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Drill & Blast H3 Exploratory Tunnel Honolulu, HI |
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Hand Tunneling Justice Center Pedestrian Tunnel Seattle, WA |
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Jack & Bore Tunneling Swamp Creek Interceptor Kenmore, WA |
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Micro Tunneling Eastside Interceptor Renton, WA |
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Pilot Tube Hamakua Sewers Honolulu, HI |
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Ramming SR 305 Crossings Poulsbo, WA |
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Road Header H3 Tunnels Honolulu, HI |
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Tunnel Boring Beachwalk Honolulu, HI |
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Concrete Segments Mercer St. Tunnel Seattle, WA |
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16' Tunnel Mercer St. Tunnel Seattle, WA |