This would have been described years ago as an engineering marvel. Never find a better example than this.The way each part moves without interference is amazing.

Also the counter balance on one end must be a lot for the other end to not tip over.

Of course this video was in hyper speed. Wouldn’t be really cool if only took 4 min 46 seconds. I wonder how long it actually took in real time to lay and install one girder. No matter how long it did take this was truly amazingly inspiring to watch.

Brilliant engineers are those who designed that huge piece of machinery and specified everything to perfection.

We have one here in Argentina that we call the Machino. Our bridges are curved, sloped, and banked for the weather. The machine is able to extend counterbalance weights out to 50 meters.Amazing ingenuity and planning, not to mention coordinated teamwork.