re: Is there a law mandating a drawbridge opens every 30min?

I remember as a kid my mom and her now ex were in Mobile bay coming in at night in bad weather. they were on a sailboat and the draw bridge (at the time) on Dog River would not open due to the bridge operator falling asleep - they damn near got pushed onto the rocks from the waves and wind before a motorist stopped and woke the guy up.

was very happy when they replaced it.