Western Construction of Lewiston, Inc.

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Excavation & Mass Grading

From a single building pad to multi-acre mass grading. We own the scrapers, dozers and excavators, so the dirt moves on our schedule.

Excavation done to grade, not to guess

Excavation is the part of a project that everything else sits on. Get it wrong and it shows up later as a cracked slab, a wet basement or a parking lot that ponds every spring. Get it right and nobody ever thinks about it again. That second outcome is the whole job.

We handle mass excavation and earthmoving on large sites, cut-and-fill balancing, structural fill placement and compaction, subgrade preparation, and finish grading to plan tolerance. On sites where the native material will not carry load, we do soil stabilization rather than haul everything off and start over — it is usually faster and it is almost always cheaper.

Big sites and small ones

The equipment list is built for scale: scrapers and dozers for moving volume, excavators and loaders for detail, and compaction equipment sized to the material. That same fleet does residential work. If you need a house pad cut, a driveway built or a shop site levelled, that is a normal week for us — the machines are just smaller that day.

Land clearing and site preparation

Most excavation jobs start with clearing. We take down brush and timber, pull stumps, strip and stockpile topsoil for reuse, and deal with whatever is buried that nobody knew about. Where there are old structures or slabs in the way, demolition is part of the same mobilisation rather than a separate contractor and a separate delay.

Drainage and erosion control

Water is what turns a good grading job into a bad one. Ditching, swales, culverts, detention ponds and erosion control go in as part of the earthwork, not as an afterthought once the ground is already shaped wrong.

WCI equipment fleet on a mass grading and excavation project in the Lewiston area

Scope

What this covers

  • Mass excavation and earthmoving
  • Cut and fill balancing
  • Land clearing and grubbing
  • Topsoil stripping, stockpiling and respread
  • Structural fill and compaction
  • Soil stabilization
  • Subgrade preparation
  • Finish and fine grading
  • Building pads and house pads
  • Driveways and access roads
  • Ditching, swales and culverts
  • Detention ponds and erosion control
  • Demolition and site clearing
  • Trucking and material hauling

Common questions

Questions we get asked

Do you do residential excavation, or only commercial work?

Both. We do house pads, driveways, basements, septic excavation, drainage fixes and shop sites alongside our commercial and industrial work. Small jobs get the same estimator and the same crews.

How much does excavation cost?

It depends almost entirely on how much material moves, what that material is, and how far it has to go. Rock costs more than dirt. A balanced site costs less than one that needs import or export. We would rather walk the site and give you a real number than quote a rate per hour that tells you nothing about the total.

What is soil stabilization and do I need it?

It is treating weak or wet native soil in place — usually with lime or cement — so it will carry load instead of being dug out and replaced. You need it when the material under your building or pavement will not compact. It is normally cheaper and faster than over-excavating and importing structural fill.

Can you work in winter?

Yes, with limits. Frozen ground and saturated soil both change what is possible and what it costs. We will tell you honestly if waiting six weeks will save you money.

Do you haul away the material you dig out?

Yes. We run our own trucks and we can usually find a home for clean material rather than paying to dump it, which comes off your bill.

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Ready to talk about your project?

Tell us what you are building. We will walk the site, scope it honestly, and give you a number you can plan around.