LEHI TRENCHLESS PIPE BURSTING — KEEP THE LANDSCAPE, REPLACE THE MAIN

Pipe bursting is the trenchless method we use when the line that has to come out is under something you can't afford to destroy — and in Lehi's master-planned communities, that's almost everything. Instead of opening a 60-foot trench and pulling the old pipe out from the top, we excavate two small pits — one at the house and one near the street or city tap — and pull a heavy hydraulic bursting head through the length of the old pipe from one pit to the other.

As the head moves, it expands outward with roughly 30 tons of force. The old pipe — clay, cast iron, Orangeburg, ABS, or PVC — shatters into the soil around it. Directly behind the head, trailing on a cable, is a length of fused HDPE the same diameter or one size up. When the head arrives at the receiving pit, the new pipe is in place, the old pipe is gone, and the 50 feet of yard above is undisturbed.

Where bursting wins big in Lehi

Three scenarios make bursting the obvious choice in Lehi specifically.

First: HOA-spec hardscape. A 30-foot stamped concrete driveway in Skye Estates costs $8,000-$14,000 to cut and repour, plus the ARB approval and inspection cycle that adds weeks. If your sewer main runs under it, open-trench is a $15,000+ job by the time HOA-spec restoration is done. Bursting runs the new pipe under the driveway through the old line — driveway stays, no ARB restoration cycle. You just paid $12,500 instead of $16,000-plus, and you didn't lose two weeks to architectural review.

Second: mature HOA-approved landscape. Traverse Mountain, Holbrook Farms, and Ivory Ridge homes that are 10-15 years old have sewer lines running directly under landscape that the HOA approved years ago — mature trees, planting bed configurations, retaining walls that satisfy current ARB spec. Open-trench means tearing all of that out and re-submitting the new layout for ARB approval. Bursting goes under it without disturbing root balls, footings, or plant material. Restoration cost: zero. ARB cycle: zero.

Third: long bench-side runs. Open-trench gets more expensive per foot the longer the run goes — more dig time, more bedding sand, more backfill, more compaction, more sod, more cobble screening on bench installs. Bursting cost curves flatter with length. On a 120-foot Traverse Mountain main, open-trench might be $13,500 plus $6,000 in HOA-spec landscape restoration vs. $14,800 total for bursting. Easy math.

Where open-trench still wins in Lehi

Old Lehi short runs through soft yard with no HOA. A 40-foot replacement on a Main Street property with no architectural review, no mature landscape, no hardscape — open-trench is $4,800-$7,500 vs. $9,500-$11,500 for bursting. Bursting isn't worth the premium when the restoration cost is minimal and there's no HOA architectural review cycle to dodge. Collapsed or pancaked pipes are also hard to burst — the bursting head needs intact pipe walls to expand against. Severely bellied developer-grade lines can be burst but sometimes fill back in at the bellied section, so we camera-verify before committing.

Lehi-specific bursting considerations

Cobble-clay pushes back. Bench-side soil — Traverse Mountain, Skye Estates, Suncrest-adjacent — has softball-size rocks in clay matrix that resists the bursting head. Our rigs are sized for it: hydraulic static burst heads rated for 50-ton pull force on cobbled ground, not lighter pneumatic units that work fine on California sandy loam. Depth matters too: Lehi sewer mains are often 5-6 feet deep to clear the 30-inch frost line, so bursting pits are hand-shaved below the bursting head's working angle. That's a detail subcontracted crews get wrong.

Blue Stakes Utah 811 is mandatory — same legal requirement as open-trench. We file, wait the 48 business hours, and verify gas, fiber, and water crossings before pits open. If gas crosses the bursting path within 18 inches, we either re-route or switch to hand-dig at that crossing. Never negotiable.

HOA architectural review for the pits themselves: the two pits are typically inside the front yard footprint and the surface restoration is sod or gravel. Most Lehi HOAs accept that with a pre-approval notice rather than a full ARB cycle, but Traverse Mountain and Skye Estates sometimes require formal approval. We file the pack regardless.

What we burst and what we don't

We burst 4-inch residential sewer mains (most common Lehi residential pipe), 6-inch commercial sewer mains on properties with enough access (Thanksgiving Point retail, Silicon Slopes commercial), and — less commonly — 1-inch and 1.25-inch main water supply lines where the homeowner wants minimum disruption. We don't burst pipe that's already collapsed past a certain threshold, lines with too-tight bends, or lines directly under a load-bearing foundation footing. Every potential bursting job starts with camera inspection, written scope, and flat-rate quote that includes both open-trench and bursting pricing.

Pull test before commitment: we run a tracer down the line first and verify the bursting cable can seat the full length. Nothing worse than pitting a Traverse Mountain yard, starting a burst, and finding the pipe offset too badly for the head to progress. Our crews can hand-dig through and re-access if that happens, but we'd rather know before the pits are open.