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Tunnels & Shields

Neyagawa Sewage Pipeline utilizing the Pre-stressed Kawajinkita Tunnel on the Tokyo Bay Crossing Road (Kanagawa, Japan) Jyoshinetsu Highway South Jyoetsu Interchange (Niigata, Japan) Tajikawa Tunnnel

Neyagawa Sewage Pipeline utilizing the Pre-stressed
Pre-cast Concrete Segmental Lining Method (Osaka, Japan)

Kawajinkita Tunnel on the Tokyo Bay Crossing Road (Kanagawa, Japan)

Total Length:2,300m

Jyoshinetsu Highway South Jyoetsu Interchange (Niigata, Japan)

Total Length:3,548m (Tunnel Length:381m)
Excavation Volume: 1,025,000m

Tajikawa Tunnel on Kochi Expressway (Kochi, Japan)

Length 775m
Awaizaka Tunnel Tateiwa Tnnel (Shizuoka, Japan) Midorigaoka rain water sewage pipeline Project SJ43 (1-2) Tunnel Project

Awaizaka Tnnel (Ehime, Japan)

Length 433m

Tateiwa Tnnel (Shizuoka, Japan)

Length 283m

Yokohama City, Midorigaoka Rain Water Sewage Shield Tunnel (Kanagawa, Japan)

Finished diameter 2,000mm, Length 860.5m

SJ43 (1-2) Large-scale Shield Road Tunnel on Metropolitan Expressway Shinjuku Line (Tokyo, Japan)

Finished diameter 11,100mm, Length 1,040m