How Does a ‘Bridge’ Stay Standing for Centuries?

Bridges stay standing for centuries because they are built with strong materials and smart shapes. Think of a bridge like a big, sturdy ruler that can hold up cars and people without breaking, even if it's been around for hundreds of years!

Some bridges look like arches or triangles, and these shapes help spread out the weight so nothing gets too heavy in one place. It's kind of like when you stack blocks: stacking them all on top of each other can make them fall over, but if they're arranged properly, they stand tall for a long time.

Engineers use materials that don't break easily, like stone or steel. These materials are tough and can handle a lot of weight, even from heavy trucks passing by every day.