Mason Transit Authority (MTA) recently completed the construction of a roundabout at SR 3 and Log Yard Road. SCJ led the permitting, design, and construction administration of the roundabout. We worked closely with WSDOT to determine that a roundabout was the preferred intersection control type and led stakeholder and public engagement to address local issues. The roundabout was the first for the Belfair and North Mason County community and required SCJ to work with the public and outline the benefits of roundabouts and why they are the safer option. The Log Yard Road roundabout is also a critical freight intersection, so the design had to accommodate low-boy trailers and 90-foot pole trucks. Our team coordinated utility relocation with CenturyLink, Mason PUD 3, and Belfair Water District facilities. The roundabout will provide safe access to the future MTA Belfair park and ride and provide future control for a connection to the Belfair freight mobility corridor.