This is an interactive 2-lane automotive swing bridge, Clearence is approximately 375 feet
on each side in the open position. This is is designed to be triggered to open the span and stop automotive traffic when
some form of water traffic which has been set up as a locomotive comes within the trigger radius on the 4 invisible
tracks in the water. 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.