(1) In connection with the development of any controlled-access facility, the highway authorities of the state, county, city or town are authorized to plan, designate, establish, use, regulate, alter, improve, maintain, and vacate local service roads and streets or to designate as local service roads and streets any existing road or street, and to exercise jurisdiction over service roads in the same manner as is authorized over controlled-access facilities under the terms of this chapter, if in their opinion the local service roads and streets are necessary or desirable.
(2) The local service roads or streets shall be of appropriate design, and shall be separated from the controlled-access facility proper by means of all devices designated as necessary or desirable by the proper authority.