How many minute drive is it from the Atlanta Airport to 3020 Mansell Road in Alpharetta, Atlanta?

About 45 minutes to an hour. But it really depends on traffic, road work etc. Take I75/85 north stay on 85N then get on 400N to mansell.

from the Hartsfield-Jackson Atlanta International Airport (ATL): 404-209-1700
6000 N Terminal Pkwy # 435, Atlanta, GA 30320, US it is a 38 minute drive, 32.7 miles.
if that is not the right airport, try going to mapquest.com

I've done it in 40 minutes, but if there is normal traffic plan for an hour and a half.

Honestly.... it takes 35 minutes to get to 85 from 400 . then from 85 it takes about 20-30 minutes. This is w.o traffic. The best time of day is like 10:00a.m... theres not much traffic.2:00 during the day... or..at 8:00p.m. and later