"Hokuriku Shinkansen, Miyama Tunnel, etc." Won the Japan Construction Industry Federation Award 2025 "Civil Engineering Award"
The Hokuriku Shinkansen, Miyama Tunnel, and other projects designed by PACIFIC CONSULTANTS CO., LTD. (Address: Chiyoda-ku, Tokyo; Representative Director, President Executive Officer: Osamu OMOTO) have been awarded the 6th Civil Engineering Award at the Nikkenren Awards 2025 (sponsored by the Japan Construction Industry Federation). The Nikkenren Award - Civil Engineering Award is awarded annually to outstanding projects and structures, with the aim of promoting the quality of civil engineering business planning, as well as the advancement and improvement of planning, design, construction, environment, maintenance, and other civil engineering technologies, thereby creating excellent civil engineering assets and contributing to the enrichment of the foundations for the lives of the people and industrial activity in Japan.
Official website: https://www.nikkenren.com/sougou/award.html
■ Overview
Hokuriku Shinkansen, Miyama Tunnel, etc.
Environmental conservation efforts for Ramsar Convention-registered wetlands and productivity improvement measures for tunnel construction, etc.
Location: Tsuruga City, Fukui Prefecture
Facility Manager: Hokuriku Shinkansen Construction Bureau Japan Railway Construction, Transport and Technology Agency (JRTT)
Designer: PACIFIC CONSULTANTS CO., LTD.
Contractor: Sumitomo Mitsui Construction Co., Ltd., Kyokuto Kowa Corp., Michibata Gumi Corp. - Specific Construction Joint Venture
Parties involved: Hara Kogyo Co., Ltd., SMC Civil Technos Co., Ltd., Suganami Co., Ltd., Kusunoki Construction Co., Ltd., Okamoto Construction System Co., Ltd., Takemoto Foundation Works Co., Ltd., Ueda Foundation Works Co., Ltd.
Construction started date: March 13, 2017
Construction completed date: March 10, 2023
■Reasons for Winning the Award
This project involved construction of tunnels, bridges, etc., with consideration given to environmental conservation of Nakamiike Wetland, a Ramsar Convention-registered wetland, and shortening the construction period. To avoid impacting the wetland environment due to a drop in the groundwater level after completion, the horizontal alignment and planned height were changed, and the tunnel was made into a circular, non-drained structure. In addition, the viaduct employed the SPER construction method, which uses half-precast materials to rapidly construct bridge piers, significantly shortening the construction period in preparation for the opening of the Hokuriku Shinkansen.
The project story "Hokuriku Shinkansen Tsuruga Extension Project Vol. 2 - Miyama Tunnel" has been published on our website "INSIGHT."
https://en.pacific.co.jp/insight/2024/12/hokuriku-vol02.html