After a few years of construction, the US 89 expressway has now been improved to the point where there is full access control all the way from I-15 to I-84. As part of that, the interchanges at 400 North in Kaysville and Gordon Avenue in Layton are completed and will presumably require TM waypoints. Antelope Drive is getting a new interchange as well, but that likely won't be complete for another year or so.
Presumably, all four new interchanges (400 North, Oak Hills Dr/UT 109, Gordon Ave, and Antelope Dr) will receive exit numbers when the whole project is done. OSM has exit numbers on them already, but this is wrong and I have no idea whether it came from a real source or not - when I drove up there a few weeks ago, there was only temporary construction signage with no exit numbers to be found.
