July 16, 2006: Junction of IA 100 (Collins Road) and Business US 151 (1st Avenue) in northeast Cedar Rapids. This was the end of IA 100 in 1984-96, and before then, IA 150 turned left here in a wrong-way multiplex with US 151 — it was going south while 151 was going north on a road running northeastward.
This ends the easy part of the number sequence. From this point forward, I won’t hesitate to use dates already used, nor will I make photos from previously used intersections ineligible.