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 2019, the District's holidays are:

  • Tuesday, January 1 -- New Year’s Day
  • Monday, February 18 -- President's Day
  • Monday, May 27 -- Memorial Day
  • Thursday, July 4 -- Independence Day
  • Monday, September 2 -- Labor Day
  • Monday, November 11 -- Veterans Day (Observed)
  • Thursday, November 28 -- Thanksgiving Day
  • Friday, November 29 -- Day after Thanksgiving
  • Tuesday, December 24 -- Christmas Eve
  • Wednesday, 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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