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Land Excavation in Bozeman, MT

Excavation Done to Code Across Bozeman

Land excavation and grading in Bozeman, MT

Site prep, grading, clearing, and utility trenching run to OSHA and county code, with 811 locates and compaction testing on every dig. Serving Bozeman and the Gallatin Valley.

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  • 811 on every dig
  • OSHA trench-safe crews
  • Licensed and insured

Code & Safety Log

Notes on OSHA trench rules, 811 locates, and the permits that keep a Bozeman dig safe and legal.

Marked utility locates on a Bozeman excavation site

811 and OSHA Rules to Know Before You Dig in Bozeman

July 1, 2026

Excavation looks simple from the road: a machine, a hole, a pile of dirt. The parts that keep a Bozeman project safe and legal happen before the first bucket moves. Here is what every property owner and contractor should know about locates, trench safety, and permits before the digging starts.

Call 811 First, Every Time

811 is the free national Call Before You Dig service, and in Montana it takes about two business days for the utilities to come mark the gas, water, electric, and fiber lines on your parcel. It is not optional, and it is not just for big jobs. A fence-post hole can nick a service line as easily as a basement dig. Once the paint and flags are down, you know where the buried lines run and can dig around them with confidence.

Know the OSHA Trench Rule

The single most important safety number in excavation is five feet. Any trench 5 feet deep or greater must have a protective system under OSHA 29 CFR 1926 Subpart P, which means the walls are sloped back, benched in steps, or held by a trench box. Soil is deceptively heavy, and an unprotected wall can collapse without warning. A competent person has to inspect the excavation daily and again after rain, before anyone steps into it.

Get the Permit and Plan Right

Most excavation in Gallatin County needs a permit, and once a site disturbs one acre or more it needs a Stormwater Pollution Prevention Plan (SWPPP) with silt fence and inlet protection. Larger grading jobs also need a stamped grading plan. Sorting this out first prevents a stop-work order later. Our site preparation and grading crew confirms the permit and the plan before we break ground.

Compact It or Regret It

The dig is only half the job; how you put the dirt back matters just as much. Structural fill should go in controlled lifts and be compacted to 95 percent of maximum dry density, verified with a modified Proctor test (ASTM D1557). Loose backfill settles, and settled backfill cracks slabs and sinks trenches. Testing the fill is cheap insurance against an expensive callback.

When to Bring in a Pro

If your job crosses utilities, goes deeper than a few feet, or needs a permit, it is worth having a code-first crew handle it. Cidnola runs 811, protects the trench, tests the fill, and documents the work so the inspection passes. Have a question about your parcel, or need to contact us about a dig? Call Cidnola at (406) 554-4516 for a free walkthrough in Bozeman.

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How a Permitted, Inspected Dig Proceeds

Every scope below runs through the same disciplined sequence, from the 811 locate to the final density test. This is the excavation work we do across the Gallatin Valley.

  • Site Preparation & Grading

    Topsoil stripping, cut and fill, and rough-to-finish grading to the engineer's plan, establishing pad elevations, drainage slopes, and a compacted subgrade ready to build on.

  • Land Clearing & Grubbing

    Removal of trees, brush, and undergrowth, then grubbing the stumps and roots below grade, with haul-off or on-site mulching to open a wooded or overgrown Bozeman lot.

  • Foundation & Basement Excavation

    Footings, crawl spaces, and full basements dug to plan depth with over-dig for forms, spoil managed off to the side, and a level bearing surface for concrete.

  • Trenching & Utility Excavation

    Water, sewer, gas, and electrical trenches with proper bedding and backfill, protected by sloping, benching, or a trench box in any cut 5 feet or deeper.

  • Drainage & Erosion Control

    Positive slopes away from the structure, swales and French drains, plus silt fence and inlet protection that meet the site's stormwater (SWPPP) requirements.

  • Soil Compaction & Structural Fill

    Engineered fill placed in controlled lifts and compacted to a specified density, commonly 95 percent of maximum dry density verified by a Proctor test.

Costs When the Work Is Done to Spec

Excavation pricing tracks the size of the site, the soil, and how much protection and testing the job requires. The ranges below are typical for the Bozeman area in 2026, and we put a firm number in writing after we walk the parcel. Rock, a high water table, or tight access on an in-town lot near Oak Street can push a job toward the upper end.

Site prep and grading$0.40 to $2.00 per sq ftLand clearing$1,400 to $6,200 per acreUtility trenching$5 to $40 per linear ft
  • Most jobs land near $1.40 per sq ft
  • Includes cut, fill, and finish grading
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  • Light brush low, heavy timber and stumps higher
  • Grubbing and haul-off included
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  • Soft soil low, rocky or deep runs higher
  • Proper bedding and compacted backfill
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Cidnola provides land excavation in Bozeman, MT, with a code-first crew that treats every dig as a job the county inspector will sign off on. We handle site preparation and grading, trenching and utility excavation, foundation and basement excavation, drainage and erosion control, land clearing and grubbing, and structural fill and compaction, matching each scope to the engineer's plan. That range covers a driveway subgrade on Durston Road, a basement footing off Kagy Boulevard, or a full building pad in the 59718 corridor west of town.

