Winter Road Maintenance Practices

ODOT winter maintenance practices include plowing, sanding and applying winter anti-icing liquid and salt. The combination of practices we use may vary to accommodate the different climate, traffic, and storm conditions.

The service priority map below illustrates how and where we allocate resources during winter storms. For each road in Oregon’s state highway system, we’ve assigned a level of service, level A-E, with A being the highest priority. Generally, roads that carry more traffic have a higher priority. When a severe and widespread storm occurs and our crews are needed everywhere, we’ll focus our resources on level A roads, followed by level B and so on.

ODOT's goal is to improve road conditions during and after a storm. However, the severity and duration of a storm, along with our staff resources, impact how quickly we can respond. For more details visit ODOT's winter maintenance practices page.

Driving in winter isn’t the same as driving at other times of the year. Conditions can change dramatically in just a short period of time or within just a few miles — or even just around the corner. It is always up to you – the motorist – to drive according to conditions, and we want you to be prepared. Before you head out, check the road conditions of your entire route. Focus on driving and limit distractions. Make sure you have supplies in your vehicle, should you get stuck.

Level of Service Definitions

LEVEL OF SERVICE RESOURCE ALLOCATIONS ROAD CONDITION
Overtime Service Hours Pretreat/Anti-ice De-ice Abrasives Accumulation Closure
Level of Service A expected during storm may be used after storm continuous during storm where appropriate where appropriate where appropriate bare pavement as soon as practical open as soon as practical
Level of Service B may be used continuous during storm; may be gaps between shifts trouble spots limited treatment of roadway where appropriate patches of ice, slush, packed snow; bare pavement as soon as practical open as soon as practical
Level of Service C minimized regular shifts; only daylight shifts if resources are limited trouble spots limited treatment of trouble spots trouble spots snow and ice accumulate regularly during storm limited duration
Level of Service D generally not used regular shifts; only daylight shifts if resources are limited generally not generally not trouble spots when resources become available snow and ice accumulate regularly frequently and/or for extended periods
Level of Service E not used daylight shifts if resources available generally not generally not generally not generally plowed once when resources available routinely for extended periods or seasonally

Level of Service Map