本州四国連絡高速道路 List of Products and Services

We would like to introduce our "Wide Span Low Position Road Lighting for Bridges." It provides driving assistance with suitable illumination, guiding light, and outer line lighting even in bad weather. We have achieved wide span illumination of 30 meters, one of the longest in the world. Additionally, we have realized a 64% reduction in power consumption, significantly contributing to carbon neutrality. 【Features】 ■ Improved visibility with special LED lenses and complete pro-beam lighting ■ 99% reduction in inspection and maintenance costs *For more details, please download the PDF or feel free to contact us.

• Other lighting fixtures

We are recruiting members for the "Automated Inspection and Repair Technology Development Consortium." In the maintenance and management of the long bridges managed by Honshu-Shikoku Bridge Expressway Company, we aim to enhance a series of processes through collaboration among industry, government, and academia with expertise in robotics, sensing technology, ICT/IoT, artificial intelligence (AI), and innovative materials. The goal is to promote the development, integration, and on-site implementation of technologies to achieve effective long bridge management. We welcome participants from a wide range of fields. Please consider joining us. 【Benefits of Membership (Excerpt)】 ■ Acquisition of insights into specific on-site needs for bridge/long bridge maintenance management ■ Provision of trial construction and demonstration fields ■ Press releases and technology introductions on our company website ■ Recognition of achievements when applying for proposals in other businesses (endorsement) ■ Participation in academic conferences and paper submissions in collaboration with our company *For more details, please refer to the PDF document or feel free to contact us.

• others

The welded joints of the steel deck slab, which directly bear the load of the vehicle, may suffer damage due to fatigue and other factors. Traditionally, repairs for through cracks in the weld bead joining the deck plate and U-rib have involved "re-welding" or "high-strength bolt plates," but these methods have presented challenges such as concerns about cracks and the need for traffic regulation. The developed construction method addresses these issues, allowing for efficient repairs from the underside without impacting traffic. 【Features】 ■ Repair method using TRS with backing plates - Joins backing plates to the deck plate and U-rib using TRS - Enables efficient repairs from the underside without removing the pavement - Effective for preventive maintenance of deck plate cracks - Patent No. 6341897 *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

This document introduces the effects of the Honshu-Shikoku Bridge using graphs and other materials. It includes "the changes in transportation between Honshu and Shikoku," such as the number of users of the Honshu-Shikoku Expressway, as well as "economic effects" and examples of "infrastructure effects" related to daily life, agricultural and marine products, manufacturing and logistics, tourism, and emergency and disaster response. Our company contributes to the development of the economy and improvement of living standards by maintaining the world-renowned bridge that connects Honshu and Shikoku, promoting the exchange of people and goods, and fostering regional collaboration. Additionally, we will utilize the construction and management technologies for bridges that we have developed over the years to contribute broadly to society. [Contents] ■ Introduction ■ Changes in Transportation between Honshu and Shikoku ■ Economic Effects ■ Examples of Infrastructure Effects *For more details, please refer to the PDF document or feel free to contact us.

• others

Our company has developed a non-destructive testing technology that uses infrared thermography to measure the surface temperature of steel materials, addressing the challenges of traditional inspection methods and enabling efficient and high-precision crack detection. When the road surface is exposed to sunlight and the pavement is heated, that heat is transmitted to the U-ribs through the steel deck plates. If there is a crack in the weld joint connecting the deck plate and the U-rib, the gap (air layer) at the crack interrupts heat conduction, resulting in a temperature gap before and after the crack. By detecting this temperature gap using infrared thermography, it has become possible to discover cracks in the steel without removing the paint. 【Features】 ■ Non-destructive testing technology using infrared thermography ■ Inspection while continuously capturing images longitudinally from a distance ■ Efficient and high-precision crack detection without removing paint *For more details, please download the PDF or feel free to contact us.

• Non-destructive testing
• Renovation and repair methods