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Japan's expressways are a collection of technologies, expertise, and systems developed over half a century through experience with diverse and complicated topography, weather, and disasters. Japan's expressways have a "Comprehensive Management System" that boasts the world's leading levels of safety and technology.
This section will introduce state-of-the-art expressway technology.
State-of-the-Art Expressway Technology
We have state-of-the-art construction technology to handle diverse construction conditions from urban areas to mountain regions.
Next Generation Road Technology Utilizing IT Technology
ITS(Intelligent Transport System)
We are developing the next generation of roads through activities such as implementation of ITS (Intelligent Transport Systems) that enable us to offer a variety of services.
Bridge Construction Technology to Cope with a Variety of Conditions
We construct bridges for a variety of site conditions, such as bridges between steep mountains or viaducts in cities using economically sound and appropriate methods.
Bridge construction in mountainous region
Viaducts in a metropolitan area
Tunnel Construction to Flexibly Overcome Restrictions of Construction Conditions
We construct tunnels using various construction methods that take into consideration characteristics of the site. We make full use of advanced construction technology to cope with difficult conditions, for example, in urban areas where lifelines and rail intersect various important structures.
Tunnel Construction in Urban Areas (1) Shield Tunnel Excavation
The tunnel is constructed using a shield tunneling machine, in order to suppress impacts on the surrounding urban environment where many buildings stand in high density above ground and public infrastructure, subways, and numerous other facilities are found underground.
Image of construction
using a tunnel shield machine
Tunnel shield machine
Tunnel Construction in Urban Areas (2) Shield Tunnel Expansion Methods Without Open-Cut
The merging/diverging sections of the entrance/exit were constructed using the Shield Tunnel Expansion Methods deep underground without using the open-cut technique from the ground surface.
Image of construction
using shield tunnel expansion Methods
Completed tunnel
Securing Earthwork Quality Unaffected by Land Foundation Characteristics
Even on weak foundations or in landslide-threatened areas, we cam manage earthwork construction by using methods such as stabilization of slopes and appropriate quality control of mounding.
Examples of Construction Using-State-of-the-Art Technologies
Shibakawa Viaduct(Shin-Tomei Expressway)
Shibakawa Viaduct
A construction method has been developed that minimizes the excavated land area even when bridge piers are built on a steep slope. Impact on the natural environment has been reduced, by decreasing the scale of landform changes.
Minatomachi Ramp and Parking Area(Hanshin Expressway)
Minatomachi Ramp and Parking Area
Efficient use of the land is achieved by constructing the ramp and Parking Area as a unified structure with a commercial complex.
Omiodori Bridge (Shin-Meishin Expressway)
Omiodori Bridge
This bridge achieves a structure with superb durability and earthquake resistance by adopting high-strength bars and ultra high performance concrete for the bridge piers.
Tokyo Bay Aqua-Line
Tokyo Bay Aqua-Line
This expressway crosses Tokyo Bay with a bridge and an undersea tunnel.
Japanese Advanced Technologies
