What ended the nine-year deadlock?

Gov. Yasutomo Suzuki reversed the rejection of his predecessor, who had cited concerns over environmental impacts such as a possible decrease in water levels in the Oi River. In July, Suzuki announced his decision to approve the start of construction after a prefectural government panel approved 28 environmental conservation measures in March.

What environmental protections are included in the agreement?

The agreement includes 28 sets of environmental conservation measures, with emphasis on mitigating impact on water flow in the Oi River and the surrounding natural environment. A monitoring system will be jointly operated by the central and prefectural governments, and construction work will be suspended for investigations if an unforeseen situation occurs.

When will construction be complete?

The completion of the Shizuoka section is expected to take more than 10 years.

Japan Times TechJul 19, 2026Jul 19, 2026, 13:00 JST2 min read

Shizuoka, JR Tokai sign maglev pact, construction to begin

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3 Key Points

What happened
Shizuoka Prefecture and JR Tokai signed an agreement on Saturday to begin construction of the Shizuoka section of the Chuo Shinkansen maglev line, ending a nine-year deadlock after Gov. Yasutomo Suzuki reversed his predecessor's rejection. The agreement includes 28 environmental conservation measures, chiefly to protect the Oi River's water flow and surrounding ecosystems.
Why it matters
The maglev project has been stalled since a prior governor cited environmental concerns, particularly the risk of water-level drops in the Oi River. The new agreement—jointly monitored by central and prefectural governments, with a provision to suspend work if unforeseen impacts arise—allows construction to move forward while addressing resident anxiety about environmental damage.
What to watch
Completion of the Shizuoka section is expected to take more than 10 years. JR Tokai will hold briefings for local residents before starting work. The prefectural government and JR Tokai also signed a separate regional economic development agreement aimed in part at promoting tourism via the existing Tokaido Shinkansen.

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Context & Analysis

The signing marks the resolution of a long-running environmental dispute that had blocked the maglev project in Shizuoka. The previous governor's nine-year rejection centered on fears that the line's construction would lower water levels in the Oi River—a critical resource for the prefecture and surrounding communities. Suzuki's reversal this year followed a methodical process: a prefectural panel approved JR Tokai's 28 mitigation measures in March, and after explanatory meetings held from May to June in Shizuoka city and 10 municipalities along the Oi River, he announced his approval on July 7. The signed agreement formalizes these measures and establishes a joint oversight structure with built-in safeguards: a monitoring system run by both central and prefectural authorities, and a clause to halt work for investigation if unexpected problems emerge. This architecture is designed to balance the economic benefits of the maglev—part of a larger effort to enhance regional tourism and development—against legitimate resident concerns about irreversible environmental change. The agreement's focus on the Oi River reflects that the water-flow issue was the crux of the original objection.

FAQ

What ended the nine-year deadlock?: Gov. Yasutomo Suzuki reversed the rejection of his predecessor, who had cited concerns over environmental impacts such as a possible decrease in water levels in the Oi River. In July, Suzuki announced his decision to approve the start of construction after a prefectural government panel approved 28 environmental conservation measures in March.
What environmental protections are included in the agreement?: The agreement includes 28 sets of environmental conservation measures, with emphasis on mitigating impact on water flow in the Oi River and the surrounding natural environment. A monitoring system will be jointly operated by the central and prefectural governments, and construction work will be suspended for investigations if an unforeseen situation occurs.
When will construction be complete?: The completion of the Shizuoka section is expected to take more than 10 years.

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