Ada County Highway District

Ada County Highway District Hours of Operation

The Ada County Highway District main office is open from 8 a.m. to 4:30 p.m., Monday through Friday, except for designated holidays.

For 2023, the District's holidays are:

  • Monday, January 2 -- New Year’s Day (Observed)
  • Monday, January 16 -- Martin Luther King Day
  • Monday, February 20 -- President's Day
  • Monday, May 29 -- Memorial Day
  • Monday, June 19 -- Juneteenth Day
  • Tuesday, July 4 -- Independence Day
  • Monday, September 4 -- Labor Day
  • Friday, November 10* -- Veterans Day
  • Thursday, November 23 -- Thanksgiving Day
  • Friday, November 24 -- Day after Thanksgiving
  • Tuesday, December 26* -- Christmas Eve (Observed)
  • Monday, December 25 -- Christmas Day

ACHD has specialists on-call around the clock to deal with signal malfunctions, missing or damaged signs and any other issue involving the local road network. If you need assistance or to report a problem at a time outside of normal business hours, please call the Ada County Sheriff's Dispatch's non-emergency number at 208-377-6790.

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