Deck (bridge)

A deck on a bridge is like the floor of a big hallway that goes over a big hole or a river. Think of the deck like the carpet or the tile you walk on at home, but much bigger and stronger so that cars, trucks, and even trains can drive on it.

When people want to go from one side of the river to the other, they can use the bridge's deck to walk, ride, or drive across. Without the deck, people and vehicles would have to swim or boat across the river, and that can be very dangerous and time-consuming.

The deck of a bridge is made up of layers of different materials to make it strong and safe. The top layer is called the road surface, usually made of asphalt or concrete. Underneath the road surface, there are layers of steel, concrete, or other materials that are designed to support the weight of the bridge and the traffic on it.

The deck is usually held up by tall pillars called piers or abutments. These pillars or abutments make sure the deck does not collapse and fall into the water. Without the supporting piers or abutments, the deck would sink down into the river and the people and vehicles on the bridge would fall into the water.

So, in a nutshell, a bridge's deck is the big strong floor of the bridge that people and vehicles use to cross the river or any other obstacle the bridge is built over.