American Falls Intersection Project Completed by Idaho Transportation Department
Drivers approaching the busy intersection of Pocatello Avenue and State Highway 39 near American Falls will soon experience a much smoother commute. The Idaho Transportation Department (ITD) is wrapping up a $3.5 million project to modernize the junction, which is a key link for farmers, truckers and local residents moving between Bingham County and U.S. 30. Crews have been paving and striping the highway and expect to finish all major work by mid‑October, weather permitting. When the project is complete, traffic on SH‑39 will be able to continue through the intersection without stopping, a change designed to relieve congestion and improve safety.
The previous four‑way stop caused long backups of semi‑trucks and farm equipment during harvest season. Under the new design, Pocatello Avenue traffic must stop and yield before entering or crossing the highway, while SH‑39 traffic will have the right of way. ITD plans to install a permanent traffic signal at the intersection in the spring once the pavement has settled and electrical components are available. Until then, the two‑way stop configuration will remain in place, and drivers are urged to exercise caution and obey the stop signs.
Beyond the new traffic pattern, the project widened the highway, added turning lanes and improved drainage to handle stormwater more effectively. Crews installed new lighting to enhance visibility at night and widened shoulders to accommodate oversized loads and agricultural equipment. These improvements were planned in consultation with local growers and truck drivers to ensure construction did not disrupt the busy fall harvest. Much of the work occurred at night or during off‑peak hours to minimize delays.
ITD reminds motorists to watch for workers and slow‑moving equipment as crews complete finishing tasks such as sign installation and erosion control. Reduced speed limits may remain posted near the work zone until all construction activities are finished. The agency notes that the intersection upgrade is part of a broader effort to improve safety and mobility across eastern Idaho. Once the new traffic signal is installed next spring, drivers can expect smoother travel times and fewer collisions at this rural yet heavily used junction. For the latest construction updates and road conditions, motorists should visit 511.idaho.gov or download the Idaho 511 mobile app.