ADA Ramps & Compliance in Lathrop, MO

An ADA ramp in Lathrop passes when the running slope holds at or under 1:12 max running slope, the cross slope stays under 1:48 max cross slope, the clear width runs 36 inches or wider, and a level landing sits at each end — the federal 2010 ADA Standards, measured on the finished pour, not assumed off the plan.

Lathrop is a Clinton County town of about 2,100 with deep agricultural roots — the Mule Capital of the World — set where the I-35 commuter corridor meets MO-116. A town this size still owes every public route the same federal standard, and its accessible work runs from the civic and Main Street core to the growing commercial node at the interstate.

Lathrop's upland ground is glacial-till clay of the Grundy–Wymore association — shrink-swell soil that firms in dry weather and softens when it saturates; per MoDNR mapping this is dissected till-plain clay, not river-bottom ground. Under a ramp it moves with the season and can pull a landing out of tolerance if the base isn't handled.

The agricultural and freight trucks feeding Watkins Motor Lines and the industrial park off MO-116 pound the pavement a ramp ties into, so we build the transition on its own base. We compact and drain the subgrade and isolate the ramp with proper joints so a grade break stays flush, then record an as-built slope check across the run — the same water-first discipline behind good erosion control.