50 year infrastructure lifespan than might be preferred.

But generally, I think that those bridges and overpasses that were built in the '80's reconstruction of the I-85/I-285 NE interchange (which occurred between 1983 and 1987 as a key part of the larger 1980's "Freeing-the-Freeways" reconstruction and expansion of the Atlanta metro freeway system) could be used until about as late as 2037-2040 if necessary....Though all of those overpasses, bridges and flyover ramps in that I-85/I-285 Spaghetti Junction interchange will most likely definitely need to replaced by 2040.
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