• Contractor has started implementing traffic control on the project and throughout the southern neighborhoods.
• Black Cat Road is closed south of Ustick Road.
• Contractor milling the south half of the road in preparation for utility relocations and temporary pavement.

• Anticipated notice to proceed with construction on Monday, November 11th.

Ustick, Black Cat to Ten Mile Project Begins November 11

ADA COUNTY — Beginning November 11th, work will begin on the Ustick Road, Black Cat to Ten Mile Road project.

Black Cat Road will be closed between Ustick Road and Moon Lake Drive. Only local traffic will be allowed on Black Cat between Ustick and Cherry Lane. Drivers should use McDermott Road or Ten Mile Road down to Cherry Lane to get around the closure. (see detour map)

Ustick Road will remain open in both directions, but drivers can expect lane restrictions and flaggers directing traffic during the day.

Additional traffic calming will be implemented on residential streets near the intersection. Drivers are reminded to follow the posted detour routes to get around the closure.

During the work, sidewalks on the south side of Ustick Road will be closed. Pedestrians should head south on North Streetwood Avenue (on the west side of Back Cat) or West Niemann Drive (east side of Black Cat), and follow the detour route around the sidewalk closures (see pedestrian detour map).

The Ustick, Black Cat to Ten Mile Project includes widening Ustick Road to two lanes in each direction, widening the Ustick-Black Cat intersection to include additional through lanes and dedicated right and left turn lanes, among other improvements. Residents can learn more and sign up for project updates on this project page.

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.

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

• Infographic
• Comment Summary

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

• Fall 2022 Public Outreach Comment Summary