1. Bridge Engineer, Design Section, Takigami Steel Construction, 1-1, Shinmei-cho, Handa, Aichi, 475-0826, Japan; formerly, Graduate student, Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464-0863, Japan (corresponding author). E-mail: yasamol@takigami-grp.jp
2. Professor Emeritus, Dept. of Environmental Engineering and Architecture, Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464-0863, Japan, and Senior Advisor, Central Nippon Highway Engineering Nagoya, Co. Ltd., Nishiki, Naka-ku, Nagoya, 460-0003, Japan
3. Assistant Professor, Dept. of Urban Management, Kyoto Univ., Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8540, Japan; formerly, Assistant Professor, Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464-0863, Japan