Obstructing public passages

A. No person shall wilfully obstruct the free, convenient, and normal use of any public sidewalk, street, highway, bridge, alley, road, or other passageway, or the entrance, corridor, or passage of any public building, structure, water craft, or ferry, by impeding, hindering, stifling, retarding, or restraining traffic or passage thereon or therein. B. Whoever violates the provisions of this Section shall be guilty of a misdemeanor and upon conviction thereof shall be fined not more than five hundred dollars or imprisoned for not more than six months, or both fined and imprisoned. C. This Section shall not be applicable to the erection or construction of any barricades or other forms of obstructions as a safety measure in connection with construction, excavation, maintenance, repair, replacement, or other work in or adjacent to any public sidewalk, street, highway, bridge, alley, road, or other passageway, nor to the placing of barricades or other forms of obstruction by governmental authorities, or any officer or agent thereof, in the proper performance of duties.