Shin-Kanmon Tunnel

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Shin-Kanmon Tunnel

Tunnel entrance
Overview
Line	Sanyō Shinkansen
Location	Honshu–Kyushu
Operation
Opened	March 10, 1975
Owner	JR West
Operator	JR West
Character	Passenger
Technical
Line length	18.713 km (11.628 mi)
No. of tracks	2
Track gauge	1,435 mm (4 ft 8+1⁄2 in)
Operating speed	300 km/h (185 mph)

33°57′57.4″N 130°57′47.2″E / 33.965944°N 130.963111°E / 33.965944; 130.963111 The Shin-Kanmon Tunnel (新関門トンネル, shin-kanmon tonneru) is a 18.713-kilometre (11.628 mi) long undersea railway tunnel under the Kanmon Straits connecting Shin-Shimonoseki Station and Kokura Station.^[1]

At the time of opening in March of 1975, it was the longest railway tunnel in Japan before being overtaken by in 1988 the opening of the Seikan Tunnel. It is also the longest tunnel section on the entire Sanyo/Tokaido Shinkansen line.