Minn. Stat. § 163.02
County highways shall be established, located, relocated, constructed, reconstructed, improved, maintained, revoked, or vacated by the several counties. The several county boards shall have general supervision over county highways, including those highways other than cartways within their respective counties established by judicial authority, and they may appropriate and expend sums of money from their respective county road and bridge funds as they deem necessary for the establishment, location, construction, reconstruction, improvement and maintenance, or vacation of such highways.
They may acquire by purchase, gift, or eminent domain proceedings as provided by law, all necessary right-of-way for such highways, purchase all necessary road material, machinery, tools, and supplies needed therefor; and may construct buildings or rent, or acquire by purchase, gift, or eminent domain proceedings, grounds and buildings necessary for the storing and housing of such material, machinery, tools, and supplies.
The county board, or the county engineer if so authorized by the board, may impose weight and load restrictions on any highway under its jurisdiction.
Minn. Stat. § 163.02
1959 c 500 art 4 s 2