The Department of Transportation and municipalities shall install ramps, where feasible, 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 handicapped 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.
53 P.S. § 1898