Yamate Tunnel Ventilation Towers in Shoto at Night
There are three towers, but the third one is hidden behind buildings. The road and tunnel under it turns to the right here.
When the tunnel planned in 1990, it went straight because the curve was too tight for a shield machine. The way went under Komaba Campus of University of Tokyo and residential area. The cost to buy underground rights was going to be expensive. Then, a shield machine that could turn along the curve was developed. The plan was altered in 1999.
Yamate Tunnel Ventilation Towers in Shoto at Night
There are three towers, but the third one is hidden behind buildings. The road and tunnel under it turns to the right here.
When the tunnel planned in 1990, it went straight because the curve was too tight for a shield machine. The way went under Komaba Campus of University of Tokyo and residential area. The cost to buy underground rights was going to be expensive. Then, a shield machine that could turn along the curve was developed. The plan was altered in 1999.