The 159 construction through Collinsville is pretty much a nightmare right now. Sure, someday this mess will end, but right now and for the past months, it's been ugly. Especially if you live or have a business along there.
It does appear as though IDOT could sync the stoplight at Wickliffe. The road now has cement dividers which leave little room to pass traffic going in the other direction and they make it really hard to turn in or out of side streets or stores. But the light is set so that traffic backs up from the stoplight all the way to Main St going north and almost to Shop N Save going south. This is because both directions get their own signal. Since the east road (Wickliffe) is shut off and Keeble to the west is closed, it seems to me the north and south traffic would move smoother if they had green at the same time.
It's a mess and I still don't believe they needed to expand this road to get traffic moving quickly from Edwardsville to St. Clair Square.