In the development of any limited access facility, the agency may plan, designate, establish, use, regulate, alter, improve, maintain, and vacate local service highways or designate as local service highways, any existing highway, and may exercise jurisdiction over local service highways in the same manner as over limited access facilities if the local service highways are necessary or desirable. The local service highways shall be separated from the limited access facility. (Added 1985, No. 269 (Adj. Sess.), § 1; amended 1989, No. 246 (Adj. Sess.), § 17.)