01-0L1104 Earthwork, Construct Soldier Pile Walls, & Place New Roadway Section

California Department of Transportation (Caltrans) is soliciting bids for earthwork, soldier pile wall construction, and new roadway placement on State Highway 101 at Hopland in Mendocino County under Contract 01-0L1104, with bids due October 7, 2026 and a mandatory virtual pre-bid meeting held September 3, 2026. This is a federal-aid project (NHHS-Q101(462)E) requiring prevailing wage compliance at the higher of California Director of Industrial Relations rates or federal minimum wage rates from the U.S. Secretary of Labor, and Buy America requirements apply to iron, steel, manufactured products, and construction materials with a De Minimis Costs waiver available if non-compliant materials total no more than $1 million or 5 percent of total applicable costs.

The scope includes clearing and grubbing, roadway excavation of approximately 5,800 cubic yards, structure excavation and backfill, installation of approximately 5,695 linear feet of steel soldier piles in various sizes, placement of approximately 7,100 tons of hot mix asphalt, concrete barriers, guardrails, drainage improvements, pavement markings, and traffic control devices. Bidders must hold either a California Class A license or a combination of Class C licenses (C-12, C-8, C-61, D-09). Special requirements include an on-site safety representative with specified certifications, a site-specific safety program, automated machine guidance with precise survey control and quality validation, stormwater pollution prevention measures, a contractor-supplied biologist, and a natural resource protection plan.

The estimated project cost is $14.5 million. Work completion spans 165 to 230 working days on a cost-plus-time basis. Bidders must submit security equal to at least 10 percent of bid amount. The contract coordinates with coincident contracts (01-0H1404 and 01-0P5704) for sidewalk construction and digouts in the Hopland area. Environmental product declarations for hot mix asphalt and concrete are required as informational submittals. The bid schedule contains 116 line items covering mobilization, traffic control, environmental compliance, earthwork, paving, structural elements, and miscellaneous construction.