Frost line depth in Platte County, MO

How deep the ground freezes in Platte County, MO

22 in. Dig to 23 in, just below the frost. Nearest NOAA station: Kansas City Intl Ap, 5.9 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.

Code depth · Snow