Atlanta: I-20 and I-75 / I-85 #2
18" x 18"
In Downtown Atlanta, the main hub of vehicular energy happens at the interchange of I-20 and the Downtown Connector (the overlapping I-75 and I-85). Wikipedia calls this spot a "pile-up intersection".
Atlanta: I-20 and I-75 / I-85 #1
18" x 18"
