Unofficial Notice of Invitation to Bid (NIB)

California State Dept of Transportation (CalTrans) is seeking bids from qualified and interested contractors for the following project titled, CONSTRUCTION ON STATE HIGHWAY IN SONOMA COUNTY NEAR SCHELLVILLE ON ROUTE 116 FROM 0.3 MILE NORTH OF BONNEAU ROAD TO ROUTE 121 AND ON ROUTE 121 FROM 0.2 MILE SOUTH OF BONNEAU ROAD TO 0.1 MILE EAST OF MAFFEI ROAD, identified under Solicitation ID: 04-3G9014. Work is to be performed near Schellville, CA 95476, USA in Sonoma County.

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General Project Description

This project involves general construction on state highways in Sonoma County, specifically on Route 116 and Route 121. The primary scope includes maintaining existing planted areas and erosion control. Key work items encompass lead compliance, traffic control systems (including temporary pedestrian access and changeable message signs), job site management, water pollution control, invasive species control, roadside clearing, soil amendment, organic fertilizer application, maintenance of existing planted areas, installation and operation of temporary irrigation systems, checking and testing existing irrigation facilities, flow meter installation, dry seeding, and maintaining existing traffic management system elements during construction. The project also addresses environmental stewardship, including compliance with permits for water quality, biological opinions, and managing aerially deposited lead (ADL) and invasive species.

General Bid Items

Quantity: LS Unit: LS Work Item: LEAD COMPLIANCE PLAN
Quantity: LS Unit: LS Work Item: CONSTRUCTION AREA SIGNS
Quantity: LS Unit: LS Work Item: TRAFFIC CONTROL SYSTEM
Quantity: LS Unit: LS Work Item: TEMPORARY PEDESTRIAN ACCESS ROUTE
Quantity: LS Unit: LS Work Item: PORTABLE CHANGEABLE MESSAGE SIGN (LS)
Quantity: LS Unit: LS Work Item: JOB SITE MANAGEMENT
Quantity: LS Unit: LS Work Item: WATER POLLUTION CONTROL PROGRAM
Quantity: LS Unit: LS Work Item: INVASIVE SPECIES CONTROL
Quantity: LS Unit: LS Work Item: ROADSIDE CLEARING
Quantity: 26 Unit: CY Work Item: SOIL AMENDMENT
Quantity: 800 Unit: LB Work Item: ORGANIC FERTILIZER
Quantity: LS Unit: LS Work Item: MAINTAIN EXISTING PLANTED AREAS
Quantity: LS Unit: LS Work Item: TEMPORARY IRRIGATION SYSTEM
Quantity: LS Unit: LS Work Item: CHECK AND TEST EXISTING IRRIGATION FACILITIES
Quantity: LS Unit: LS Work Item: OPERATE EXISTING IRRIGATION FACILITIES
Quantity: 2 Unit: EA Work Item: FLOW METER
Quantity: 177,000 Unit: SQFT Work Item: DRY SEED
Quantity: LS Unit: LS Work Item: MAINTAINING EXISTING TRAFFIC MANAGEMENT SYSTEM ELEMENTS DURING CONSTRUCTION
Quantity: LS Unit: LS Work Item: MOBILIZATION

NAICS Classification

Highway, Street, and Bridge Construction, Site Preparation Contractors, Landscaping Services, Remediation Services

Records and Due Date

This bid opportunity was entered into BidAmerica on November 18, 2025, and was last updated on November 14, 2025. All bids and/or proposals are due on December 9, 2025.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by California State Dept of Transportation (CalTrans). BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from California State Dept of Transportation (CalTrans) prior to bidding.