County roads; detachment from county road system.

Whenever a county road has been designated and established as provided by sections 39-2001 to 39-2003, the county board may detach the same, or any part thereof, from the county road system, and cause the same to revert back as a township road. The county board shall no longer be obliged to maintain the same and the maintenance and improvement of the road shall thereafter devolve upon the township.