The Ada County Highway District is preparing to launch a major reconstruction project on Cole Road near the Interstate 84 interchange in Boise, Idaho, with work expected to begin as early as mid-April 2026. The project will address aging pavement infrastructure and bring pedestrian facilities up to modern standards along one of the Treasure Valley’s busiest commercial corridors.
Background: Aging Infrastructure on a High-Traffic Corridor
The Cole Road segment targeted for reconstruction runs between Victory Road and Overland Road — a stretch that sees heavy daily traffic due to its proximity to the I-84 interchange and a concentration of popular retail destinations. Among the businesses in the immediate area are the Boise Costco warehouse and the Regal Edwards movie theater, making the corridor a frequent destination for Ada County residents and commuters throughout the region.
ACHD officials stated that the pavement in the area “has reached the end of its service life” and requires repair to bring it up to current road-building standards. The agency said the reconstruction will also include upgrades to pedestrian signals and updates to pedestrian ramps to meet Americans with Disabilities Act (ADA) requirements — improvements that advocates for accessibility have long pointed to as necessary along older Idaho thoroughfares.
This project is part of a broader pattern of infrastructure investment across Ada County, as aging roads built during earlier decades of growth face mounting maintenance demands. Readers following local construction activity may also be interested in the I-84 Connector construction and Ada County Jail expansion project, which reflects similar pressure on the county’s public infrastructure.
Project Details: Night Work Planned to Ease Traffic Disruptions
In an effort to minimize disruption for businesses and drivers along one of Boise’s busiest commercial stretches, ACHD said construction work will primarily occur at night. The agency noted that lane restrictions should be expected during the project’s duration, along with typical construction-related impacts including noise, dust, ground vibration, and equipment backup alarms.
The project is expected to be complete by late fall 2026, meaning drivers and business owners in the Cole Road corridor can anticipate several months of intermittent construction activity. The decision to concentrate work during overnight hours reflects the agency’s awareness of the economic activity centered along the corridor and the need to keep access open for nearby retailers and their customers.
For Ada County commuters tracking road projects across the city, Boise’s 8th Street Corridor improvement project represents another significant infrastructure effort reshaping traffic patterns in the Idaho capital this year.
Impact on Ada County Residents, Businesses, and Commuters
The Cole Road corridor between Victory and Overland is among the more heavily traveled surface roads in the Boise metro area, particularly on weekends when shoppers flock to the Costco warehouse and surrounding retailers. For families and small business owners in the area, the overnight construction schedule offers some relief — but months of lane restrictions and construction noise will still require patience and planning.
Taxpayers who rely on ACHD to maintain a functional road network in Ada County will likely view the project favorably, as deferred maintenance on high-traffic corridors can lead to significantly higher repair costs over time. Addressing the pavement before it deteriorates further and updating ADA-compliant infrastructure are generally considered sound uses of highway district resources.
Residents living near the Cole Road and I-84 area should expect some noise disruption during overnight construction windows, as ACHD has acknowledged ground vibration and equipment sounds as anticipated impacts throughout the project.
What Comes Next
ACHD has indicated construction is set to begin as early as mid-April 2026, with completion targeted for late fall 2026. Drivers who regularly use Cole Road between Victory Road and Overland Road should plan for lane restrictions during the construction period and consider alternate routes when possible, particularly during overnight hours when work is underway.
Ada County residents seeking updates on this and other active road projects in the Treasure Valley can monitor ACHD’s official communications for project schedules, detour information, and construction progress. The agency typically provides regular updates as major reconstruction projects advance through their phases.