From what I can see, crews have 6 pilings/caisson in on the west side of the Metra tracks and are preparing to do some sort of work directly east on the other side of Metra track bed. I doubt this is the beginning of a large structure (school or building) as most likely those structures would go (dig) down prior to drilling caisson. Could this be a ped-way? Totally confused by what I am seeing.
The work on both sides of the Metra tracks at Ninth Street is ComEd putting in a new underground 245,000 volt transmission line. It will run north under State Street from 55th, and then west under Ninth Street to the big substation across the river.