Aging under Harsh Use ConditionsAging under Harsh Use ConditionsDaily traffic volume (FY2019 actual records) 1 million vehicles Aging under Harsh Use Conditions Current status of the Metropolitan ExpresswayDaily traffic volume (FY2019 actual records) 1 million vehicles Aging under Harsh Use Conditions Current status of the Metropolitan Expressway

AgingAging

The Metropolitan Expressway network has a total length of about 327.2 km. About 40% (about 139 km) of the lines have been open for over 40 years, and over 60% (about 217 km) have been open for more than 30 years, meaning that the roads are aging.

Number of years since opening Number of years since opening

Aging under harsh use conditionsAging under harsh use conditions

There is a large volume of vehicle traffic, and the daily traffic volume has increased to approximately 1 million vehicles. In addition, the traffic volume of large size vehicles is about five times that of local roads in Tokyo's 23 wards, and they are exposed to harsh use conditions.

Traffic volume comparison for large size vehicles Traffic volume comparison for large size vehicles

At this rate...

Frequent traffic disturbancesFrequent traffic disturbances

There are 48,800 repairs annually due to damage.
As structures continue to age, there is concern that the number of repairs will also increase.

image
That's why we need
The Shutoko renewal project Large-scale renewal and repair project The Shutoko renewal project Large-scale renewal and repair project