Sections of Southeast Sixth Street and the Lake Hills Connector, south of downtown, will be closed to vehicles in the coming months while King County’s Wastewater Treatment Division installs a new sewer pipeline.
The construction is part of King County’s upgrade of a pump station in Bellevue. The project includes installation of a mile of new pipeline beneath Southeast Sixth, from the pump station at 102nd Avenue Southeast, east to the Lake Hills Connector near the Wilburton Trestle, where a regional pipeline transports the wastewater to a treatment plant in Renton. The larger pipe will accomodate the needs of west Bellevue and downtown over the next 50 years.
To minimize impacts, workers will use a technique called horizontal directional drilling to install most of the new pipe. Drilling rigs at opposite ends of the pipe section to be installed will use radio-guided drill heads underground to bore a pilot hole toward each other. Temporary traffic revisions needed to accommodate workers and equipment and protect the public during construction include:
- Through December, Southeast Sixth will be closed from 102nd Avenue Southeast to the end of the Southeast Sixth open space at 100th Avenue Southeast. Traffic will be detoured north on 100th Avenue to Southeast Third Street, and a temporary sidewalk will be in place.
- From Aug. 11 to December, Southeast Sixth will be closed to traffic between 112th and 114th avenues Southeast, east of the Bellevue Club, and sidewalk closures and detours also will be in place.
- From September to December, the westbound outside (non-curb) lane of the Lake Hills Connector will be closed, and a construction staging area will be put in place at the intersection of 115th Avenue Southeast and Southeast Fifth Street. There also will be sidewalk closures and detours around this area.
Most work will occur from 7 a.m. to 5 p.m. weekdays and from 9 a.m. to 6 p.m. Saturdays. Impacts will include noise, truck traffic and detours. More information about the project, including traffic detour and road closure maps, is available online at the King County Traffic Detours website or by calling 206-263-6543 or 711 TTY Relay.
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