The given diagram illustrates the comparison between the cross-sections of the Mont-Blanc Road Tunnel and the Seikan Railway Tunnel. Overall, the Mont-Blanc Road Tunnel was built in the mountainous area, while the Seikan Railway Tunnel. Additionally, the former took a shorter time to build and is much shorter than the latter.
The Mont-Blanc Road Tunnel project is an international project, stretching from France to Italy, built from 1957 to 1965. In contrast, the Cross-section of Seikan Railway Tunnel is an intercity project that connects Hokkaido Island and Aomori Island, which took 42 years to build, from 1946 to 1988.
In terms of size, the Mont-Blanc Road Tunnel allows vehicles to travel at a height of 3.5 km, while the remaining was 240m beneath the surface of the Tsugaru Strait. Moreover, the length of the former is 11.60 km, while the latter is around 5 times longer than the Mont-blanc road tunnel, at 53.85 km. Moreover, the shape of Mont-Blanc Road tunnel is a straight road, while the remaining is not.
