Who owns the property in an cloverleaf interchange on an interstate highway in MI?

The state, with a few exceptions where the property is accessible by access roads. Occasionally, the cloverleaf is large enough to encompass some private property.

Which means you can't claim a right to be there, anymore than you can claim a right to be a pedestrian on the right of way of the interstate. The same rules apply.

The State of Michigan

The state, of course.