NEXCO CENTRAL (Central Nippon Expressway Company Limited)

Important Notice

Precautions regarding traffic regulations at the time of the Tokyo 2020 Games and traffic conditions in the Tokyo area

Infrastructure Life Extension Plan (Action Plan)

NEXCO CENTRAL, in November 2013, the relevant ministries and agencies liaison meeting on promotion of measures against aging infrastructure was compiled. Basic plan for extending the life of infrastructure Based on the "NEXCO CENTRAL managed Expressway as a plan to clarify the direction of the medium- to long-term efforts to steadily promote the maintenance and updating such as, 2015 March," NEXCO CENTRAL Infrastructure Longevity Plan (Action Plan) ”(hereinafter referred to as“ Action Plan ”).

Role of Central Nippon Expressway Company Limited

The role of “manager” of infrastructure (maintenance and repair of national Expressway on the basis of the Road Maintenance Special Measures Law)

Plan scope

Target facilities

Road facilities [bridges, tunnels, large structures (sheds, large culverts, pedestrian bridges, gate signs), etc.]

Target period

From 2014 to 2020 (from 2014 to 2020)

Medium to long term cost outlook

NEXCO CENTRAL conducts operations related to maintenance and renewal based on an agreement with the Organization.
Under the current agreement, the implementation of specific renewal work specified in “Ⅵ. Direction of Efforts on Necessary Measures” of this Action Plan and the strengthening of inspections required to switch to preventive maintenance by establishing a maintenance cycle , Which reflects the intensive implementation of repairs.

Direction of action and main contents

Inspection / diagnosis, repair / update, etc.

■ Promotion of maintenance cycle
■ Construction such as specific update
■ Review of tender contract system

[Specific initiatives]

  • ・ Inspection and diagnosis of structures (once / 5 years)
  • ・ Announcement of inspection plan
  • ・ Strengthening of crackdowns on vehicles that violate weight, etc.

Development of standards

■ Maintenance of standards
■ Reflecting new technologies and knowledge in standards

[Specific initiatives]

  • ・ Revision of inspection procedures in accordance with legislation of inspection standards
  • -Measures to prevent damage to third parties, etc., and reflect them in design and construction standards that take into account maintenance

Development and utilization of information infrastructure

■ Efficient collection and accumulation of information
■ Utilization and sharing of information

[Specific initiatives]

  • ・ Reliable recording and utilization of inspection results and repair information in the database
  • ・ Improvement of convenience and versatility of road maintenance information system (RIMS)

Formulation of individual facility plan

■ Formulation of individual facility plans
■ Review the plan formulation and enhance the content

[Specific initiatives]

  • ・ Formulation of plans based on inspection and diagnosis results
  • ・ Construct measures and review plans in line with the progress of the maintenance cycle

Development and introduction of new technologies

■ Development and introduction of new technologies
■ Matching between management needs and technology seeds

[Specific initiatives]

  • ・ Ensuring reliability of inspection / diagnosis technology
  • ・ Development of technologies that contribute to cost reduction, process shortening, and durability improvement (Non-destructive inspection / monitoring technology)

Budget management


[Specific initiatives]

  • ・ Inspection / diagnosis, repair / update based on individual facility plan
  • ・ Development and introduction of new technologies, promotion of maintenance cycle

Building a system

■ Improve the organizational environment to improve the skills of engineers and pass on know-how

[Specific initiatives]

  • ・ Improve the knowledge and technical skills of employees for inspection and repair techniques, and train professionals and technicians who can provide guidance on site. Upgrading skills such as renewal and breakdown repair using training facilities
  • ・ Introduction of qualification system for inspection and diagnosis


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