This is an interactive swing bridge for boats and trains. This takes 600 keyframes
(approximately 20 seconds) to close so don't drive too fast. The bridge operators shack is built-in.
The blue invisible tracks are at ground level (z axis = 0 ft 0.0 in).
The green invisible tracks are at z axis = -10 meters (-32 ft 9.0 in) below ground level.
Water level should be set at -3 meters (-9 ft 10 in) below ground level.
NOTE!!! This is offered as an experiment for downloaders to make completely interactive. You will have to add
visible and invisible tracks to cross the span then place triggers, signals, etc plus do some rule setting. Once someone
gets it working correctly I would appreciate it they would write a short README file listing the steps necessary and sending it to me
so I can include it in an updated version of this bridge and with several others I've yet to make. Thanks.