JR Hokkaido and JR East Japan will suspend some Hokkaido Shinkansen services on Sundays from May 10 to July 26 due to maintenance work on the shared Seikan section, including the Seikan Tunnel.
The Hayabusa No. 39 train departing from Tokyo Station at 7:20 p.m. will be suspended between Shin-Aomori and Shin-Hakodate-Hokuto stations and will terminate at Shin-Aomori Station. The Hayate No. 100 train departing from Shin-Hakodate-Hokuto Station at 9:57 p.m. will be suspended.
The overhead contact lines, including trolley wires approximately 1,500 meters long per section, must be replaced overnight, and including the round-trip travel time from the maintenance base to the work site, this requires about six consecutive hours. By significantly extending the time allocated for maintenance work, more reliable operations can be carried out. In the Seikan Tunnel, there are approximately 250 trolley wires, auxiliary suspension lines, and suspension lines that have been in use for more than 30 years, with a total length of about 380 kilometers.
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