9th Japan Construction International Award

日本語（Japanese）

Construction and Development Project Category

First Prize
U.S.A SHAWOOD Business, Sommers Bend Project

Project Overview

  • With the global vision to “make home the happiest place in the world,” Sekisui House launched sales of SHAWOOD—its proprietary wood-frame detached homes—at Sommers Bend, a 57-lot residential community in California, in 2024. Drawing on technologies developed in Japan, the company is creating value that supports happiness through both tangible and intangible approaches.
  • The project delivers safe, secure, and comfortable living through expansive spaces enabled by the company’s S-MJ Construction Method—an evolution of Japan’s traditional post-and-beam construction—large openings that connect indoor and outdoor spaces, and meticulous design considerations developed in Japan. ZEH specifications and highly durable materials also incorporate technologies that enhance environmental performance and disaster resilience.

Data

Construction Period: June 2021 – March 2024
Applicant: Sekisui House, Ltd.
The Client: Sekisui House U.S.,Inc.
The Consultant: Sekisui House U.S.,Inc.
The Contractor: Sekisui House U.S.,Inc.
Operation and Maintenance: Sekisui House U.S.,Inc.

Highly Evaluated Points

  • Expanded ZEH homes equipped as standard with photovoltaic systems and battery storage, while adopting robust structural components. By combining high design flexibility with disaster resilience and environmental performance, the homes have earned strong customer recognition.
  • Developed local personnel capable of carrying out precise construction and promoted skills transfer, enabling housing quality to be maintained continuously and consistently.
  • Undertook the project in an integrated manner from the land development stage, while promoting the project through model-home tours and opening ceremonies and building trust with local residents. The entire developed community functions as a showcase where visitors can experience the homes’ performance and the project’s placemaking philosophy.
  • Applied findings from surveys and experiments at in-house research facilities, together with knowledge gained from disaster response, to develop long-life homes with excellent disaster resilience.
  • Conducted business using certified timber with consideration for legality and biodiversity. Pre-cutting of components is promoted to reduce construction-site waste and contribute to environmental conservation.
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Campus Development Project of Indian Institute of Technology, Hyderabad

Project Overview

  • The facilities designed under the project comprise the Convention Center; Knowledge Center; International Guest House (accommodation for visiting faculty and others); Sports and Cultural Complex (indoor and outdoor sports facilities and rooms for cultural activities); Research Centers Complex; and two Technology Incubation Park buildings of the same scale.
  • The project called for an attractive campus design capable of appealing to audiences in India and abroad. Architectural design is deeply rooted in local history and culture. While addressing contemporary priorities such as the SDGs and an open and inclusive university, the team assessed the suitability of technologies through an understanding of local industry structures and available construction techniques.

Data

Construction Period: March 2019 – March 2024
Applicant: IITH CAMPUS DESIGN TEAM OF THE UNIVERSITY OF TOKYO/ NIHON SEKKEI, INC./ APL DESIGN WORKSHOP
The Client: Indian Institute of Technology
The Consultant: IITH CAMPUS DESIGN TEAM OF THE UNIVERSITY OF TOKYO/ NIHON SEKKEI, INC./ APL DESIGN WORKSHOP
The Contractor: Larsen & Toubro Construction
Operation and Maintenance: Indian Institute of Technology

Highly Evaluated Points

  • Shared three-dimensional models through BIM to visualize design intent and improve accuracy during the construction stage.
  • Reduced environmental impacts through solar shading and natural ventilation, while promoting longer building life through a skeleton-infill approach.
  • Achieved energy savings and lower life-cycle costs through high roof insulation, the use of natural daylight, the creation of shade suited to the highland climate, and natural ventilation, reducing environmental impacts from construction through operation.
  • Reduced water consumption and promoted greening, while ensuring transparency through environmental certification and information sharing with relevant organizations.
  • Ensured the appropriateness of project costs through consultation with relevant organizations and promoted reliable project delivery through accurate estimates and construction planning.
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National Road No.5 Improvement Project Middle Section Contract Package 2 (Pursat – Pray Svay)

Project Overview

  • As part of the 366-km National Road No. 5 Improvement Project in Cambodia, the project widened a 47-km section between Pursat and Pray Svay in the Middle Section to four lanes. The road and bridge works strengthened the wider regional transport network.
  • Landmine risk mitigation and ICT-based construction management improved quality and shortened the schedule. The project trained 1,400 people, promoted women's participation, and achieved 7.7 million accident-free work hours, culminating in a national project that symbolizes friendship between Japan and Cambodia.

