Okay kiddo, so a vlotbrug is a type of bridge that is designed to float on top of the water. It's kind of like a big raft that you can drive or walk on to get from one side of the water to the other.
The cool thing about a vlotbrug is that it can move up and down with the water level. That means that even if the water rises because of rain or a flood, the vlotbrug can still stay in place and keep working.
Vlotbrugs are also usually made out of materials that can withstand water and weather, like metal or concrete. That way they can last a long time and stay safe for people to use.
So, the next time you see a vlotbrug, just remember that it's like a big floating bridge that helps people get across the water safely and easily!