The approximately 82 km section of concrete-slab track-bed was built to accommodate the Hokkaido Shinkansen, and is dual gauge, with both narrow (national standard) 1,067 mm gauge and 1,435 mm gauge track.
The line was originally electrified at 20 kV AC (50 Hz) and was changed in 2016 to the Shinkansen-standard 25 kV AC (50 Hz) [REF].