Data

Construction Period: April 2019 – September 2022
Applicant: OBAYASHI CORPORATION/ Katahira & Engineers International / Oriental Consultants Global Co., Ltd.
The Client: Ministry of Public Works and Transport, Kingdom of Cambodia
The Consultant: Katahira & Engineers International/ Oriental Consultants Global Co., Ltd.
The Contractor: OBAYASHI CORPORATION
Operation and Maintenance: Department of Public Works and Transport, Pursat (DPWT Pursat)/ Department of Public Works and Transport, Battambang (DPWT Battambang)

Highly Evaluated Points

  • Extended road service life by strengthening the pavement structure and adopting asphalt pavement at the outer edges of the shoulders.
  • Installed pedestrian crossings in front of public facilities and achieved land acquisition with zero complaints or opposition through consensus building that reflected residents’ needs.
  • Promoted equal pay for equal work and expanded employment opportunities for women, while implementing rigorous safety management through site patrols and remote monitoring.
  • Achieved on-site digital transformation through continuous monitoring with drones and webcams, optimizing progress management and the placement of equipment and materials.
  • During the warranty period, voluntarily continued daily round trips of approximately 100 km to carry out out-of-scope road surface washing, drainage cleaning, and grass cutting.
  • Raised local construction quality and standards through a management system in which Japanese engineers provided direct on-site guidance.
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Project for Reconstruction of Soumba Bridge on the National Road No.3

Project Overview

  • The project replaced the aging Soumba Bridge on National Road No. 3, a major arterial route, eliminating a bottleneck on Trans-African Highway 7, an international corridor linking the ECOWAS region. By rebuilding transport infrastructure that supports logistics and daily life in West Africa, the project improved regional connectivity and contributed to sustainable development.
  • Under Japan's Grant Aid, the bridge, road, and river works were developed as an integrated package. The aging single-lane bridge was replaced with a two-lane bridge with sidewalks on both sides, significantly improving safety and transport efficiency. Enhanced disaster resilience and a safer travel environment have contributed to safer, more comfortable lives for local residents.

Data

Construction Period: December 2019 – May 2023
Applicant: Central Consultant Inc. / Dai Nippon Construction
The Client: Ministère du Plan et de la Coopération Internationale (MPCI)
The Consultant: Central Consultant Inc.
The Contractor: Dai Nippon Construction
Operation and Maintenance: Ministère des Infrastructures et des Travaux Publics (MITP)

Highly Evaluated Points

  • Eliminated a logistics bottleneck by replacing the national highway bridge and widening it to two lanes, contributing to regional economic development.
  • Created employment through the direct hiring of local personnel and developed human resources by accepting trainees from government agencies.
  • As a national highway bridge serving as an emergency transport route, ensured a high level of safety capable of withstanding earthquakes on the scale of the largest experienced in the past, while adopting a design that takes into account the Soumba River’s vulnerability to flooding due to the absence of levees.
  • Conducted surveys on environmental assessment items, including pollution control, and gave due consideration to environmental conservation during construction. Environmental impacts during construction were continuously evaluated, and transparency was ensured through information disclosure to relevant organizations and local residents.
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Jabodebek LRT Project

Project Overview

  • The Jabodebek LRT is a 44.41-km urban railway with 17 stations connecting the Jakarta Special Capital Region and West Java. Construction began under a Presidential Decree issued in 2015. From April 2017, OCG was responsible for detailed design review, construction supervision, and contract administration, contributing to the implementation of a driverless operating system.
  • With a total project cost of approximately JPY 290 billion and a consultancy contract of approximately JPY 5.6 billion, this non-ODA railway project was financed through Indonesia's national budget and loans from multinational banks. OCG managed the design and construction of civil works and railway systems and implemented FIDIC-based contract administration and risk management under a non-FIDIC contract.

Data

Construction Period: September 2015 – August 2023
Applicant: Oriental Consultants Global (OCG)
The Client: Directorate General of Railways (DGR)
The Consultant: PT. Adhi Karya
The Contractor: PT. Adhi Karya
Operation and Maintenance: PT K.A.I

Highly Evaluated Points

  • Combined seismic isolation structures based on Japanese standards with train operation control to achieve advanced earthquake safety measures.
  • Led additional testing, changes to ground design, and contract administration, making a major contribution to securing the project schedule and completing the works.
  • Employed approximately 120 local personnel and assigned local human resources across a wide range of fields, including design, construction inspection, and contract administration, transferring railway technology through OJT.
  • Assigned dedicated environmental specialists and rigorously managed noise, dust, drainage, and other environmental measures to minimize impacts on the surrounding environment.
  • Shared the results of environmental measures with relevant organizations and local residents, helping gain understanding and trust and contributing to successful completion of the project.
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THE PROJECT FOR SEWERAGE SYSTEM DEVELOPMENT IN PHNOM PENH

Project Overview

  • Rapid urbanization in Phnom Penh had severely degraded the water environment as the natural purification functions of lakes and wetlands declined. The project took on the challenge of establishing the foundation for sustainable urban development by constructing Phnom Penh's first full-scale mechanical sewage treatment facility using Japanese technology.
  • As Phnom Penh's first public sewage treatment plant, the project faced major challenges, including a lack of experienced technicians and concerns over operating costs. The Pre-treated Trickling Filter (PTF) process was selected because its energy efficiency, compact footprint, and ease of maintenance matched Cambodia's needs.

