Wyo. Stat. § 24-6-103
The highway authorities of the state, counties, cities, towns, and villages, acting alone or in cooperation with each other or with any federal, state, or local agency of any other state having authority to participate in the construction and maintenance of highways, are hereby authorized to plan, designate, establish, regulate, vacate, alter, improve, maintain, and provide access facilities for public use wherever such authority or authorities are of the opinion that traffic conditions, present or future, will justify such special facilities; provided, that within cities, towns and villages such authority shall be subject to such municipal consent as may be provided by law. Said highway authorities of the state, counties, cities, villages, and towns, in addition to the specific powers granted in this act, shall also have and may exercise, relative to access facilities, any and all additional authority now or hereafter vested in them relative to highways or streets within their respective jurisdictions. Said units may regulate, restrict, or prohibit the use of such access facilities by the various classes of vehicles or traffic in a manner consistent with W.S. 24-6-102.
W.S. 24-6-103