Oshima Tunnel
The Oshima Tunnel (渡島トンネル, Oshima tonneru) is a 32.675-kilometer-long (20.303 mi) railway tunnel that is under construction in southern Hokkaido. It will link the city of Hokuto with the town of Yakumo.
 The current northern terminus of the Hokkaido Shinkansen with the construction site in the background | |
| Overview | |
|---|---|
| Official name | Japanese: 渡島トンネル |
| Line | Hokkaido Shinkansen |
| Location | Japan (Hokkaido) |
| System | Shinkansen |
| Start | Hokuto |
| End | Yakumo |
| Operation | |
| Work begun | November 2016 |
| Owner | JR Hokkaido |
| Traffic | Shinkansen |
| Character | Passenger |
| Technical | |
| Length | 32.675 km (20.303 mi) |
| No. of tracks | 1 double-track tube |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Electrified | 25 kV AC, 50 Hz, overhead catenary |
| Operating speed | Maximum speed: 260 km/h (160 mph) |
The Oshima Tunnel will be a part of the Hokkaido Shinkansen, located between its current northern terminus at Shin-Hakodate-Hokuto Station and the planned Shin-Yakumo Station. Drilling began in 2016 and is set to finish in 2024. Upon its completion it will surpass the Hakkōda Tunnel in Aomori Prefecture as the longest terrestrial tunnel in Japan.[1]
References
- "渡島トンネル、安全な工事を 北斗で祈願式 陸上では国内最長" [Safe construction prayer ceremony in Hokuto for the Oshima Tunnel set to be the longest in Japan on land]. The Hokkaido Shimbun Press. 9 November 2016. Archived from the original on 9 November 2016. Retrieved 13 April 2020.
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