STC-8223, northside blvd & karcher RD, nampa

Federal Grant Award Summary

The Federal Highway Administration (FHWA) awarded Idaho Department of Transportation $1,105,000 under the Highway Planning and Construction program (CFDA 20.205) on September 15, 2025, for the construction of a multi-lane roundabout at the intersection of Northside Boulevard and Karcher Road in Nampa, Idaho. The project, designated STC-8223, is scheduled for completion by August 31, 2029, and represents a formula grant allocation supporting state-administered highway infrastructure improvements.

The award funds the installation of intersection safety and connectivity improvements, including the multi-lane roundabout structure, sidewalk construction, and rectangular rapid flashing beacon (RRFB) crossings designed to enhance pedestrian safety and traffic flow at this critical intersection. As a state formula grant recipient, Idaho Department of Transportation will manage design, environmental compliance, and construction oversight in accordance with FHWA Stewardship and Oversight Agreement requirements and applicable federal regulations under 23 CFR and 2 CFR 200.

Project description

Install a multi-lane roundabout at the intersection of northside boulevard and karcher road in the city of nampa. Work includes sidewalks and rectangular rapid flashing beacons (RRFB) crossings.