parametrix inspired people blog

Making Communities Safer: Powell Butte Highway Roundabout


An intersection in rural Oregon that was once avoided because of safety concerns is now home to a beautiful new roundabout. 

Powell Butte Highway Roundabout is the first roundabout to be located in Central Oregon in a rural area with multiple high speed approaches. This roundabout increases safety for the nearly 6,000 travelers and commuters who drive through the intersection each day. Given the major accidents at the intersection, including a fatality, these improvements contribute to the surrounding community in a very real way. Being the first county-led roundabout project, it will serve as a model for future, similar intersections.

Because the roundabout is located on a high-speed highway, the team developed creative solutions to slow traffic and improve visibility for drivers approaching the intersection. Some of the methods included traffic calming measures such as a dynamic feedback sign, striping treatments, and extension of splitter medians. The design also addressed the need for high visibility on the approach legs so drivers are aware of changes ahead.

Parametrix was the prime consultant, responsible for project management, civil design from concept development through final PS&E, public involvement, survey, cost estimating, 3D modeling, construction staging, and construction management. Kittleson & Associates provided traffic engineering and Universal Field Services provided services for right-of-way acquisition.

Special thanks to our friends at SKYWERKS for the amazing drone video of the completed roundabout.