Utility trenching for water, sewer, and power lines.
Water, sewer, gas, electrical, and communications lines installed to grade in Festus, MO and surrounding counties. We locate and daylight existing underground utilities before we trench. Coordinated with municipalities and utility partners. Licensed, bonded, insured.
Licensed & Bonded
Trenching is
the easy part.
A utility line that isn't at grade fails. We run laser-verified grades on every installation, coordinate with AHJ (authority having jurisdiction) on each utility type, and document every run before backfill. You get a record of what's underground and where.
Grade verification is the job. The trench is just how we get there. We've been running utility installs in Jefferson County and surrounding areas since 2019 — and we've built relationships with the municipalities, inspectors, and utility companies that sign off on this work.
"Grade verification is the job. The trench is just how we get there."
Four stages,
documented throughout.
Every utility run we do follows the same four-stage process — because a missed step underground doesn't show up until you're digging it back up.
Coordination
Utility type, depth requirements, AHJ coordination, and permit pull confirmed before mobilization. Nothing moves until the paperwork is in order.
Locate & Layout
811 locates completed, existing utilities marked, trench route staked. Conflicts identified and resolved before the first bucket goes in the ground.
Trench & Install
Grade-verified trench dug to spec. Pipe bedding, installation, and initial backfill completed to code. Laser grade checked at every run.
Documentation
As-built measurements, photos, and any required inspections signed off before final backfill. You get a complete record of what's in the ground.
Six utility types
we install.
We run all major utility types — each with its own depth requirements, bedding spec, and inspection process. We know them all.
Water Lines
Domestic water service and fire suppression lines. Proper bedding, thrust blocking, and pressure testing on every install.
Sanitary Sewer
Gravity sewer and force main installs. Grade-critical runs verified with laser transit. Mandrel testing and CCTV available on request.
Natural Gas
Service and distribution gas line installation coordinated with the utility provider. Tracer wire, locating tape, and pressure testing included.
Electrical Conduit
Underground conduit runs for power distribution, site lighting, and service feeds. PVC and rigid conduit, single and multi-duct.
Communications
Fiber optic, coaxial, and communications conduit runs. Directional bore available for road crossings and obstacle avoidance.
Storm Drainage
Storm sewer, catch basins, and drainage structure installation. Grade-verified for positive flow. Rip-rap and outlet protection installed to plan.
Documented
before backfill.
We don't backfill until we have photos, measurements, and inspector sign-off in hand. Every run gets documented — because what's underground is underground for decades.
We coordinate directly with Jefferson County, the City of Festus, and all major utility partners. We identify the permit applicant, inspection requirements, fees, and utility coordination in the agreed scope.
"You get a record of what's in the ground, where it is, and what depth it's running at."
J1S Contracting — Festus, MO · Est. 2019Every run,
by the numbers.
What you can expect on every utility trenching job we run.
Trench routes, backfill,
and utility coordination.
These are the questions we get from GCs, developers, and property owners before scheduling utility trench work.
Do you pull permits for utility work?
Yes, when the work requires it. Permit requirements vary by utility type, jurisdiction, and whether you're working in a public right-of-way. We handle the permit pull for our scope of work as part of the project — we don't hand you a list and ask you to figure it out. If your GC is managing permits, we coordinate directly with them.
What utility types do you install?
We install domestic and fire suppression water lines, sanitary sewer (gravity and force main), natural gas service and distribution, underground electrical conduit, communications conduit (fiber, coax, multi-duct), and storm drainage. If you're not sure whether your utility type falls within our scope, call us — we'll tell you straight.
How deep can you trench?
Standard depth on our equipment is 15 feet. Most utility installations in our region fall within 4 to 12 feet, so we're well within operating range on typical jobs. Deeper work requires shoring or trench boxes, which we carry and deploy when depth dictates it.
Do you coordinate with the utility companies?
Yes. For gas, electric, and water tie-ins, we coordinate directly with the serving utility or their contractor. We know the inspection requirements and the people who sign off on this work in Jefferson County and the surrounding service territories. That coordination is part of our process, not an extra you manage separately.
What documentation do you provide after installation?
Agree on the required closeout records before work starts: measurements, photographs, grade readings, and inspection sign-offs may be needed. For projects that require it (LEED, government, municipal), we can provide additional manifests or record drawings. We document before backfill — not after the fact.
Set the route before opening the trench.
Send the route, utility type, required elevations, and the installer’s specification. Tell us about known crossings, existing pavement, and access restrictions. Confirm who supplies and installs the line, arranges inspections, and handles backfill and surface restoration.
- Expose utility crossings before trenching
- Utility trench planning guide
- What marks and physical exposure tell you
Tell us what
needs to go in the ground.
Send us the utility type, the run length, and the site address. We’ll review locating, permitting, access, and scheduling responsibilities with you.
Trenching questions,
plain answers.
How deep does a utility trench need to be?
Required trench depth depends on the utility type and local code. In Missouri, the general minimums are: water service lines — 42 inches below grade (frost depth protection); natural gas — 24 inches minimum; electric conduit — 24 inches for residential; fiber and telecom — 18–24 inches. Always verify with the local utility and the relevant code for your jurisdiction before starting — requirements vary by municipality.
Do I need to call 811 before trenching?
Yes — calling 811 before any dig is required by Missouri law, not optional. Call at least 3 business days before your planned dig date. Utilities will mark the approximate location of their lines with paint or flags. We call 811 on every job, but we also recommend hydrovac confirmation within two feet of any marked utility, which is Missouri’s hand-dig zone, rather than relying on paint marks alone — locates are approximate, not exact.
What is the difference between a utility trench and a sewer trench?
The trench itself is the same concept — a cut in the ground to install a pipe or conduit. The difference is the specification: sewer trenches require specific bedding material (typically clean stone or sand), precise fall/grade for gravity flow, and inspections at tie-in points. Standard utility trenches for electric or telecom can often use native material as backfill. We handle both and coordinate with the relevant utility or inspector as needed.
How long does utility trenching take?
A residential utility trench — say, a 150-foot run for a water service or electric conduit — typically takes half a day to a full day including backfill. Longer commercial runs, rock conditions, and urban sites with multiple utility conflicts extend that timeline. We quote turnaround time on every job based on length, depth, soil conditions, and access — so you know before we start.
What material should be used to backfill a utility trench?
Bedding material directly around the pipe (typically 6 inches below and 12 inches above) is usually clean stone or coarse sand — it protects the pipe and allows minor settling without point loading. Above that, compactable fill — bank run gravel or clean clay fill — is placed in 6–8 inch lifts and mechanically compacted. Under paved or high-load surfaces, higher-quality compacted fill is required to prevent settlement. We match the backfill spec to what the site requires.