Great trail, in very good and improved, since we first rode it last September, condition (short gravel portion are now paved; the pass under Indianapolis Blvd and Grand has been completed).
Will ride it tomorrow again full length.
From the north terminus in Hammond to the underpass under I80/I94 the path has a lot of ruts and makes a lot of turns. South of I80/I94, the path is in much better shape and it straightens out. Once you are south of Highland, the number of streetcrossings decrease as well and you can pick up some serious speed all the way to the south terminus in Crown Point.
As of today, Google Maps give incorrect instructions for crossing Indianapolis Blvd in Highland. As Serge mentions the underpass is complete, and the detour using Lincoln Ave, as suggested by Google Maps is no longer needed.
The overpass is open for traffic. We took it on the ride to Merrillville June 28th. Very nice.