Basin 25b Neighborhood Drainage Improvement
Project Status
To help keep area residents informed of our construction progress, we will post project updates to this site on a regular basis. Click here to see status updates.
Project Details/Neighborhood
- 86th Ave SE, south of SE 46th Street
- SE 47th Street between 86th and 84th Ave SE
- 84th Ave SE between SE 47th Street and 47th Pl
Background
Localized ponding can occur along 86th Ave SE and SE 47th Street during heavy rains.
Description
Several catch basins will be installed in the neighborhood to collect stormwater including one along 86th AVE SE, south of SE 46th Street and two along SE 47th Street between 86th Ave SE and 84th Ave SE. The existing storm drainage system along 84th Ave SE, which currently includes a combination of ditches and driveway culverts will be replaced with a 12-inch diameter storm sewer pipe that will connect to the existing storm sewer at the corner of SE 47th Pl and 84th Ave SE. This new system will improve the collection and conveyance of storm drainage and reduce surface ponding.
Project Timeline
Planning/Design (Q2 of 2023 – Q4 of 2023)
Under Construction (Q2 of 2024– Q3 of 2024)
Completed (Q3 of 2024)
Estimated Budget
Planning and Design $32,640
Construction $140,360
Contact
Elayne Grueber, Capital Project Manager, elayne.grueber@mercerisland.gov , cell:206-549-1036
Status Updates
December 2023
Design work on storm drainage improvements continues as part of the 2024 Water System Improvements within the same neighborhood.
October 2023
This project has been combined with the 2024 Water Improvement project . The design and construction for both stormwater and water main improvements will be completed simultaneously to minimize residential impacts and reduce overall costs.
July 2023
CM Design Group was hired to complete the design work. Design is currently at 60 percent with final plans expected by the end of 2023.
SW0129- Project Location (1 MB)