From the Peoria Journal-Star
http://www.pjstar.com/news/x1456178816/Route-24-Route-29-will-be-diverted-out-of-Downtown-Peoria (http://www.pjstar.com/news/x1456178816/Route-24-Route-29-will-be-diverted-out-of-Downtown-Peoria)
U.S. 24 will now cross the Illinois River south of downtown with I-474.
IL 29 will cross the river with I-74.
Plus, now a 5-way multi-plex in East Peoria with U.S. 24/150 IL 8/29/116 for a streach.
You're not missing much by bypassing "downtown".
Interesting how some states (Missouri) submit every little curve straightening project to AASHTO (their spring 2012 submission is a bloody four-laning in the same right-of-way) and others (Illinois) don't bother sending in actual reroutings.