The Iowa DOT says in a press release that the southbound ramps on I-380 to/from Boyson Road close starting today and lasting until July 4. Center Point Road will be used for the connection.
This KCRG story from Sept. 29, 2022, outlines the proposal to convert the Boyson Road exit to a diverging diamond. There’s also a video that shows the interchange format, where the directions of traffic temporarily switch so drivers are on the opposite side of the road. The now-open Tower Terrace exit and the future Cedar Rapids airport exit also are designed as DDIs.
If you’ve been in the area you have already seen that all the trees are gone and part of the new bridge over I-380 is being built right beside the current one.