R.I. Gen. Laws § 24-7-8: Sidewalks along state highways.

Nothing in this chapter shall be held to oust the state of jurisdiction over any such sidewalks and curbing as may be made, laid, or constructed upon state highways within a town, but no sidewalks or curbing on state highways shall be made, laid, or constructed without the approval of the director of transportation first being had and obtained as to the feasibility, location, type, and time of construction.