Title: Del cemento al puente (From Cement to Bridge)
Description: How is a bridge built?  Cement is mixed with water and rocks to make concrete.  The concrete is poured into holes and into blocks that are stacked to make a bridge.  Once fences and lights are added to the bridge, cars can drive across it.
Subjects: Education, Juvenile Nonfiction, Nonfiction, Bridges, Bridges, juvenile literature, Building, Building, juvenile literature