The second of two intersections on US 30 between the United school and the IA 17 interchange will be converted to a right-in-right-out intersection within a year. The meeting was in April. The diagram is here.
The intersection with T Avenue, which goes north to meet IA 17 at the latter’s now-relocated east-west jog, has already been turned into right-in-right-out for westbound traffic, eliminating eastbound left turns. Now the intersection with 230th Street, which goes west to IA 17 before 30 curves northward, will have its median removed. Then only eastbound traffic will be able to turn there.
I could see a case for full closures at both intersections, but that wouldn’t eliminate the most important one on that stretch of 30. That’s a mile east at U Avenue, which is the access for both United school and the ISU Agricultural Engineering and Agronomy Research Farms. It wouldn’t be impossible to create a bridge/frontage road system to make the stretch of 30 between the IA 17 and Lincoln Way exits into controlled-access, just expensive. It would be slightly less work than what’s going on between Ames and Nevada, and we know how complicated that has been.