04-2W3704 Install Anchored Double Twisted Wire Mesh System and Erosion Control

California Department of Transportation (Caltrans) District 04 is soliciting bids for installation of an anchored double twisted wire mesh system and erosion control measures on State Highway Route 29 near Calistoga in Napa County, with bids due August 25, 2026 at 2:00 p.m. via Bid Express. The project carries a 5% Disadvantaged Veteran Business Enterprise (DVBE) participation goal and a 5% Small Business Enterprise (SBE) participation goal.

Contractors must hold either a Class A or Class C-12 license. The scope encompasses 26 bid items including lead compliance planning, traffic control systems, erosion control products, rock scaling, clearing and grubbing, excavation, and permanent erosion control establishment at 3.1 miles north of Tubbs Lane. Work excluding permanent erosion control must be completed within 45 working days; total project completion including permanent erosion control establishment is required within 295 working days, with permanent erosion control work alone requiring 250 working days. Special provisions address local material sourcing with strict lead and contamination testing requirements, environmental product declarations for materials, temporary traffic control with liquidated damages for late lane openings, and construction-phase monitoring including biologist-led worker training and habitat protection during the February 1–September 30 nesting season.

The estimated project cost is $780,000 on a unit price basis. A minimum security deposit equal to 10% of the total bid amount is required. Prevailing wages apply as determined by the California Department of Industrial Relations. The contract is non-federal-aid. Environmental requirements cover species protection, invasive species control, and fire prevention protocols.