Ada County Highway District

Ada County Highway District Our Locations

In April 2019, The Ada County Highway District opened a new location for the Development & Technical Services Division, at 1301 N. Orchard Street. The new Orchard location includes:

  • Development Services
  • Design and Survey
  • Construction and Permits
  • Traffic Engineering
  • Environmental

Both the ACHD Headquarters and Orchard Offices are open from 8 a.m. to 4:30 p.m., Monday through Friday, except for designated holidays.


ACHD Headquarters:
3775 Adams St.
Garden City, ID 83714
NEW  Orchard Address:
1301 N. Orchard St. (Suite 200)
Boise, ID 83706

For additional information:


ACHD Main Line: 208-387-6100
Development & Technichal Services:  208-387-6170
Or contact us at: Tell Us

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