(a) The district, at its own expense, may build necessary bridges and culverts across or under any railroad tracks or roadways of any railroad or any interurban, or street railway to enable the district to construct and maintain any canal, lateral, ditch, or other improvement of the district.
(b) Before the district builds a bridge or culvert, the board shall deliver written notice to the local agent, superintendent, roadmaster, or owner. The railroad company or its owner shall have 60 days in which to build the bridge at its own expense and according to its own plans.

(c) The canal, culvert, ditch, or structure shall be constructed of sufficient size and proper plan to serve the purpose for which it is intended.