Ustick Road, Black Cat Road to Ten Mile Road

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The Ada County Highway District (ACHD) will be reconstructing Ustick Road between Black Cat Road and Ten Mile Road. The purpose of this project is to improve traffic flow and increase safety for all users.

Ustick, Black Cat to Ten Mile

  • Widen Ustick Road to two lanes in each direction, with center turn lanes or center medians at key locations.
  • Construct curb, gutter, and a 10-foot-wide multi-use pathway with a safety buffer on both sides of the roadway for pedestrian and bicyclists.
  • Add a traffic signal at Naomi Avenue.
  • Install an enhanced pedestrian crossing across Ustick Road at the Nine Mile Pathway.
  • Upgrade stormwater facilities and replace irrigation pipes.

Ustick and Black Cat Intersection

  • Widen the Ustick Road and Black Cat Road intersection to include additional through lanes.
  • Add dedicated right and left turn lanes on all approaches.
  • Install curb, gutter, and multi-use pathways.

The Ada County Highway District (ACHD) will be reconstructing Ustick Road between Black Cat Road and Ten Mile Road. The purpose of this project is to improve traffic flow and increase safety for all users.

Ustick, Black Cat to Ten Mile

  • Widen Ustick Road to two lanes in each direction, with center turn lanes or center medians at key locations.
  • Construct curb, gutter, and a 10-foot-wide multi-use pathway with a safety buffer on both sides of the roadway for pedestrian and bicyclists.
  • Add a traffic signal at Naomi Avenue.
  • Install an enhanced pedestrian crossing across Ustick Road at the Nine Mile Pathway.
  • Upgrade stormwater facilities and replace irrigation pipes.

Ustick and Black Cat Intersection

  • Widen the Ustick Road and Black Cat Road intersection to include additional through lanes.
  • Add dedicated right and left turn lanes on all approaches.
  • Install curb, gutter, and multi-use pathways.

  • Detour Map

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  • Construction to start in November

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    In November 2024, the Ada County Highway District (ACHD) will start construction on the Ustick Road, Black Cat Road to Ten Mile Road widening project. Work is expected to be complete in spring of 2026.*

    Traffic and Construction Impacts

    • Ustick Road will remain open throughout construction but may be restricted to one lane in each direction with flaggers.
    • Black Cat Road may be closed periodically as the intersection is reconstructed.
    • ACHD will monitor traffic flow and detour usage and adjust routes as needed.
    • General construction noise, dust, equipment backup alarms and ground vibration.
    • Crews may work from 7 a.m. to 7 p.m. unless otherwise approved.
    • The contractor will work with property owners to minimize construction impacts and maintain access.


    *Due to contractor staffing issues and supply-chain shortages, the construction schedule could change.


  • Spring 2023 Public Outreach

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    The second round of public outreach for this project closed on June 14, 2023. View the infographic and comment summary below!

  • Fall 2022 Public Outreach

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    The first round of public outreach for this project closed on November 3. 2022. View the comment summary below!


Page last updated: 10 Jan 2025, 02:13 PM