NE 91st St slope stabilization and drainage improvements
NE 91st St Slope Stabilization and Drainage Improvements, Solicitation 214482, issued by City of Seattle.
At a glance
Seattle Public Works is seeking a contractor to stabilize slopes and improve drainage on NE 91st Street in the Wedgwood neighborhood. Work includes replacing junction boxes, installing ductile iron and HDPE pipes, constructing a reinforced soil slope, and restoring asphalt and right-of-way surfaces. The project has an engineer's estimate of $502,500.
Key facts
- Issuing agency
- City of Seattle
- Solicitation number
- 214482
- Type
- purchase
- Posted
- Nov 19, 2025
- Response deadline
- Dec 17, 2025, 5:00 PM EST
- Place of performance
- King County, WA
Official description
Solicitation #PW#2025-013. Issued by Public Works. Project Description: This Project consists of the following elements of Work: Replace 3 existing sandboxes with Type 277b junction boxes. Install 96 feet of 12-inch ductile iron pipe. Install 1 new Type 240b catch basin with anchor block and extended sump on the south side of the street end. Install 80 feet of 12-inch HDPE pipe (30 feet buried, 50 feet surface mounted) to the base of the slope. This includes approximately 20 feet of existing HDPE pipe to be reused. Install 10-foot-long dissipation tee (reuse existing) and new dissipation pad at the outfall. Construction of a reinforced soil slope (RSS); however, planting and Landscape Establishment of the vegetated face will be performed by others and is not included in this Contract. Asphalt restoration at the street end. Jute mat, much, seeding and slope restoration in the unimproved Right of Way as shown on the Drawings; planting and landscape establishment shown on Drawings 19 through 21 are not in contract and will be performed by others.
Engineer's Estimate: $502,500 Project Location: This Project is located at the dead-end of NE 91st St, east of 38th Ave NE in the Wedgwood neighborhood of Seattle.
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