(a) In this section, "structure" includes a bridge, viaduct, overheadway, footbridge, or wire.
(b) The bottom of the lowest sill, girder, or crossbeam or the lowest downward projection of a structure built by the state, a county or municipality, or a railroad company or other corporation, firm, partnership, or individual over the tracks of a railway or railroad shall be placed at least 22 feet above the top of the rails of the tracks.
(c) A roof projection built from a loading platform along a railroad main track, siding track, spur, or switch shall be at least 22 feet above the rails of the track.