A cable-stayed bridge is like a big rope bridge, but instead of being made of wood or string, it's made of concrete and steel. The bridge has towers that are really tall and strong, and lots of cables that go from the towers to the deck of the bridge where cars drive.
The cables help hold up the bridge and make it really strong so it doesn't fall down. Think of the cables like the strings on a guitar, they hold the bridge up and make sure it is sturdy. The cables are attached to the towers and the deck of the bridge making a special pattern that keeps everything stable.
When you're driving on a cable-stayed bridge, it might feel like the bridge is moving a little bit, but that's just because it's so big and long. But don't worry, it's still very safe to drive on!
So, a cable-stayed bridge is like a really cool and strong rope bridge that you can drive on.