CTA responds to South Loop growth, opens south entrance to Harrison station
Dubster first tipped me off to construction there. Then he sent me this photo of a construction notice.
So I asked my CTA contact about it. She confirmed that the entrance will be at the southwest side of the intersection of Polk and State. There are many new residential buildings in the area, and a new highrise is going up less than a block away from there.
Look here for an official CTA announcement shortly.