The construction of public road approaches, drainage structures for the reconstruction of definitely existing private entrances, and the drainage necessary for the protection of a state highway shall be included as a part of the improvement of the highway. Upon the completion of the highway, the owners or occupants of adjoining lands shall construct and keep in repair all private approaches or driveways from the highways, but no approaches or driveways shall be constructed in a manner as to obstruct or interfere with the highways or with a drain or ditch that has been constructed as a part of the highway.
IC 8-23-9-49