May 16, 2017: This curve at the west end of old IA 363 is going away.
On Tuesday, following the Memorial Day weekend, part of IA 150 will be closed to build a roundabout at the Urbana corner, according to this DOT press release. I covered the plan in a post in 2020.
There has been a curve at this location since IA 101 (now 150) was graded in the late 1920s.