Small sewer relocation set to begin Nov. 30 on Mapleton Drive
This update includes information about the following topics. Read more for specific information on each topic:
- Mapleton Drive pipeline – finished (treated) water pipe installation continues, sewer line relocation to begin after Thanksgiving
- Mapleton Drive raw water pipe paving – taking place today
- Neighborhood construction meetings - next meeting Dec. 1 at 7:30 a.m.
Construction sites are busy places. The roadway is very narrow and there is a lot of equipment between the active work zone and staging areas. Please be cautious and aware – pedestrians and bicyclists are encouraged to avoid the need to walk or ride through the active work zone. During work hours, flaggers are present to help maintain safe traffic control.
Mapleton Drive - finished (treated) water pipe installation continues, sewer line relocation to begin after Thanksgiving
Crews worked in tough conditions this week with the heavy rain as well as many existing utilities and conduits in the trench, however, they have now installed pipe up to about 4117 Mapleton Drive (pictured above).
Today, they are placing a temporary pavement patch over the trench between the plant and 4117 Mapleton Drive.
Next week, crews will install several “bend” pieces (corner pipe) near 4322 Mapleton Drive, to connect the newly-installed finished water pipe with the pipe at the plant. A large delivery of pipe is also expected to arrive early next week.
Starting the week of Nov. 30, crews plan to relocate about 150 feet of sewer line between 4101 Mapleton and 4020 Mapleton. This work is expected to take about a week to complete. The sewer relocation involves digging in the road and installing a new sanitary sewer line. To avoid service interruptions, the contractor will use a temporary bypass during the work.
Once the sewer is relocated, crews will resume laying the water pipe around 4101 Mapleton Drive, working westward.
During the sewer and pipe work, the road will remain closed in the active work area and the detour route will be in place.
Please note, construction priorities and schedules are subject to change
Erosion control and mud
Unfortunately, with pipe construction comes mud and dirt, particularly in the active construction zone and between the staging yards where trucks are entering and exiting. The contractor is following all best management practices (BMPs) for erosion control. Both third party erosion control inspectors, and the City of West Linn, are regularly monitoring the job site to ensure the BMPs are being met and any recommendations are being adhered to.
To help improve the road condition, the contractor recently reconstructed their staging yard near Trillium Creek, adding 8-inch rock throughout the site. This is helping to improve the area. Also, there are two street sweepers that operate several times throughout the day on Mapleton Drive, to help sweep and vacuum the street.
Road closure and detour route during pipeline construction
During work hours, a detour is in place and no through traffic is allowed in the active work zone on Mapleton Drive. Please follow the detour signage directing traffic around the closure area.
The road is closed to through traffic at the active work zone as it moves along Mapleton Drive. Residents located east of the active work zone will need to use the detour route on Nixon Avenue, Elmran Drive and Cedaroak Drive during work hours (refer to detour map link above). Residents located west of the active work zone can use Mapleton Drive between their home and Highway 43 during work hours.
For more information about road closures and detours, refer to the guidelines.
Work hours and what to expect
Work hours on Mapleton Drive are typically Monday to Friday, 7 a.m. - 7 p.m. and Saturdays, 9 a.m. - 5 p.m. No pipeline work is planned for Saturday, Nov. 7. In observance of Thanksgiving, no pipeline work will take place from Thursday, Nov. 26 – Sunday, Nov. 29.
Questions about pipeline construction on Mapleton Drive? Check out these helpful guidelines.
Raw water pipe paving taking place today
The City of West Linn’s paving contractor is installing a 4-inch layer of asphalt today, where the raw water pipe was installed between the east of the plant and the end of Mapleton.
For more information or questions about paving, please contact the City of West Linn Public Works Department on 503-722-5500.
Neighborhood construction meetings - next meeting Dec. 1 at 7:30 a.m.
The next neighborhood meeting will be held at Robinwood Station on Tuesday, Dec. 1 at
7:30 a.m. Please attend to stay up-to-date on construction progress in West Linn and ask the project team questions.
- The first Tuesday of the month at 7:30 a.m., at Burgerville, 18350 Willamette Drive, West Linn.
- The third Tuesday of the month at 6 p.m., at the Robinwood Station, 3706 Cedar Oak Drive, West Linn.