Notwithstanding § 31-24-3, if at the time of the construction, improvement, or repair of any public highway the abutting owner has more than one farm entrance to the highway, which entrance has been in reasonably constant use for more than two years prior to the new construction the owner shall be furnished a like number of entrances by the authority having charge of the construction, improvement, or repair, if the entrances do not materially add to the hazard of public travel on the highway. However, no owner of property adjoining the highway is entitled to more than two such entrances at the expense of the authority charged with the maintenance of the highway, on any one continuous half mile of adjoining property.
SDCL 31-24-4