Data

Construction Period: May 14, 2021 – November 15, 2023
Applicant: KUBOTA CONSTRUCTION Co., Ltd. / METAWATER Co., Ltd. / CTI Engineering International Co., Ltd. / Nippon Kouei., Ltd. / Water and Sewer Bureau, City of Kitakyushu
The Client: Department of Public Works and Transport of Phnom Penh Capital Administration
The Consultant: The Joint Venture of CTI Engineering International Co., Ltd. / Nippon Kouei., Ltd. / Water and Sewer Bureau, City of Kitakyushu
The Contractor: KUBOTA METAWATER JOINT VENTURE
Operation and Maintenance: Drainage Pumping Station and Sewerage Treatment Plant Office (DSO)

Highly Evaluated Points

  • Through public-private invitation programs and technical seminars, promoted the adoption of Japan’s proprietary PTF process, achieving energy and space savings, stable treatment performance, and more efficient maintenance.
  • Provided technical guidance in addition to OJT to support the sustainable and stable operation of the sewage treatment plant.
  • Contributed to greater public awareness of the project through large-scale ceremonies attended by the Prime Minister and other officials, together with public relations activities.
  • Based on the track record of the sewage treatment plant using the PTF process, further deployment to larger-scale facilities in the same area is expected.
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Suspended Bridge over the Danube in Braila Area

Project Overview

  • This project involved constructing a suspension bridge over the Danube River connecting Braila, a major city in eastern Romania, with Tulcea County on the opposite bank.
  • With the third-longest main span among suspension bridges in Europe, it is regarded as one of Romania's largest infrastructure projects of the past 30 years.
  • Opening of the Braila Bridge reduced the Danube crossing time, previously dependent on ferries, from approximately 50 minutes to just two to three minutes. By stimulating logistics, tourism, and employment, the bridge is contributing to regional economic development and is highly regarded as a landmark project symbolizing European and international cooperation.

Data

Construction Period: April 2019 – July 2023
Applicant: IHI Infra-square Co., Ltd.
The Client: NATIONAL COMPANY FOR ROAD INFRASTRUCTURE ADMINISTRATION
The Consultant: Webuild SpA-IHI Infrastructure Systems Co., Ltd. Joint Venture
The Contractor: Webuild SpA-IHI Infrastructure Systems Co., Ltd. Joint Venture
Operation and Maintenance: NATIONAL COMPANY FOR ROAD INFRASTRUCTURE ADMINISTRATION

Highly Evaluated Points

  • Won a Romanian public-sector project through international competitive bidding and completed a high-quality long-span suspension bridge. Japanese engineers were stationed at the local fabrication facility to ensure quality while reducing environmental impacts and transportation costs.
  • Introduced a dry-air supply system inside the bridge to reduce future repainting costs.
  • Improved on-site efficiency through factory surface preparation and reduced environmental impacts by preventing the scattering of abrasives. Drainage treatment facilities were also introduced with consideration for the environmentally protected area, preventing contaminated water from flowing into the river and promoting environmental conservation.
  • Proactively provided internships and site tours for university and high school students from Romania and abroad.
  • Promoted human resource development through the employment of local personnel and the dispatch of engineers, while developing international personnel through continued employment.
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Macau LRT Barra Extension Project

Project Overview

  • Macau is a major tourist destination welcoming more than 40 million visitors annually and faces chronic traffic congestion. In 2019, MHI delivered a fully automated, driverless transit system and rolling stock for the Taipa Line, which connects major destinations across Taipa Island—including the airport and ferry terminal—where numerous large resort hotels are located.
  • The project extended the Taipa Line by approximately 3.2 km to Barra Station by installing a dedicated LRT lane within the existing Sai Van Bridge between Taipa Island and the historic Macau Peninsula on the opposite bank. Opening of the Barra Extension further improved transport convenience and helped alleviate traffic congestion.

Data

Construction Period: September 2021 – October 2023
Applicant: Mitsubishi Heavy Industries, Ltd.
The Client: Public Works Bureau of the Macao Special Administrative Region Government (DSOP)
The Consultant: Mitsubishi Heavy Industries, Ltd.
The Contractor: Mitsubishi Heavy Industries, Ltd.
Operation and Maintenance: Macao Light Rapid Transit Corporation, Limited (MLM)

Highly Evaluated Points

  • Worked smoothly with two local companies while mitigating project risks and completed the project three weeks ahead of the contractual delivery schedule.
  • Introduced a regenerative energy storage system, reusing regenerative braking energy to achieve energy savings and reduce electricity consumption.
  • Continued to employ Macanese and third-country personnel with experience from the Taipa Line, completed in 2019.
  • Developed local personnel through Off-JT and OJT and strengthened organizational capability and project execution capacity by promoting outstanding personnel.
  • Expanded collaboration with local companies, leading to the continued award and delivery of subsequent railway projects.
  • Following completion of the Taipa Line, secured a rolling stock overhaul contract in parallel with the extension projects.
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