The plan for construction of an I-380 exit at Forevergreen Road in North Liberty is out. It includes upgrading I-380 to six lanes under Forevergreen but narrowing to two to the north. South of there, I-380 will be six-laned as part of an expected multi-part upgrade of the I-80 interchange. (As with I-35 in Ankeny, this is long overdue, and six-laning I-380 all the way up to US 30 should be added to the state’s priorities list IMO.)
I believe this is the first exit added to I-380 since its original construction.