Ada County Highway District

Winter Street Service What happens when it snows?

ACHD generally favors anti-icing, sanding and salting over plowing as the most effective treatment for the county's normal winter conditions. Sand and salt (in targeted applications) are applied when extra traction is needed. When snow accumulates, plowing is done before more anti-icing material is applied.

For a more indepth look into the anti-icing, and sanding and salting materials we use.

More On Anti-Icing


Why a Priority System?

Even with a large fleet of vehicles, the District must use a priority system to ensure that the most-used or most-critical roads get first attention.

Although residential streets are important, they have lower speeds and lower traffic volumes. Given the amount of personnel and equipment available, ACHD must focus its response to yield the biggest benefit. Snow will melt off by the time District crews could practically get onto neighborhood streets.

Priority Roadways


  • Arterial and collector roads
  • Major intersections
  • Overpasses and bridges
  • Areas around hospitals and fire stations
  • School and railroad crossings
  • Streets with grades over 6 percent

Sidewalks and Parking Lots

When it snows residents have a job too. Keeping the sidewalk in front of your home or business clear of snow and ice is required by local and state codes. For additional information about local and state codes, read "Putting Snow in its Place".


For additonal information:


ACHD Main Line: 208-387-6100
Adams Division 208-387-6325
Cloverdale Division 208-387-6350
Or contact us at: Tell Us

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