Vt. Stat. tit. 23 § 1397a
The legislative body of a municipality where a covered bridge is located or, if parts of such a bridge are located in more than one municipality, the legislative bodies of the municipalities where a covered bridge is located acting jointly may, after consultation with the Agency of Transportation, restrict the use of the bridge to vehicles that are within limits as to one or more of the following, as they shall establish: weight, height, or width. Any limitation shall be permanently posted by the municipality, with signs that conform to the standards established by section 1025 of this title, approximately 100 feet from the approaches to the bridge and at intersections as may be required to enable operators of restricted vehicles to proceed by the most direct alternate unrestricted route.
23 V.S.A. § 1397a