About 10 days ago the Iowa DOT held a meeting in Council Bluffs covering the upcoming construction for the decade-plus-long reconstruction and expansion of I-29 and I-80 there. The step-by-step meeting with some videos starts here; a PDF is here. On the ground for drivers, 2016 is going to be mostly about the I-29/IA 92 interchange.
The first step in rebuilding the I-29/480 interchange was made, with two design concepts released. One would turn 37th Street into a frontage road (or be right beside it) for NB 29. Both close the northbound-only exit/entrance at 35th Street. Either Avenue G or 9th Avenue, but not both, would have a direct interchange with I-29 but would be incorporated into a larger ramp system. Also, NB 29 to WB 480 would be a right exit, not left as it currently is. (Story: Council Bluffs Nonpareil)
There’s a potential Easter egg of sorts in the sample signage for the dual divided freeway — which is still half a decade away. The BGSs in 2021 show South Expressway but not a sign for IA 192, possibly indicating that route will be decommissioned when the overall interstate project is completed. (First, though, it could be rerouted to cover Kanesville Boulevard since the state is getting rid of Broadway and North 16th.)
The Council Bluffs Interstate website also has a report covering the progress made in 2015 (it’s unnecessarily animated when it could’ve appeared as a PDF, but whatever).