So I designed something that should alleviate the intersection of Springfield and Benvoulin, namely the huge number of left turns onto Benvoulin. Not only did I make it a dual left turn lane, I also designed it in a way that allows the left turn staging area to load up when Springfield has a red light then allow the left turn onto Benvoulin happen concurrent to the straight green light signal at Springfield. This would improve the flow of Springfield going straight through eastbound which often has a very short green light signal as a result of the left turn and traffic is often backed up to Cooper in the PM rush.
Turning right from Springfield to Benvoulin southbound has an extended merge lane with barriers to avoid conflicts with drivers turning left, there is an extended merge lane onto Springfield because of the high number of drivers making that movement (I should've extended the right turn staging lane from the south), and the turn from and onto Benvoulin on the north follows the new right turn island design designed for safer pedestrian crossings and reduced collisions with vehicles going straight through. I wonder if I should've eliminated the islands completely?