Abstract
Because the Mid Niigata Earthquake in 2004 occurred at the local and mountainous regions, the highway facilities such as road embankments and road slopes were damaged severely and the road performance were interrupted at many sites. For future earthquake disaster prevention, it is very important to clarify the characteristics of damage factor, damage level and road performance induced by earthquakes.
This study conducts to estimate the characteristics of damage level of road facilities such as embankment, slope and bridge and the regulation of road traffic after the earthquake based on the data obtained by field investigation and other references. Several effective lessons on the damage level and road performance just after the earthquake can be obtained in this study.
