Sanbell (formerly Sanderson Stewart) led improvements to the North 7th Avenue and Griffin Drive intersection in Bozeman, Montana. This Montana Department of Transportation (MDT) project focused on improving traffic flow, safety, and infrastructure. The upgrades included a new traffic signal, expanded turn lanes, better lighting, and modern storm drainage. Dual westbound left-turn lanes eased heavy […]
I-90 Yellowstone River Road
Sanbell – Rocky Mountain (formerly Sanderson Stewart) supported HDR on the I-90 Yellowstone River Project in Billings, Montana. This Montana Department of Transportation (MDT) project upgrades a critical stretch of Interstate 90 to improve safety, traffic flow, and long-term infrastructure resilience. The project will finish in 2024. It widens the interstate inward to add an […]
Central Avenue and 56th Street Roundabout
Sanbell played a key role in completing the Roundabout Central & 56th project (UPN 8611000) in Billings, Montana. Construction finished in 2022. The project included designing and building a roundabout as part of two safety initiatives. It also involved major irrigation, access, and drainage improvements. Sanbell handled road design, topographic surveying, cadastral Certificate of Survey […]
Rimrock and 62nd Roundabout
This safety project aimed to replace a dangerous horizontal curve and merge three hazardous intersections into a single-lane roundabout. The goal was to improve safety in a high-speed rural area. Key components included upgrading the storm system, improving subsurface drainage, relocating irrigation pipelines, installing sidewalks, and adding raised median islands. The project also required extensive […]




