Source) MLIT

Figure II-2-2-3 Publication of Checkup Implementation Status in Each Field

*1 Bridges specified in the Road Act. The total number of bridges within the scope of the inspection: 723,495 (as of December 31, 2014).

*2 Tunnels on roads specified in the Road Act. Total number of tunnels within the scope of the inspection: 10,878 (as of December 31, 2014).

*3 Limited to key port and harbor facilities (mooring facilities, outlying facilities and port transport facilities). The total number of facilities within the scope of the inspection: 42,000.

*4 Facilities to be inspected under the Building Standard Act (sites and structures only). Implementation status of 606 business entities that have facilities within the scope of the inspection (excluding three quake-stricken prefectures and municipalities under then).

*5 Facilities to be inspected under the Building Standard Law (sites and structures only). Total number of facilities within the scope of the inspection: 5,255 facilities.

*6 River management facilities, excluding river embankments (sluicegate dams, locks, floodgates, intake and waste ports for irrigation/drainage pump stations, sluiceways and sluice pipes, and floodwall gates). Total number of facilities within the scope of the inspection: 22,176.

Legend

Coastal levees, aids to navigation: No statutory requirements for frequencies. As a guide, frequencies are indicated by ----. Sewer piping systems, airports, railways: Frequencies to be set by facility manager or entity manager.

*10 Coastal levees in areas within the scope of the life extension programs (embankments, revetments, parapets). Total length within the scope of the inspection: approximately 5,500 km.

*11 Aids to navigation of reinforced concrete structure only (lighthouses, offshore fixed lights, and so on). Total number of aids to navigation within the scope of the inspection: 2,400 (scheduled for completion by FY 2023).

: First year of tallying-up

## Bar Figure Values

Publication of Inspection Results Tallies (Example of annual reports on road maintenance)

## (3) Development and introduction of monitoring technologies

Bracing for the development and introduction of monitoring technologies that provide an efficient insight into the conditions of social infrastructures, the MLIT has directed studies on the field verification of monitoring technologies to match field needs and seeds and to assess and analyze their effectiveness at the Committee for Exploring and Promoting Usage of Social Infrastructure Monitoring Technologies in October 2013. Monitoring technology hopefuls have been sought from the general public since September 2014, and their field verifications, etc. are now underway.

## (4) Development and introduction of robots

The MLIT promotes the development and introduction of robots of practical usefulness that are capable of checking up growing volumes of infrastructures effectively and efficiently while probing disaster sites that are hardly accessible by human beings and expediting recovery quickly and precisely.

## Section 3

## Driving the Social Infrastructure Development

Priority Plans for Social Infrastructure Development are formulated to drive the efficient and prioritized implementation of social infrastructure development projects in accordance with the Act on Priority Plan for Social Infrastructure Development. In September 2015, the Fourth Priority Plan for Social Infrastructure Development (FY 2015–2020) was adopted by a Cabinet decision. The Fourth Plan has the basic principles of maximizing stock effects of social infrastructures in order to address the following four structural issues under severe fiscal constraint: (i) possibly imminent massive earthquakes and increasingly severe weather disasters, (ii) accelerating aging of infrastructures, (iii) battered countryside in association of declining population, and (iv) intensifying international competitions. Based on the basic principles, the Plan aims to ensure selection and concentration on projects whose stock effects are high while pushing forward the effective use (smart use) of existing facilities, as well consolidation and realignment of them. Also, the Plan for the first