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A winter expressway running between snow-covered woods

We build the road
and keep it open.

Taisetsu Line is a civil contractor in Asahikawa and the Kamikawa area: road improvement, bridge repair and snow clearing.

Surface courseBinder courseUpper baseLower baseSubgrade Cut slope Gutter Centre line Crossfall 2%

We build what
you never see.

Under the surface lie the subgrade and the base course. Compact them thick enough and the road wears differently ten years later.

A worker standing with a shovel in front of excavated ground

The machines and tickets behind the work

Motor grader Rotary snow blower Snow dozer 0.7 m³ backhoe Tyre roller Vibratory roller Water truck 10 t dump truck Class 1 civil works site manager Licensed machine operators Certified slingers Excavation work supervisors
Concrete piers standing in a row under a viaduct

No short cuts.

Judge us as much by how we built it as by what we built.

Before we break ground we walk the neighbourhood and the school route and set the order in which traffic moves. The programme is rewritten every week.

We check the moisture of the subgrade before we roll it. On a wet day we do not compact.

Instead of batter boards we dig with satellite-guided machines and keep the finished shape in three dimensions.

The morning starts with a hazard briefing for everyone; the day ends by looking under every machine.

From roads to snow —
four kinds of work.

[ 01/04 ]

Road improvement

Widening and realignment: subgrade replacement, kerbs and gutters, and the paving on top.

[ 02/04 ]

Bridge repair

Deck replacement, bearing renewal and section repair, worked at night under single-lane alternating traffic.

[ 03/04 ]

Snow and ice

Town routes and mountain roads, cleared before the morning commute. De-icer spreading included.

[ 04/04 ]

Earthworks and slopes

Site formation for housing and factories, and slope protection on cuttings. Spoil is reused on site.

Ask for a quoteAsk for a quote

First ones in

Last
ones out

Newly formed ground and a new road seen from directly above

Sometimes we come in late, to a site whose programme has already slipped. We find every place where the drawing and the ground disagree before we start digging.

Meet the crewMeet the crew

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Projects completed

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Building since

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Roads cleared in winter

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People on the payroll

Our work

[ 01/05 ]

Common questionsCommon questions
A road being widened with crushed stone, seen from aboveRoads

●Asahikawa ●Municipal contract

Widening and resurfacing a city road

Road improvementDrainagePaving

We widened a city road that had run out of width and replaced the gutters. It is a school route, so one lane stayed open every morning and evening.

Ask about work like this
Concrete bridge girders and clouds seen from belowBridges

●Kamikawa area ●Municipal contract

Replacing the deck of a river bridge

Bridge repairNight work

The worn deck was replaced overnight and traffic ran again by morning. The temporary falsework was built around the river level.

Ask about work like this
A winter road between snow-covered treesSnow

●Outer Asahikawa ●Season contract

Winter upkeep of a mountain route

Snow clearingDe-icing

From December to March we open the route between night and morning. How much de-icer goes down depends on the air and surface temperature.

Ask about work like this
Flat, newly formed ground surrounded by woodlandEarthworks

●Kamikawa area ●Private main contractor

Forming and draining a factory site

EarthworksSlopesDrainage

We levelled sloping ground and gave the rainwater somewhere to go. The cut material went back into the fill on the same site.

Ask about work like this
A night road lit by a single street lamp, with an arrow markingRoads

●Asahikawa ●Joint venture member

Rebuilding a junction with a new footway

Road improvementPaving

We widened a junction where right-turning traffic backed up and added a footway. The work was split into three sections so no shop entrance was ever blocked.

Ask about work like this

What first-time clients
ask us.

Do you charge for an estimate?

We price the job after seeing it. Within Asahikawa and the Kamikawa area we can give you a rough figure on the spot. There is no charge for the estimate.

Will you take a small job?

Yes — replacing a gutter, surfacing a car park, anything that finishes in a day. Call us and tell us what you have.

Can a private household order snow clearing?

We work by neighbourhood association or by business. A private house is taken on only when it sits on a route we already clear.

I am worried about noise and vibration.

Before we start we call on the neighbours and tell them the working hours. When we are driving piles we let them know the day before.

Can you build in winter?

Paving and compaction lose quality as the temperature drops. From November we only make a temporary reinstatement and finish the job after the thaw.

Where do I find your job openings?

The careers section lists the trades we are hiring and how the work is organised. You can apply with no experience.

We are short of
operators — and of
people who draw.

We build roads and bridges in Asahikawa and Kamikawa. People who joined with no experience and learned to run a machine are the ones running the sites now.

Apply or askApply or ask
Two pairs of hands tying a steel reinforcement cage
A black and white photograph of two workers on a reinforcement mat
An auger screw turning up soil at the head of a drilling rig

[ 01/03 ]

A gravel road running straight through open woodland

For anything
about roads

One number takes both kinds of call: a job to quote, or a job to apply for. Weekdays 8:00–17:00, and through the winter we answer snow calls at night too.

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