State Parks Project – Lagoon, Shoreline, and Stream Restoration at Twanoh State Park
| Agency: | Sammamish Plateau Water |
|---|---|
| State: | Washington |
| Type of Government: | State & Local |
| NAICS Category: |
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| Posted Date: | Mar 8, 2026 |
| Due Date: | Apr 7, 2026 |
| Solicitation No: | SW-C2023A |
| Original Source: | Please Login to View Page |
| Contact information: | Please Login to View Page |
| Bid Documents: | Please Login to View Page |
Description
Project Description: This project includes removing a concrete bulkhead, expanding an existing saltwater lagoon, constructing a tidal channel, re-planting salvaged native vegetation around the fringe of the new lagoon. The project also includes removing existing riprap and several trees along the shoreline and streambanks; naturalizing the shoreline by installing large woody debris, bioengineered softshore armoring and a deformable gravel berm; performing work within Twanoh Creek that includes expanding the floodplain, installing clusters of large woody debris within the stream and floodplain, removing and replacing a pedestrian bridge and abutments, and installing bioengineered streambanks.
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