Unofficial Notice of Invitation to Bid (NIB)

Truckee Donner Public Utility District is seeking bids from qualified and interested contractors for the following project titled, Martis Valley Substation Civil Construction - 2026, identified under Solicitation ID: -. Work is to be performed near Riverview Dr, Plainville, CT 06062, USA in Capitol Planning Region.

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General Project Description

This project involves civil construction for the Martis Valley Substation. The scope of work includes the demolition and removal of existing steel structures, concrete foundations, vaults, conduits, and boxes. It also entails extensive earthwork including grading, installation of drainage infrastructure, and site revegetation. Key installations comprise vaults, boxes, and conduits for primary and secondary electric cables, control wiring, and fiber-optic cables, along with thermal concrete slurry encasement for primary electric conduits. The project modifies substation fencing and gates, adds to the substation ground grid, and involves the installation and repair of concrete foundations. Pavement work includes removal, installation, and resurfacing of asphalt surfaces. Electrical components to be replaced or installed include insulators, overhead bus, arresters, substation lighting, and camera systems. The project also calls for the installation of District-provided equipment such as 145 kV VCB, meter pedestals, and station service transformers, procurement and installation of steel primary riser structures, and the installation and termination of various electric and fiber-optic cables. Finally, comprehensive testing and commissioning of the substation protection and control systems are required.

General Bid Items

Quantity: 1 Unit: LS Work Item: Mobilization / Demobilization
Quantity: 20 Unit: HRS Work Item: Rock Excavation
Quantity: 1 Unit: LS Work Item: Demolition and removal of steel structures, concrete foundations, vaults, conduits and boxes
Quantity: 1 Unit: LS Work Item: Conduit, Vaults, Boxes and Drainage Infrastructure
Quantity: 1 Unit: LS Work Item: Concrete Slurry Encasement
Quantity: 1 Unit: LS Work Item: Substation Fencing and Gates
Quantity: 1 Unit: LS Work Item: Concrete Foundations
Quantity: 9000 Unit: SF Work Item: AC Pavement and Base (New Install)
Quantity: 20000 Unit: SF Work Item: AC Pavement (Grind & Overlay)
Quantity: 1 Unit: LS Work Item: Substation Electrical Equipment and Hardware
Quantity: 1 Unit: LS Work Item: Ground Grid Improvements
Quantity: 1 Unit: LS Work Item: Substation Lighting & Cameras

NAICS Classification

237310 – Highway, Street, and Bridge Construction, 238910 – Site Preparation Contractors, 237130 – Power and Communication Line and Related Structures Construction, 238110 – Poured Concrete Foundation and Structure Contractors, 238120 – Structural Steel and Precast Concrete Contractors, 238210 – Electrical Contractors and Other Wiring Installation Contractors, 238990 – All Other Specialty Trade Contractors

Records and Due Date

This bid opportunity was entered into BidAmerica on February 19, 2026, and was last updated on February 19, 2026. All bids and/or proposals are due on March 18, 2026.

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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 Truckee Donner Public Utility District. 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 Truckee Donner Public Utility District prior to bidding.