A group of parents filed a lawsuit Wednesday seeking ¥890 million in damages from Central Nippon Expressway Co., operator of a tunnel that collapsed in December and killed nine people.
In the suit filed at the Yokohama District Court, the families of five of the nine people killed blamed the operator for failing to repair the aging structure.
The tunnel had not undergone any major work on the ceiling since it opened in 1977. The disaster goaded authorities to inspect aging tunnels across the country.