Bridge
We develop bridges that are seen by many people and become local landmarks, with designs that are suitable for the site, structures that are easy to maintain and manage, and excellent lifecycle costs.
Urban Facility Design
We provide comprehensive technical services that can be adapted to satisfy diverse needs and complex construction requirements.
Roads
We provide planning, design, and measures, which utilize our comprehensive consulting prowess, for all kinds of road related things, like bridges, tunnels, underground structures, and roads themselves. We also provide environmental, landscape, and soil quality analyses.
Traffic
The smooth interaction of people and things greatly influences local economies. We strive to create transportation networks that are both efficient and effective, are easy for everyone to use, and contribute to the stimulation of local economies.
Urban & Regional Planning
We strive to comprehensively coordinate strategic, dynamic community and regional development efforts that are based on local characteristics, are committed to consensus building with local residents, and provide comfortable living environments that are adaptable to the needs of future generations.
Environment
We strive for regional development that allows society to coexist with nature, as well to continuously grow without putting a major burden on the environment, by taking on both global scale environmental problems, such as global warming, as well the various ones faced by local areas.
Aesthetic Design
For us, thinking up designs is an intellectual production activity, where we select essential themes, apply logic to them, and end up with reasonable solutions. By utilizing designs that combine necessity with amenity, we are able to realize social infrastructure that is both beautiful and functional.
Rivers
We are engaged with creating social infrastructure that can withstand flooding brought about by climate change or earthquakes, to better ensure the safety and security of people's life. We also carry out operations and management (O&M) and renewal of social capital and building rivers with a view toward better river ecology.
Erosion Control
Japan's terrain is about 70% mountains. What's more, between heavy rain, earthquakes and volcanoes, the environment is perfect for landslide disasters. So to better help protect the lives and property of local residents, we offer a rich line of services to create safe living spaces that offer peace of mind.
Geological Disaster Prevention
We deal with solving any geologic or ground issues in the planning, layout and building roads, bridges, tunnels, rivers and erosion control installations. We can also carry out activities to help with O&M, survey and inspection of existing structures, ground and slope disaster prevention, and planning for disaster response.
Tunnel
Japan is a mountainous country, so the future demand for tunnels to build safe roads while changing terrain as little as possible is immeasurable. Our company deals with every part of this, from main and facilities planning to inspection, survey and maintenance plans.
Ports
To promote sustainable social growth, we are engaged with the challenges of protecting human life and national interests by creating countermeasures for natural disasters like mega typhoons brought by global warming and earthquake-caused tsunamis, as well as facilities that can compete on the international stage.
Information and Communications Technology
We offer optimal, user-centered solutions particularly within the construction field for activities like computerizing administration, while leveraging our know-how on improving social infrastructure. We are here to support the move towards an IoT based "ubiquitous society."
Management
In order to bring a smile to communities, we are working to deepen our "management" according to social demands.
Energy
We will provide comprehensive technologies for energy management to realize a sustainable "low-carbon, recycling-oriented society" for conservation of the global environment.
Technology Development
We are developing new technologies to develop and build social infrastructure for the future.
Overseas
As a member of the international community, we provide high-quality technical services in all aspects of the development of social infrastructure, nature disaster preparedness measures, research, planning, design, and construction management.
We develop bridges that are seen by many people and become local landmarks, with designs that are suitable for the site, structures that are easy to maintain and manage, and excellent lifecycle costs.
Imizu City, Toyama Prefecture
Steel PC composite cable-stayed bridge / Bridge length 600m / Main span length360m
Nagoya City, Aichi Prefecture
Steel cable-stayed bridge
Bridge length 758m
Main span length 405m
Ube City, Yamaguchi Prefecture
Steel PC composite cable-stayed bridge / Bridge length 290m / main span length 190m
Imabari City
Ehime Prefecture to Oshima
Bridge length 4105m
Maximum span length 1030m
Onomichi City – Imabari City
Ehime Prefecture
Bridge length 1480m
Span length 890m
Kamiamakusa City
Kumamoto Prefecture
Steel PC composite semi-through arch bridge / Bridge length 465 m / Arch span length 348m
Chuo-ku, Tokyo
Steel semi-through
balanced arch bridge
Bridge length 245m / Arch span length 145m
Adachi-ku, Tokyo
Steel two-layer
Nielsen lohse bridge
Bridge length 141m
Nishihara Cho, Okinawa Prefecture
– Haebaru Cho
Bridge length 830m
Span 39m
Kesennuma City, Miyagi Prefecture
Steel semi-through arch bridge
Bridge length 355m
Arch span length 297m
Miyako-jima City
Okinawa Prefecture
PC 32 span continuous box girder, etc / Bridge length 3.54km / maximum span length 120m
Toyama PrefectureBridge
length 368m
Steel joint diameter φ1.0m
Steel through arch bridge
Kakamigahara City
Gifu Prefecture
10 span continuous girder bridge
Bridge length 594m / Span 60m
Toyama City, Toyama Prefecture
Steel 8 span continuous
box girder bridge
Bridge length 466m
Shimanto City, Kochi Prefecture
Steel continuous steel floor box
girder rigid frame bridge
Bridge length 697m
Nagoya City, Aichi Prefecture
PC 5 span continuous
rigid frame bridge
Bridge length 230m
Kyoto-Jukan Expressway Tamba-Ayabe Road
PC 6 span continuous rigid frame box girder bridge / Bridge length 421m / Maximum span 84m
Nagoya City
Aichi Prefecture
8 span continuous small-number
main girder bridge
Bridge length 374m
Nerima-ku, Tokyo
Sayama City
Saitama Prefecture
Saitama City
Saitama Prefecture
In order to respond to the rapid increase of aging bridges, we carefully conduct the inspection and survey of bridges
We perform soundness assessments to supplement visual inspections, such as damage which is hard to see like fatigue cracks and corrosion damage which is buried in concrete and cannot be seen.