Sidewalks & Flatwork
Walks, pads and flatwork placed on a prepared base, with joints cut where the slab wants to move rather than where it looks tidy.

Sidewalks, slabs, curb ramps and flatwork built for freeze-thaw — for property owners, cities, counties and school districts.
Concrete fails in Wyoming for one reason more than any other: water gets in, then freezes. Water expands by roughly nine percent when it freezes, per the US Geological Survey; a slab poured too thin or finished too wet cracks through its first few winters. What decides whether flatwork lasts is the base, the thickness, and where the joints go.
Gregco Roofing & Construction has poured flatwork across southwest Wyoming for public agencies and private owners since 2011. That work runs to ADA curb ramps for a city, sidewalk replacement for a school district, and walkway renovation for a parks department — the kind of scope that has to pass an inspection rather than just look right on the day.
Public references include 27 ADA curb ramps — City of Kemmerer, WYDOT-administered, completed June 2016; Mountain View High School sidewalk replacement — Uinta County School District 4, completed May 2018; and Bear River Walkway renovation — City of Evanston, completed May 2024.
We document. You decide.
Sidewalks & Flatwork, ADA Curb Ramps, Slabs & Driveways, and Public Bid Work — each explained below.
Walks, pads and flatwork placed on a prepared base, with joints cut where the slab wants to move rather than where it looks tidy.
Curb ramps built to the slope, landing and detectable-warning requirements an inspection checks against.
Residential and light commercial slabs, sized and reinforced for the loads and the frost depth they actually face.
Flatwork delivered under a public bid schedule, with the documentation and coordination that comes with it.
Four steps, always in the same order: site visit, written scope, we do the work, photo record.
Wyoming property owners ask 13 questions most often about concrete — answered here in plain language.
Freeze-thaw. Water soaks into the slab or collects under it, freezes, expands, and lifts. At the elevations Gregco works, that cycle repeats through most of the winter rather than a handful of times a year. The base preparation and the joint layout matter more here than they do in a milder climate, because they decide where the movement goes.
Yes. Gregco bids public flatwork for cities, counties and school districts across Wyoming, and mobilises to the job site for work outside the Evanston area. The bid package is requested from the project owner and submitted against — the same way any contractor on the list does.
Often, yes. If the base under a failed panel is sound and the surrounding slab is not moving, replacing the affected panels is the practical option. The site visit is what tells us which of those is true, and we show you what we find before recommending either.
Cold-weather concreting means placing concrete when temperature threatens the set. The American Concrete Institute defines cold-weather conditions as air temperatures at or below 40°F during the protection period, which calls for heated materials, blankets or an insulated cover. Gregco plans the pour and the protection around the forecast, not the calendar.
Curing is the controlled period when fresh concrete gains strength. Foot traffic usually waits a few days; vehicles wait longer. The American Concrete Institute measures design compressive strength at 28 days and recommends curing most slabs for at least seven days, so a new driveway is not a parking spot in week one.
Control joints are cut lines that decide where a slab cracks. The American Concrete Institute's jointing guidance spaces them at roughly 24 to 36 times the slab thickness, so a four-inch patio takes joints every eight to twelve feet. Joints placed by eye rather than by thickness are why slabs crack in the open field.
That is scaling, the top layer breaking away in flakes. It happens when water and deicing chemicals freeze inside concrete that has too little entrained air. The American Concrete Institute calls for air-entrained concrete wherever freeze-thaw exposure is expected, and deicing salts make that exposure worse. A site visit shows whether the damage is surface-deep or structural.
A permit is the local government's approval to build. Rules differ by city and county in Wyoming, and a driveway approach that meets a public street often needs separate approval from the road authority. Check with your city or county building department before scheduling, and Gregco builds to what they require.
Commercial flatwork and municipal flatwork are the same trade. Gregco pours for private commercial property owners as well as for cities, counties and school districts: entry slabs, walkways, loading pads and ADA curb ramps. A business replacing a cracked entry walk gets the same base preparation and jointing decisions as a municipal sidewalk contract.
Compliance is measured, not judged. The US Access Board's public right-of-way guidelines set a maximum running slope of 1:12 for a curb ramp and a maximum cross slope of 1:48, and require a detectable warning surface where the ramp meets the street. Miss one of those and the ramp does not pass.
Public sidewalk work has to keep people moving. The US Access Board's public right-of-way guidelines require an alternate pedestrian access route when a walkway closes, and that route has to be accessible. Gregco phases pours so a route stays open and coordinates closures with the agency running the project.
A flatwork job produces paperwork as well as concrete. Gregco provides a written scope before the pour, covering thickness, base preparation, reinforcement and jointing, and a photo record of the conditions found and the finished work. Public jobs add the submittals and coordination the project owner's bid schedule calls for.
Recent public flatwork, named with completion dates and nothing more. Concrete public works project for the City of Lander — completed October 2025. Concrete public works project for the Town of Bear River — completed October 2024. Contract values stay with the project owners, where public records already hold them.
WYOMING SERVICE AREA
Concrete is available across Evanston, Kemmerer, Cokeville, Rock Springs, Green River, Mountain View, Lyman — every listed city links to its own page.
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Red pins identify communities where Gregco currently accepts service inquiries. The map is for orientation, not a surveyed service boundary.
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