Road No. 7, East Region, Urayasu
2008 / Chiba / Groundwork
Hirouchi, Hokkaido Odan Expressway
2007 / Hokkaido / Civil engineering
Kamishinano, Tokai-Kanjo Expressway
2005 / Aichi / Civil engineering
Shirakawa-go Interchange, Tokai-Hokuriku Expressway
2002 / Gifu / Civil engineering