Major pipe work complete on Mapleton Drive, testing and disinfecting begins!
Last week, crews installed the last major piece of pipe on Mapleton Drive! Two small pieces of pipe remain for the final connections, which will be placed shortly.
This week, crews began filling the pipeline and pressure testing it. Once the pressure testing is complete, the pipeline will be disinfected, which is expected to begin early next week. Following the disinfection, crews will install the final connecting pieces at the intersection of Highway 43 and Mapleton Drive, and at the water treatment plant site staging yard. These final connections will allow the new finished water pipe to be placed into service!
Traffic Reminder: During work hours, the road will remain closed to through traffic at Highway 43 until the final connection is installed – this is expected to be placed in late February.
Crews will continue to be active on Mapleton Drive, predominantly between Highway 43 and the plant. Over the next few weeks as the new pipeline is tested, drained and disinfected, neighbors may notice small, temporary piping discharging to the sanitary sewer manhole near 4435 Mapleton Drive, just east of the plant. Single lane closures may be present in areas where crews are working. Please watch for flaggers.
Once the final connections are made, the steel plates will be removed at the intersection of Mapleton Drive and Highway 43 and temporary pavement will be placed.
Over the coming weeks, crews will also begin restoration activities and removing some equipment.
Work hours on Mapleton Drive are 7 a.m. - 7 p.m., Monday through Friday, and 9 a.m. - 5 p.m. on Saturdays.
Upcoming sewer scope inspection work
At the request of the City of West Linn, over the next week, a contractor will be inspecting the sanitary sewer on Mapleton Drive. A scope will be placed between manhole to manhole, along the length of Mapleton Drive. Neighbors will notice inspection equipment, work vehicles and crews opening manholes. There may be intermittent single lane closures during this work. The scope inspection is expected to take two-three days to complete. No sewer services are expected to be impacted during this work.
Road closure and detour route during pipeline construction
The road remains closed to through traffic at Highway 43 and Mapleton Drive. During this time, all residents and traffic on Mapleton Drive, including those located west of Trillium Creek, will need to use the detour route during work hours. Please follow the detour signs directing traffic around the closure. Access for pedestrians and emergency vehicles is maintained.
For more information about pipeline construction or road closures, refer to these helpful guidelines.
Neighborhood meetings – new frequency starting in April
The next neighborhood meeting will be held on Tuesday, March 1 at 7:30 a.m. This will be the final meeting held at Burgerville, 18350 Willamette Drive, West Linn.
Starting in April, meetings will be held once a month at the Robinwood Station, 3706 Cedaroak Drive, West Linn. Meetings will be held on the third Tuesday of the month at 6 p.m.