Safety is not a slogan painted on our trucks, it is the reason the work holds up. Every trench 5 feet deep or greater gets a protective system, whether that means sloping the walls back, benching, or dropping in a trench box, exactly as OSHA 29 CFR 1926 Subpart P requires. A competent person inspects the excavation daily and again after any rain, and no bucket breaks ground until 811 has marked the gas, water, and fiber lines. In Montana that free locate takes about two business days, so we build it into the schedule instead of gambling on it.

When a wall slumps or a contractor clips an unmarked line, the clock matters. Cidnola keeps a crew on call for cave-ins and utility strikes across Gallatin County, and we can often be on site the same day with shoring, a pump, and the equipment to make the cut safe again. Fast does not mean reckless. We stabilize the hazard, coordinate with the utility if a line is struck near Baxter Lane or anywhere else in town, and document the fix so the reopened dig still passes inspection.

A clean job follows a clean sequence. We pull or confirm the grading permit, strip and stockpile topsoil, then cut and fill to the staked elevations before compacting structural fill in controlled lifts. That fill gets tested to 95 percent of maximum dry density under the modified Proctor method (ASTM D1557), so the pad carries the load it was designed for. Silt fence and inlet protection stay up the whole time to keep runoff out of the storm system, which is what a SWPPP on any site over one acre demands. The last step is finish grading to the drainage slopes, and after that the inspection you are paying for actually passes.

  1. A competent person on siteOSHA-qualified supervision inspects every open excavation daily, not just on the first day of the dig.
  2. 811 before the first bucketWe schedule the free two-day utility locate on every job, so no gas, water, or fiber line gets cut by surprise.
  3. Compaction tested to specStructural fill is placed in lifts and verified to 95 percent Proctor before anything is built on top of it.
  4. Licensed, insured, and localA Bozeman-based crew that stands behind the work and shares credentials on request.

Permitted Work Throughout Gallatin County

Cidnola runs excavation and grading across Bozeman and the surrounding Gallatin Valley, from tight in-town lots to the ranch parcels out along the interstate. Wherever the county permits the work, our crew and equipment can get there.

  • Bozeman, MT (59715, 59717, 59718)
  • Belgrade, MT
  • Four Corners, MT
  • Gallatin Gateway, MT
  • Manhattan, MT
  • Three Forks, MT
  • Livingston, MT
  • Big Sky, MT

Not sure we cover your parcel? Call (406) 554-4516 and we will confirm before you schedule.

Permits, Safety, and Inspection Questions

Do I need to call 811 before any digging on my property?
Yes, and it is the law. A free 811 locate marks the gas, water, electric, and fiber lines before we dig, and in Montana it takes about two business days. We schedule it on every job, from a fence-post hole to a full basement, because hitting an unmarked line is both dangerous and expensive.
How deep can a trench be before OSHA requires protective shoring?
Any trench 5 feet deep or greater needs a protective system under OSHA 29 CFR 1926 Subpart P, which means sloping the walls, benching, or a trench box. Shallower cuts can still fail in unstable soil, so our competent person inspects each excavation daily before anyone steps into it.
Do I need a permit or a grading plan to excavate my site?
Most excavation in Gallatin County needs a permit, and larger projects need a stamped grading plan and a SWPPP once the disturbed area reaches one acre. We help confirm what your parcel requires and pull or verify the permit before we break ground.
What does 95 percent compaction mean and why does it matter?
It means the structural fill is compacted to 95 percent of its maximum dry density, measured against a modified Proctor test (ASTM D1557). Fill placed in controlled lifts and tested to that number carries the load without settling, which is why footings and slabs sit on verified subgrade rather than loose dirt.
How much does it cost to excavate and grade a lot?
Site grading commonly runs $0.40 to $2.00 per square foot, and land clearing $1,400 to $6,200 per acre depending on tree cover. Soil, rock, and access all move the number. We walk the parcel and put a firm written price in front of you before any machine rolls.
What is the difference between rough grading and finish grading?
Rough grading shapes the site to the general elevations and drainage pattern, getting cut and fill close. Finish grading is the final pass that sets the exact slopes and a smooth, compacted surface ready for concrete, sod, or aggregate. Most pads need both steps.
Can you respond to an emergency cave-in or utility strike?
Yes. We keep a crew on call for cave-ins and struck lines across the Bozeman area and can often be on site the same day with shoring and a pump. We stabilize the hazard, coordinate with the utility, and document the fix so the reopened dig still passes inspection.

Schedule a Code-Compliant Dig

Ready to break ground? Call Cidnola and we will walk your parcel, schedule the 811 locate, and put a clear written scope and price in front of you before any machine rolls. From a single utility trench off Oak Street to a full pad with a drainage package, we run the job to code so the inspection is the easy part.

Call (406) 554-4516