Tech
Watch how a bridge is constructed using the SLJ900 mega machine
How do you build a bridge without the help of a bridge? The easiest way? This SLJ900 machine.

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Have you ever thought to yourself how bridges are built? I have, but I personally don’t have the brain capacity to even know where to start.
Luckily for people like me, there’s always YouTube.
This video of a SLJ900 machine shows exactly how some bridges are being constructed around the world. “It moves in coordinated parts to deftly erect a bridge or viaduct, balancing its weight on the beams before laying out the groundwork. It’s really cool to see it slide across and pop out,” reports Gizmodo.
Here’s a detailed animation showing exactly how the SLJ900 works its magic:
https://youtu.be/DmLhkS46jpw
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