Any person who shall ride or drive upon any new roadbed or new repairs of any roadbed constructed or being constructed by or under the supervision of the state road commission or any county court before the same is open for traffic, and any person who shall remove any light or guard set up for the purpose of closing such road, or any part thereof, to traffic, and any person who shall otherwise maliciously injure or damage in any manner any road or highway built under the provisions of this chapter, either in the course of its construction or thereafter, or who shall maliciously injure or damage any work, equipment, material or structure used in connection therewith, shall be guilty of a misdemeanor, and, on conviction thereof, shall be fined not more than $100, or imprisoned not more than three months, or, in the discretion of the court, may be both fined and imprisoned.