Performance of Transportations System in the 2016 Kumamoto Earthquake

Abstract eng:
The April 14 2016 Mw 6.0 (foreshock) and April 16 2016 Mw 7.0 (main shock) earthquakes occurred in Kyushu, the south island, near the City of Kumamoto, Japan. This presentation covers the performance of one of the lifelines – transportations system. Transportations system includes roads, bridges, and railways. Transportations system. With the Aso Volcano located on the North-East of Kumamoto, the mountainous terrain makes it necessary to have many bridges within the road system allowing access across rivers and ravines. The same is true for the railway system. The road system is the responsibility of MLIT (Ministry of Land, Infrastructure, Transportation and Tourism). The ministry has its own control system including telecommunication network that manage the traffic signal system, road and traffic emergence services, build and maintenance of the roads and bridges. Roads and bridges were the hardest hit by the main shock of 16 April. Majority of the damage was due to landslides, and surface ruptures. Figure 1 shows the Aso-Ohashi Bridge collapsed by the enormous landslide. Damage to the road system in this area has significant economic impact to the region, as this is a tourist area. Recovery of major routes was very quick. There are still a number of roads that are being repaired are closed to traffic. However for local residents the ministry provides them with access to their houses (not damaged).

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