2016 Mushino District Tunnel Detailed Design Project[MLIT Nagaoka Office]
2014 Yokosuka District Tunnel Detailed Design Project[MLIT Yokohama Office]
2012 Mikuni Tunnel Technical Study Project[MLIT Takasaki Office]
2011 Kanazawatokan Gosho Tunnel Detailed Design Project[MLIT Takasaki Office]
2009 Shimobara Improved Tunnel Detailed Corrected Design[MLIT Takayama Office]
No.156 Gifu East BP Iwata Mountain Tunnel Detailed Design[MLIT Gifu Office]
Ayado Bypass Tunnel Detailed Design[MLIT Takasaki Office]
Toga Dam Construction Road Tunnel Design[MLIT Toga Dam Office]
Shimosuwa Okaya BP Tunnel Preliminary Design[MLIT Nagano Office]
Yamakoshi Tunnel Detailed Design[MLIT Nagaoka Office]
No.20 Sasago Tunnel Scheme of Execution Study[MLIT Kofu Office]
Gamagori Bypass Tunnel Preliminary Design[MLIT Meishi Office]