[JP] Kamanashigawa Bridge
Posted: 6. Aug 2025, 15:10
JR Central Publicly Reveals River Bridge Construction for the Linear Chuo Shinkansen for the First Time – Including the Longest Structure, the Kamanashigawa Bridge
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釜無川に建設中のリニア中央新幹線の橋梁（5日、山梨県中央市）Linear Central Shinkansen (Maglev) bridge under construction on the Kamanashi River, Chuo, Yamanashi, 5 August.
Photo from: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06
On August 5, Central Japan Railway Company (JR Central) granted the media first access to construction sites of river bridges for the Linear Chuo Shinkansen. This included the Kamanashigawa Bridge in Yamanashi Prefecture, which will be the longest river bridge on the route between Shinagawa and Nagoya. The substructure, including the bridge piers, is nearly complete, and construction of the superstructure is currently underway. In addition to the press, 16 residents of Yamanashi Prefecture selected through a regional infrastructure site visit program organized by the prefectural government were invited to visit the bridge and receive an explanation of the ongoing construction.
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Construction site of the Linear Chuo Shinkansen continuing beyond the Kamanashigawa Bridge (background) (Courtesy of JR Central).
釜無川橋りょう（写真奥）に続くリニア中央新幹線の建設現場（JR東海提供）Photo from: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06
Two bridges were opened to the public: the Kamanashigawa Bridge, which spans 754 meters across the Kamanashi River, and the Jonengawa Bridge, located immediately to the east and measuring 225 meters in length. These structures are located approximately 5 kilometers west of the planned Yamanashi Prefecture Linear Station (provisional name, Kofu City). The bridges are being constructed using the cantilever erection method, in which the bridge girder is extended to both sides from the top of the piers. This results in concrete structures that resemble large balancing scales.
At the upper section of the Jonengawa Bridge, which stands approximately 20 meters high, the location for the guideway—on which the Linear Chuo Shinkansen vehicles will run—was indicated. One participant in the site visit, 15-year-old Nao Shibuya, who joined with her family, remarked, “I’m excited to think that the Linear will run here and we’ll be able to get to Tokyo quickly.”
Construction of the Kamanashigawa Bridge began in April 2021, with completion of the structural components targeted for August 2026. However, as work on the river can only proceed during the lower water periods from November to May, there remains a possibility that the construction schedule may be extended.
Info based on Nikkei Shimbun: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06
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- 2025-08-06_Nihon_Keizai_Shimbun_1
Photo from: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06
On August 5, Central Japan Railway Company (JR Central) granted the media first access to construction sites of river bridges for the Linear Chuo Shinkansen. This included the Kamanashigawa Bridge in Yamanashi Prefecture, which will be the longest river bridge on the route between Shinagawa and Nagoya. The substructure, including the bridge piers, is nearly complete, and construction of the superstructure is currently underway. In addition to the press, 16 residents of Yamanashi Prefecture selected through a regional infrastructure site visit program organized by the prefectural government were invited to visit the bridge and receive an explanation of the ongoing construction.
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- 2025-08-06_Nihon_Keizai_Shimbun_2
釜無川橋りょう（写真奥）に続くリニア中央新幹線の建設現場（JR東海提供）Photo from: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06
Two bridges were opened to the public: the Kamanashigawa Bridge, which spans 754 meters across the Kamanashi River, and the Jonengawa Bridge, located immediately to the east and measuring 225 meters in length. These structures are located approximately 5 kilometers west of the planned Yamanashi Prefecture Linear Station (provisional name, Kofu City). The bridges are being constructed using the cantilever erection method, in which the bridge girder is extended to both sides from the top of the piers. This results in concrete structures that resemble large balancing scales.
At the upper section of the Jonengawa Bridge, which stands approximately 20 meters high, the location for the guideway—on which the Linear Chuo Shinkansen vehicles will run—was indicated. One participant in the site visit, 15-year-old Nao Shibuya, who joined with her family, remarked, “I’m excited to think that the Linear will run here and we’ll be able to get to Tokyo quickly.”
Construction of the Kamanashigawa Bridge began in April 2021, with completion of the structural components targeted for August 2026. However, as work on the river can only proceed during the lower water periods from November to May, there remains a possibility that the construction schedule may be extended.
Info based on Nikkei Shimbun: https://www.nikkei.com/nkd/company/arti ... =9022&ba=1 Accessed 2025-08-06