State Parks Project – Lagoon, Shoreline, and Stream Restoration at Twanoh State Park

Washington State Parks is procuring construction services for the Twanoh State Park Lagoon, Shoreline, and Stream Restoration project (Contract #SW-C2023A) in Mason County, Washington. The scope of work encompasses approximately 650 linear feet of comprehensive ecological restoration, including removal of a 400-foot concrete bulkhead, expansion of an existing saltwater lagoon, construction of a tidal channel, removal of 1,869 tons of riprap and existing trees, installation of large woody debris clusters and bioengineered softshore armoring, floodplain expansion within Twanoh Creek, installation of 3,519 linear feet of coir lifts for bioengineering, excavation of approximately 8,900 cubic yards of material, removal and replacement of a pedestrian footbridge with new ADA-compliant beach access ramps, salvaging and replanting approximately 1,500 square feet of native vegetation including pickleweed and marsh grass, and installation of bioengineered streambanks using willow live stakes and container plantings. Qualified bidders must demonstrate experience on similar projects valued at minimum $500,000 completed within the past seven years, provide qualifications of project management and superintendent personnel, submit good faith efforts documentation for disadvantaged business participation, and demonstrate apprenticeship participation history. The bid opening is scheduled for 1:00 p.m. on Tuesday, April 21, 2026, with a mandatory pre-bid walkthrough on Thursday, March 19, 2026, at 10:00 a.m. at the Boat Launch Parking Lot; bids must be submitted electronically through the MRSC Bonfire Procurement Portal at https://mrscrosters.bonfirehub.com/portal by April 7, 2026. The contractor must achieve substantial completion within 60 calendar days from the Notice to Proceed and final completion within 30 days thereafter, with liquidated damages assessed at $250 per calendar day for delays.

This project is subject to prevailing wage requirements under both Washington State RCW 39.12 and federal Davis-Bacon wage rates, with contractors required to pay the higher applicable rate for each labor classification. The project includes a mandatory 15 percent apprentice labor hour requirement with a $1,000 incentive for compliance or a $100 penalty per percentage point shortfall. Bidders must comply with Buy America requirements per the Department of the Interior, ensuring domestic content preferences for iron, steel, manufactured products, and construction materials, with manufactured products requiring at least 55 percent domestic components per the Bipartisan Infrastructure Law. Voluntary diversity goals include 10 percent for Minority Business Enterprises, 6 percent for Women's Business Enterprises, 5 percent for Washington Small Businesses, and 5 percent for Veteran-owned businesses. A bid bond equal to 5 percent of the base bid amount is required for bids exceeding $35,000, with bid bonds for the three lowest bidders retained for 30 days or until contract execution. The estimated bid range is $1,114,650.00 to $1,362,350.00, with the project funded through a federal subrecipient grant and the in-water work window restricted to July 16 through January 14, with site availability beginning July 6, 2026.