Shizuoka Governor Suzuki Yasutomo has expressed his approval for the construction of the Shizuoka section of the Maglev (Linear Chuo Shinkansen) in Japan, marking a significant step forward for the project. However, the original goal of a 2027 opening has been abandoned, and due to soaring construction costs, the launch is now expected to be delayed until at least 2036.

Shizuoka Governor Expresses Approval for Construction

Suzuki Yasutomo, the Governor of Shizuoka Prefecture in Japan, officially expressed his intent to allow construction to proceed on the Shizuoka section of the Maglev line on July 7, 2026. This move signals an end to nearly nine years of deadlock that began in 2017 when former Governor Kawakatsu Heita opposed the project citing environmental concerns. Since taking office, Governor Suzuki has maintained that he understands the necessity of the Maglev and has shown a positive stance toward dialogue with Central Japan Railway Company (JR Central) and the Japanese government.

On July 18, 2026, a natural environment conservation agreement, which was a prerequisite for starting the work, was signed between the prefecture and JR Central. Following this, the Japanese Minister of Land, Infrastructure, Transport and Tourism, Kaneko Yasushi, urged JR Central during a press conference on July 21 to push forward with construction steadily while ensuring local cooperation. The Governor has also indicated that boring surveys to investigate geology and groundwater should proceed, setting the stage for actual physical work to begin. The key remaining challenges involve reaching a consensus on protecting the water resources of the Oi River and maintaining the ecosystem of the Southern Alps. Refer to the timeline below.

New Opening Timeline Set for 2036 or Later

While a political agreement for construction has been reached, it is now certain that the opening date for the line between Shinagawa (Tokyo) and Nagoya will be significantly delayed from the original 2027 plan. JR Central formally announced the abandonment of the 2027 opening in October 2025, specifically citing the lack of progress in the Shizuoka section. Since tunnel excavation in Shizuoka is estimated to take at least 10 years, even if work starts within 2026, the earliest possible opening would be in 2036 or later.

JR Central has gained experience from tunnel projects in Yamanashi and Nagano Prefectures, but the Shizuoka section through the Southern Alps is considered extremely difficult. The geological structure is complex, and high-level technical measures are required for environmental preservation, making it nearly impossible to shorten the construction period. This delay is also likely to impact the extension plan to Shin-Osaka, which originally aimed for a 2045 full-line opening. This timeline uncertainty is casting a shadow over regional development plans and private sector investment decisions near the planned intermediate stations in Japan. Refer to the comparative data below.

Project Concerns and Financial Structure

Factors Behind the Cost Surge to 11 Trillion Yen

The total construction cost for the Linear Chuo Shinkansen has ballooned far beyond initial Japanese government expectations. In April 2021, the estimate rose by 1.5 trillion yen to approximately 7.04 trillion yen, but by October 2025, another 4 trillion yen was added, bringing the total for the Shinagawa-Nagoya section alone to 11 trillion yen. This increase includes external factors such as skyrocketing material and labor costs, as well as a 2.3 trillion yen reserve fund (including 1 trillion yen specifically for inflation) to prepare for future price hikes.

The financial strain is particularly acute due to the increased costs of mitigation measures resulting from the 9-year delay in Shizuoka. Maintenance costs for idle equipment and the need for more advanced environmental protection measures have been primary drivers of this cost doubling. Unlike the Seibi Shinkansen lines, which are built by the government-affiliated Japan Railway Construction, Transport and Technology Agency (JRTT), the Maglev is being handled entirely by JR Central, meaning the company must bear almost the entire financial burden themselves. Transitioning into an era of rising interest rates in Japan presents a historically harsh business environment for a project carrying such massive interest-bearing debt.

JR Central’s Long-term Financial Burden and Management Risks

With total construction costs reaching 11 trillion yen, the pressure on JR Central’s financial base is expected to be prolonged. Credit rating agencies such as S&P Global Ratings have pointed out that the Maglev cannot generate cash flow before it opens, and they analyze that a further increase in interest-bearing debt will weigh heavily on the company’s long-term rating. Cumulative capital investment through March 2025 was about 2 trillion yen, meaning an additional 9 trillion yen in investment is required moving forward.

The company’s earnings are heavily dependent on the highly profitable Tokaido Shinkansen. While JR Central expects its ordinary profit to hit record highs in the fiscal year ending March 2026 with an operating profit margin exceeding 40%, structural vulnerabilities remain hidden beneath this success. If ridership were to drop sharply due to a large-scale disaster like a Nankai Trough earthquake or another pandemic, securing funds for Maglev construction would become extremely difficult. Although an annual revenue increase of approximately 70 billion yen is expected after the Maglev opens, repaying the vast debt while funding the maintenance of the aging Tokaido Shinkansen will be a monumental challenge for the company’s management.

Formation of the Japan Central Corridor and Future Transportation Network

Aviation Market Restructuring and Regional Economic Impacts

The full-line opening of the Linear Chuo Shinkansen is expected to fundamentally transform Japan’s transportation network, forming a massive Japan Central Corridor. This corridor will connect the Tokyo, Nagoya, and Osaka metropolitan areas—home to about 66 million people—within a one-hour travel range, enhancing Japan’s international competitiveness. According to estimates using the SCGE (Spatial Computable General Equilibrium) model, air travel demand is predicted to plummet by 84.0% for the Tokyo-Nagoya route and 72.6% for the Tokyo-Osaka route after the Maglev opens.

Airlines in Japan will be forced to shift their strategies, likely reallocating aircraft from short-haul domestic routes to medium- and long-haul routes and strengthening international connections. Meanwhile, the four intermediate stations in Kanagawa, Yamanashi, Nagano, and Gifu Prefectures are expected to become new hubs for regional economic revitalization. Furthermore, as high-speed travel demand shifts to the Maglev, the currently congested Tokaido Shinkansen will have more capacity, allowing for more frequent stops of Hikari and Kodama trains at stations in Shizuoka Prefecture. Data from the Japanese government suggests this could result in a cumulative economic ripple effect of 167.9 billion yen for Shizuoka Prefecture alone over ten years.

Construction Hurdles and Future Outlook

Although construction approval has moved the project forward, many hurdles remain before full excavation can resume in Shizuoka. The immediate focus is on the progress of the boring surveys approved by Governor Suzuki. These surveys are crucial for accurately understanding geology and groundwater flow to present concrete solutions for the concerns regarding water resources. While JR Central and the prefecture reached an agreement on January 24, 2026, regarding compensation if water usage is affected, rigorous environmental monitoring during actual construction will be indispensable.

Future attention will be on the discussions within the Japanese government’s monitoring committee and the specialized subcommittee established by Shizuoka Prefecture. Governor Suzuki has stated that a political decision will ultimately be necessary, suggesting that beyond technical debates, clear and thorough explanations are needed to alleviate the anxieties of residents in the river basin. Another major challenge is completing the difficult construction while ensuring safety and containing costs that have already doubled. Whether Japan can continue to lead the world with its Maglev technology and realize the national strategy of creating a redundant system for its vital economic artery is now at a critical juncture as the project aims for 2036 or later.

Reference Page

• 【Overview of JRTT and Development of Seibi Shinkansen – Ministry of Land, Infrastructure, Transport and Tourism】https://www.mlit.go.jp/common/001402283.pdf

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