roadway underpass
C1881
concept
A roadway underpass is a structure that allows a road to pass beneath another road, railway, or obstacle, providing grade separation and uninterrupted traffic flow.
Observed surface forms (1)
- alpine tunnel ×2
Instances (3)
- Mont Blanc Tunnel via concept surface "alpine tunnel"
- Fréjus Road Tunnel via concept surface "alpine tunnel"
- Triple Underpass