A lattice bridge is a type of bridge made up of a crisscross pattern of beams and bars that form a strong and stable structure. The triangle being the most dimensionally stable. (Vormvast) It looks like a big puzzle with lots of triangles fitted together.
To construct a lattice bridge, engineers use materials like wood, iron, steel, or concrete. These materials are chosen because they are strong and can handle the weight of people, vehicles, and other things that need to cross the bridge.
Examples of lattice bridges can be found all around the world. Some famous ones include the Iron Bridge in England, the Brooklyn Bridge in the United States, and the Eiffel Tower in France (yes, it's also a type of lattice structure!).