Kyushu Shinkansen
JR Kyushu is constructing an extension (known as the West Kyushu Shinkansen) line of the Kyushu Shinkansen to , partly to full Shinkansen standard gauge construction standards (Takeo Onsen – Nagasaki) with the existing narrow gauge section between Shin-Tosu and Takeo Onsen to be upgraded as part of this project.