Concrete and Site Work in Evansville, Wyoming

Dewatering a trench in Evansville needs a plan for where the water goes before the excavator moves. The Mystery Bridge and U.S. Highway 20 Superfund site in town involves groundwater contamination believed to come from former industrial operations, and that history shapes how we dig, stockpile, pump and haul on nearby lots. We build slabs, pads, containment, yards and utility service lines here, and we do it with the owner's environmental information in hand and a written plan for soil and water before we break ground.

Evansville sits at 5,125 feet, grew from 2,544 residents in 2010 to 2,746 in 2020 and belongs to the Casper metropolitan area. The surviving refinery in the Casper area is here, so a good share of the concrete demand comes from industrial owners, service yards and the contractors who support them. Others are small commercial owners on the highway frontage who need a shop floor, a truck apron or a parking lot. For all of them the questions are the same: what is in the ground, how deep is the water, and how fast can we get a clean slab down.

Working near known groundwater contamination

We are not environmental consultants and we do not pretend to be. The owner's consultant decides what testing a parcel needs. Our job is to make that plan work in the field. Before excavation we ask for any available soil and groundwater data, mark which spoil is clean and which is held, and set up lined or covered stockpile areas with a clear route out. Water pulled from a trench is not discharged to a storm inlet or a ditch unless the right party has approved it in writing.

Crews get the site's hazard information at the start of every shift: what to avoid touching, where to wash, where vehicles are cleaned before they leave. We keep trucks off soft ground with stabilized haul lanes and keep sediment on site with controls described in our work on erosion control and stormwater plans. Where water is likely, we plan dewatering pumps and storage before it is needed, since the cheapest pump is the one sized correctly the first time.

A refinery town with a short list of corridors

The refinery in Evansville is the area's surviving one, and it supports a ring of service, fabrication and trucking yards around it. US 20, 26 and 87 leave I-25 at Beverly Street in Casper and continue east along Yellowstone Highway through Evansville toward Glenrock, with Wyoming 258 (Curtis Street) providing access back to the interstate. That single corridor carries heavy haul, concrete trucks and commuter traffic at once, so traffic control and delivery timing matter.

Oil and gas buyers drive much of the work, from yard slabs to equipment pads. See how we serve oil, gas and midstream owners, and look at east Casper industrial ground next door for process-side concrete like foundations and curbed pads. A lot of our Evansville work is repeat visits to the same few sites, which is why we keep notes on subgrade, water and access for each one.

Slabs and pads on industrial ground

Our approach starts below the slab. We proof-roll the subgrade, cut out soft or organic material, and rebuild it with compacted fill in lifts. Where the owner wants a vapor barrier or a separation fabric because of what the ground might contain, we detail it with sealed laps and protected edges so it survives the rebar crew. Thickened edges, doweled joints and reinforcement are sized for the equipment that will run on the floor, not for a generic parking lot.

Fuel, oil and chemical storage need containment pads with sealed joints, sloped to a sump, and curing that gives the surface time to harden before it holds liquid. We test slump and air at the truck, cast cylinders for strength verification and cure under cover when the weather turns. These are habits, not extras, and they show up in the price.

Local permits and unclear boundaries

Wyoming does not have a single statewide building code. Codes are adopted and enforced locally by cities, counties and towns, and requirements differ by jurisdiction. For Evansville that means we confirm early whether the town or Natrona County reviews a given parcel, what code edition applies, and what frost depth the reviewer expects. Casper's published frost line is three feet to the top of footing, which is a useful reference, but we design to the number the reviewing office publishes for your site.

Commercial permits usually ask for engineered site and building drawings, and sites near contaminated groundwater may add environmental conditions. Build that review time into the schedule, then let the sequence follow. We would rather lose a week to paperwork than lose a month to a stop-work call.

What gets built on the highway frontage

The corridor suits truck terminals and cross-dock yards, where heavy axle loads call for thick rigid pavement and dock aprons that do not rut. It also suits pre-engineered metal buildings for shops and warehouses: anchor bolt layout, slab edge details and the pour sequence have to match what the building erector expects. We coordinate those before forming starts.

For smaller owners, the same discipline applies at a smaller scale. A 40-by-60 shop floor with a drain, a slope to the door and a thickened edge is still layout work, and we do the layout before the truck arrives. The construction trade partners also take on neighboring work in Mills when schedules overlap.

Plan your Evansville project

Share the parcel, the scope and any environmental reports you already hold. We will respond with a water and soil handling plan, a schedule and a price. Call or send the form for your Evansville project.

Questions Owners Ask

Can you excavate on a lot near the Superfund area?

Yes, with preparation. We ask for the owner's environmental data, plan stockpile and haul controls and have a written water plan before digging. The owner's consultant decides whether testing or special handling applies to a given parcel, and we follow that direction on site.

What happens to water pumped from a trench in Evansville?

It does not go to a storm drain or ditch unless the proper party has approved it. We plan storage, filtration or hauling based on what the owner's plan allows, and we size pumps for the likely inflow so the trench is not open longer than it has to be.

Which codes apply to a commercial building in Evansville?

Wyoming adopts codes locally, so the reviewing office, town or county, sets the edition and amendments for your project. We confirm that before pricing and match foundation depth to the number the reviewer publishes.

Do you pour containment for fuel or chemical storage?

We do. Containment pads are formed with sloped surfaces, sealed joints and a sump, and the concrete is cured and allowed to harden before it is placed in service. The design should come from the owner's engineer and the applicable spill rules.

How quickly can you turn a small shop floor?

A simple shop floor goes quickly once the pad is prepared and the weather cooperates. The slowest parts are usually permit review and subgrade correction, not the pour itself, so we start with the site visit and a short written scope.

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