Minn. Stat. § 471.464: RAMPS AT CROSSWALKS.

Subdivision 1. At new installations.

Every city shall install ramps at crosswalks, in both business and residential areas, when making new installations of sidewalks and curbs or gutters, or improving or replacing existing sidewalks and curbs or gutters, so as to make the transition from street to sidewalk easily negotiable for disabled persons in wheelchairs and for other persons who may have difficulty in making the required step up or down from curb level to street level.

Subd. 2. Design specifications.

All such ramps shall be constructed or installed in accordance with design specifications therefor prepared by the Department of Transportation. The Department of Transportation shall make available to such municipalities design standards for such ramps.