北陸新幹線延伸、費用４兆円　資材高騰で当初の２倍に―国交省

　北陸新幹線の敦賀―新大阪間の建設費が当初想定の２倍となる約４兆円に上る見通しになったことが１８日、分かった。国土交通省が試算したところ、資材高騰などの影響で膨れ上がったという。コスト増で費用対効果が低下し、着工の条件を満たさない恐れがある。
　大阪延伸を巡り、与党は２０１６年、福井県の敦賀駅から同県小浜市と京都駅を経由して新大阪駅に至る「小浜・京都ルート」の採用を決定。全長約１４０キロで、建設費は約２兆円と見込んでいた。
　与党は２５年度中の着工に向け、年内に同ルートの詳細や駅の位置を決定する方針で、国交省が準備を進めている。同省が詳細なルート案に基づき改めて建設費を試算した結果、約４兆円に拡大。資材高騰に加え、建設業界の人手不足などが影響したとみられる。（2024/07/18-15:54）

The Hokuriku Shinkansen bullet train line's extension from Tsuruga in the central Japan prefecture of Fukui to the western city of Osaka is now estimated to cost about 4 trillion yen, double the initial projection, it was learned Thursday.
   Construction material prices are surging and labor costs are ballooning amid serious manpower shortages, a transport ministry official said.
   The ministry came up with the new estimate based on a detailed 140-kilometer route proposal for the line's extension from Tsuruga Station to Shin-Osaka Station, a Shinkansen hub in the Osaka area, via another Fukui city of Obama and Kyoto Station, northeast of Osaka. The so-called Obama-Kyoto route was decided by the ruling coalition in 2016.
   The ruling bloc is hoping to decide by the end of the year specifically where the extended line will be constructed and stops will be located, so construction work can get started by March 2026.
   But the surging cost may make the route unfeasible, as the cost-effectiveness ratio is likely to drop below 1.0, people familiar with the matter said.