Minn. Stat. § 344.13

When unenclosed lands are afterwards enclosed, the owner or occupant of the lands shall pay one-half of the value of each partition fence extending upon the line between that person's land and the enclosure of any other owner or occupant. If the parties do not agree, the value must be ascertained by the fence viewers and stated in writing. If an owner or occupant fails to pay within 60 days after the value is ascertained and a demand made, the owner of the fence may recover the value and the cost of ascertaining it in a civil action.