Council approves amendment to East Side Arterial progressive design‑build to add Airport Way/Nineteenth Street roundabout

The Redmond City Council approved Amendment No. 3 to the progressive design‑build contract with Knife River Corporation to add preconstruction design services for a roundabout at Airport Way and Southwest Nineteenth Street. Jacob Sherman, principal engineer, said adding the roundabout as Phase 5 to the East Side Arterial program will accommodate traffic from planned large-lot industrial development and from airport expansion and improve geometry and access to the Deschutes County Fairgrounds.

The amendment adds design for the Airport/Nineteenth roundabout at a cost not to exceed $1,120,097.34 and keeps the overall East Side Arterial program budgetary total at approximately $38.3 million when future phases and GMPs are included. Staff described operational efficiencies from adding the roundabout into the existing progressive design‑build delivery, noting concurrent design and construction streams can shorten the overall delivery timeline compared with delivering each project separately.

Councilors asked about scope creep and whether projects were being bolted onto the progressive contract for convenience. Sherman and staff said they evaluate candidate projects case-by-case for fit to the progressive design‑build delivery and that the Airport/Nineteenth roundabout was prioritized because of nearby early-stage development, fairgrounds coordination and utility complexities that benefit from integrated design. The council approved the amendment; staff said adding the phase will enable earlier design work to occur and leverage mobilization already on site.