The Iowa DOT’s PIM site has put online the giant posters that were at an informational meeting last week. The file is a VERY large PDF.
Everything through 2020 is laid out, but that includes nothing north of Middle Road or south of the Avenue of the Cities, which would be done some time beyond that.
In the plan, the new northbound/westbound/Iowa-bound side bridge will open around Thanksgiving 2019 and be used for the winter of 2019-20. The other existing bridge would still be active. In the 2020 construction season, the new bridge would serve both directions and the last task of the old, Illinois-bound bridge would be purely as a long on-ramp from downtown Bettendorf across the river. Both new bridges should be open to four lanes of traffic at the end of that year.