Contract Awarded for WA Bridge Painting
The Washington State Department of Transportation has awarded a contract in the amount of $8,150,343.90 for painting and rehabilitation of Cowlitz River Bridge on State Route 411 in Castle Rock, Washington.
The contract was awarded to Hamilton Construction Co. of Olympia, Washington.
Hamilton Construction was the lowest of three apparent bidders. Additional bids included Stellar J Corporation of Woodland, Washington, in the amount of $8,256,328; and Max J. Kuney Company of Spokane, Washington, in the amount of $11,264,688.72.
The project involves cleaning and painting structural steel surfaces, removing deteriorated portions of the existing bridge in stages, and strengthening existing steel girders. The contractor will oversee construction of a new concrete bridge deck with a sidewalk, traffic barrier, pedestrian barrier and bridge railing. Seismic retrofit will also be required, as well as containment and disposal of lead-based materials.
This project will also include replacement and upgrades to the City of Castle Rock’s water and sewer lines, which run across the bridge between the girder bays. The current 12-inch steel pipe water line will be upgraded to 16-inch ductile or high-density polyethylene. The sewer line is currently 8-inch epoxy coated, upgrading to 8-inch ductile iron.
Steel surfaces must be cleaned and prepared in accordance with standards for Solvent Cleaning (SSPC-SP 1), Near-White Metal Blast Cleaning (SSPC-SP 10/NACE No. 2) and Bare Metal Power Tool Cleaning (SSPC-SP 11), including exterior girders, cross frame and bottom lateral connections in the center bay. Center bay cross frames will be detached, and connecting hardware replaced, prior to coating. Concrete surfaces will require a coating system of elastomeric and silicone sealers. Structural steel will receive a coating system consisting of inorganic zinc, epoxy and urethane.
This project will also include replacement and upgrades to the City of Castle Rock’s water and sewer lines, which run across the bridge between the girder bays.
Owner-approved manufacturers include Kelly-Moore, Rodda, Sherwin-Williams and United Coatings.