alikulkutunneleista
Alikulkutunneleista, commonly known as underpasses, are passageways built beneath existing infrastructure such as roads, railways, or waterways. Their primary purpose is to allow pedestrian, animal, or vehicular traffic to pass safely without interfering with the flow of the overlying system. This separation of traffic significantly enhances safety by preventing collisions and reduces congestion on the main thoroughfare.
Underpasses are constructed using various methods depending on the scale and environment. Common techniques include cut-and-cover,
In urban planning, underpasses are frequently incorporated into road networks to improve traffic flow and pedestrian