What is underpass bridge?

An underpass bridge is a structure that cuts through an embankment or depression to allow traffic or pedestrians to travel underneath. It is usually constructed to avoid the disruption of traffic flow or to separate different types of transportation such as pedestrians, bicycles, and vehicles. The design of an underpass bridge may also take into account factors such as the height of the vehicles that will be using it, the width of the roadway, and the surrounding terrain. These structures are typically made of reinforced concrete or steel and can range in size from small pedestrian underpasses to large highway underpasses that accommodate high volumes of traffic. Proper maintenance of underpass bridges is important to ensure their structural integrity and safety.