Covered Routes:

The road is 75-100 percent covered. The road may have received some treatment.

Partly Covered Routes:

The road is 50-75 percent covered. The road has received some treatment but still has snow or ice on significant portions.

Mostly Clear Routes:

The road is 50-75 percent clear. The traffic lanes are mostly clear with a small ribbon of snow on the road, and on the shoulders may not be clear.

Plowing Priorities

MoDOT understands that each road is a priority to drivers; however, there are not enough workers or trucks to clear all highways immediately. In order to do the most efficient job that will impact the most drivers, MoDOT has established a plowing order, setting priorities for which roads are cleared first.

Priority 1 (Continuous Operations): All interstates and higher volume highways.

The objective is to have all lanes on these "snow" routes restored to near normal conditions as soon as possible after the end of the storm. To achieve this objective, plowing and/or application of snow and ice control treatments on these routes will be in effect 24 hours per day throughout the storm until this objective is achieved. 

These routes will be prioritized by traffic volume with interstates routes being plowed and treated first.

Priority 2 (Non-Continuous Operations): Lower-volume state numbered or lettered routes.

The objective is to have these routes plowed open to two-way traffic and treated with salt and/or abrasives on hills, curves, intersections and other areas as needed as soon as possible after the end of the storm. These routes will be prioritized by traffic volume.

Priority 3:

After the storm, if necessary, workers will clean up accumulation on shoulders, bridge edges and interchanges during normal working hours.