The transport ministry has revealed new cost estimates for eight candidate routes for the planned extension of the Hokuriku Shinkansen line between Tsuruga Station in Fukui Prefecture and Shin-Osaka Station in Osaka Prefecture.

Including future price rises, the estimated construction costs for the eight routes range from ?1.7 trillion to ?7.9 trillion. The estimates were presented to a meeting of a related committee between the ruling Liberal Democratic Party and its coalition partner, the Japan Innovation Party (JIP), which is also known as Nippon Ishin no Kai.

The cost for the main candidate route, connecting the Fukui city of Obama and Kyoto Station in Kyoto Prefecture, located between Fukui and Osaka, is projected at ?5.5 trillion to ?5.8 trillion, up from the originally estimated ?2.1 trillion and from ?4.8 trillion to ?5.2 trillion projected by the ministry in 2024.