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| Order By | Project Name | Period | Country | ||
| Taisei Corporation | Bosphorus crossing railway tunnel repair work | 2017 | - | 2018 | Turkey |
| Shimizu Corporation | Jakarta Subway Project | 2015 | - | 2015 | Indonesia |
| Taisei Corporation | Bosporus Channel Crossing Railway Project | 2013 | - | 2013 | Turkey |
| Taisei Corporation | Yas Island south tunnel construction | 2008 | - | 2009 | United Arab Emirates |
| Oriental Consultants Co., Ltd. | Bosporus Channel Crossing Railway Project | 2007 | - | 2008 | Turkey |
| Taisei Corporation (Cojaal) | Algeria East and West highway Project (C-5/Tunnel construction) | 2007 | - | 2008 | Algeria |
| Taisei Corporation | Damascus Water Transmission Tunnels Rehabilitation Project | 2006 | - | 2006 | Syrian |
| Taisei Corporation | Bosporus Channel Crossing Railway Project | 2005 | - | 2008 | Turkey |
| Taisei Corporation | Dubai undersea tunnel Project | 2005 | - | 2007 | United Arab Emirates |
| Taisei Corporation | Purulia Pumped Hydro Electric Project(Tunnel work) | 2002 | - | 2004 | India |
| Hazama Corporation | Hai Van Tunnel Project | 2001 | - | 2001 | Viet-Nam |
| Taisei Corporation | Indus highway tunnel project | 1999 | - | 2002 | Pakistan |
| Taisei Corporation | Way Sekampung Irrigation Project | 1996 | - | 1997 | Indonesia |
| Hazama Corporation | ＬＲＴ Sheild Project | 1996 | - | 1997 | Malaysia |
| Kajima Corporation | Suez Tunnel Improvement Project | 1994 | - | 1995 | Egypt |
| Hazama Corporation | Samanara wear Diversion Project | 1987 | - | 1988 | Sri Lanka |
| Okumura Corporation | Batang Ai Tunnel Project | 1982 | - | 1982 | Malaysia |
| Taisei-Hazama JV | Asahan-Tanga Hydro Electric Dam Project （Tunnel construction) | 1979 | - | 1982 | Indonesia |
| Hazama Corporation | Temengor Hydro Electric Dam Tunnel Project | 1973 | - | 1975 | Malaysia |