ADA Ramps & Compliance in Liberty, MO

An ADA ramp in Liberty, MO passes when the running slope stays at or under 1:12, the cross slope under 1:48, and the clear width at 36 inches or wider, with level landings at the top and bottom — the federal 2010 ADA Standards, confirmed with a digital level rather than an eye.

Liberty is a Clay County seat that lives in two eras at once: a 19th-century downtown built around Historic Liberty Square, and a 2018-to-2024 logistics-and-retail boom out along MO-152 and I-35. Each one hands us a different ramp problem, and the ground under both is the same swelling Clay County clay that keeps a landing from staying put.

Liberty sits on the same Wymore and Ladoga clay that runs through Clay County — it swells when it takes on water and shrinks when it dries, and it does that season after season. Under a ramp, that movement tips a landing, opens a lip at the grade break where the run meets the gutter, and pushes a slope that started compliant back over tolerance within a few winters.

We stabilize and drain the subgrade so water is not sitting under the slab driving the clay, then set the run with margin to absorb the movement that remains. Our Kansas City soil guide lays out the ground across the metro, and it is why we never pour a Liberty ramp right at the limit.

Liberty moves its heaviest pedestrian loads at the Liberty Hospital campus and across William Jewell College, and at both the standard is the whole route, not one ramp. Someone has to get from an accessible stall across the lot to the door without a slope or a lip stopping them — and at a hospital, that margin is not optional.

We map the path, place the curb ramp where people actually walk, and hold every reading below the maximum from stall to entrance. On an institutional campus with aging private drives, we phase the work so an entrance stays open while we rebuild the route beside it. Related campus work shows up in our Kearney and Smithville projects across the Northland.

Out at Liberty Commerce Center and the Amazon and Hallmark access roads, the ramp problem changes shape — heavy Class 8 turning movements load the subbase at industrial entrances hard enough to pull fresh ramps out of level. A ramp there has to be built for both the axle load beside it and the freeze-thaw and de-icing salt that come every winter.

We place air-entrained 4,000-PSI concrete, broom a slip-resistant texture into the run, seal the joints against salt, and stabilize the base so neither the trucks nor the clay drive the grade break apart. Built that way, a Liberty ramp holds its numbers for years. Start with the ADA ramp service. Ford holds a 4.9 rating on Google across 29 reviews.