Does anyone know if the drawbridges on the Black river in Port Huron operate in the evening. I will bw heading down for the Frostbite Rondevous this weekend but can't leave until about 6pm friday evening. The way I figure that will put me at the Black River around 8 or 8:30. If the drawbridges can't be opened no sense in going till Saturday morning. If they can be opened does anyone know what the schedule for opening/closing is? I believe there are three of these bridges.