Kenchan self-performs bridges, ports, earthworks, paving, marine dredging and structural steel across northern Japan — backed by a 142-machine fleet, an in-house concrete batch plant, and a 0.00 TRIR safety record audited across 38 consecutive projects.
Kenchan holds the highest-tier Construction Business Operator License in five disciplines. Below: the scope each license unlocks, the fleet we bring to it, and the typical contract envelope.
Cast-in-place substructures, segmental superstructures, and seismic retrofits on arterial road and rail corridors — winter pours to −20°C under our cold-weather protocol.
Heavy foundations, equipment pits, reinforced concrete plinths, and grade slabs for power, petrochemical, and food-processing facilities across Hokkaido and northern Tohoku.
Highway and port-side pavement, reinforced embankments, and 85-ton dump-truck haul operations across seismically active zones — including MLIT arterial routes.
Port berth reconstruction, quay-wall sheet piling, suction dredging, and breakwater armour placement along the Hokkaido coast and Aomori Sea of Japan shoreline.
One of the largest privately held heavy equipment fleets in Hokkaido, tracked through the proprietary KENLOG telematics platform. Every unit self-deployed on contract commencement.
Steel erection capacity up to 78 m reach. Tadamasa LC-2080, Kobelco CKE2500, Tadano GR-1000XL.
Cat 777G, Komatsu HD785-7. Winterized engines rated to −30°C continuous operation.
Ø 3.6 m – 7.2 m shield capability. Two Kawasaki and one Herrenknecht unit, crewed in-house.
24/7 output, 800 m³/day peak. Adjacent aggregate quarry eliminates supply-chain risk.
“Zero lost-time is not a slogan. It is a procurement-grade risk reduction. Every step, every lift, every pour is engineered before the crew arrives — and every supervisor has the authority to stop work without justification.”
A Class A civil engineering scope awarded by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT): full seismic retrofit of the Oshima Bridge approach spans and main pier, executed under live traffic. Scope included bearing replacement, damper installation, substructure jacketing, and post-tensioning across nine piers.
Send the bid notice, scope summary, and contract envelope to [email protected], or use the structured intake below. We mobilize across Hokkaido, Aomori, and northern Tohoku.
Bid notice · Scope · Drawings · Contract envelope · Site access constraints. NDA available on request.
[email protected] →Our 48 licensed 1-kyu engineers and 14 registered professional engineers review scope against fleet capacity, schedule windows, and seismically active zones.
Director-level call with the project owner to align on schedule, cold-weather protocol, self-perform boundaries, and commercial envelope.
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