Woodinville-Duvall Roadway Improvements

Passing through Duvall’s rural countryside and the forested communities along unincorporated King County, Woodinville-Duvall Road is an important arterial through the Puget Sound region’s eastside. However, it was not built for a packed morning commute. To meet the needs of the eastside’s growing communities, the City of Woodinville sought to add capacity for its increased traffic and growing population of pedestrians and bicyclists. Otak’s integrated specialists redesigned the traffic corridor with safety and sustainability in mind, working with the City and nearby landowners to make the best use of the surrounding open space. New bicycle lanes and additional car lanes were added to the one-mile roadway, along with new signals and street lighting. Retaining walls and landscaping were designed to add to the walkability of the new pedestrian paths. A new storm drainage system was also installed to protect the area’s water quality, with stream crossings and environmental mitigation coordinated and approved by local, state, and federal regulatory agencies.

Our specialists worked with the Woodinville community to reduce construction impacts, including folding the replacement of an existing water main into the project schedule and crafting temporary traffic control and hour requirements for local schools.