In NEXCO East Japan, the amount of mowed grass, pruned branches, and the like generated through the maintenance of the expressway exceeds 110,000 m3 every year, and some 93% of the amount is recycled in response to the recent increase in environmental awareness.
In the Kanto Branch Office, the amount of phytogenic material generated by the maintenance of the expressways reaches 50,000 m3, and some 98% of the amount is used to make compost and chips at four greening materials plants.
These compost and chips are used as soil conditioner for trees in expressways under construction, vegetation base material for the afforestation of slopes, and means to prevent weeds from growing in planted areas.
The company aims for the formation of the circulatory system based on the theme "What is caused from the road returns to the road and contributes to the nature growth," and needs to return to the intended purpose of recycling phytogenic material generated from the maintenance of the green belt, instead of discarding it through incineration.