306A.6  New and existing facilities — grade-crossing eliminations.
  Cities and highway authorities having jurisdiction and control over the highways of the state, as provided by chapter 306 may designate and establish an existing street or highway as included within a controlled-access facility. The state or any of its subdivisions shall have authority to provide for the elimination of intersections at grade of controlled-access facilities with existing state and county roads, and city or village streets, by grade separation or service road, or by closing off such roads and streets at the right-of-way boundary line of such controlled-access facility, the provisions of sections 306.11 to 306.17 shall apply and govern the procedure for the closing of such road or street and the method of ascertaining damages sustained by any person as a consequence of such closing, provided, however, that the highway authority desiring the closing of such road or street shall conduct the hearing and carry out the procedure therefor and pay any damages, including any allowed on appeal, as a consequence thereof, any law to the contrary notwithstanding, and after the establishment of any controlled-access facility, no highway or street which is not part of said facility shall intersect the same at grade. No city or village street, county or state highway, or other public way shall be opened into or connected with any such controlled-access facility without the consent and previous approval of the highway authority in the state, county, city or village having jurisdiction over such controlled-access facility. Such consent and approval shall be given only if the public interest shall be served thereby.
[C58, 62, 66, 71, 73, 75, 77, 79, 81, §306A.6]