An update, southbound closure starts Feb 4, 2017. Based on a report I heard this morning, when construction on the southbound side completes, they will route northbound traffic to the southbound lanes (still no southbound travel).
FWIW, one of the things they are working on, a section of the roadway on the big bridge over the Rouge river fell out! There was a large hole and a number of vehicles hit it. I they are going to completely replace the roadbed on the bridge. While they are redoing the Rouge bridge, they are going to replace two other bridges farther south. The two long bridges are to be replace by four shorter bridges (lower cost to build and maintain).