Unless the context clearly indicates otherwise the following words shall have the meanings herein ascribed to them wherever they appear in chapter 68 of the Kansas Statutes Annotated, and acts amendatory thereof or supplemental thereto:
For the purposes of this chapter, a concrete overflow bridge or ford forty (40) feet or more in length shall be considered a bridge, and may be constructed and maintained in accordance with the laws relating to the construction and maintenance of bridges; and any concrete overflow bridge or for less than forty (40) feet in length shall be considered a culvert and may be constructed and maintained in the manner provided by law for the construction and maintenance of culverts.
K.S.A. 68-1101