Great Prototype Video for the Mississippi River Bridges

I ran across this great prototype video taken from the cab of a maintence truck crossing the Mississipp River.  Its very cool and extremely helpful since it shows the westbound signals at the approach to the rotating bridge.  These signal are normally impossible to see due to the tree cover and no road access.  This is the first time i've seen them.  I had assumed that they were similar to the east bound signals.  Its good to see that I was right!