The first one here would be at the overpass between the river and the IL 3 interchange. It is currently dormant, but in the long term I'm not sure it's completely dead:
http://www.mocountyillinois.com/images/PDFs/Columbia%20Crossing%20Site%20Plan.pdf (http://www.mocountyillinois.com/images/PDFs/Columbia%20Crossing%20Site%20Plan.pdf)
The second interchange, or some version of it, is still planned to be built in 2012-2016 time frame:
http://www.mocountyillinois.com/images/PDFs/Dupo%20Interchange.pdf (http://www.mocountyillinois.com/images/PDFs/Dupo%20Interchange.pdf)
I'm not sure the design is the same as shown; a SPUI seems awful fancy for this area.
the one I'm aware of is the one with Davis Street Ferry Road
http://www.ibjonline.com/dupo_clayco_annexation_access.html