· rebuilt nightly from public records
Granite Rock Company has 12 public construction bids on record since 2025 and was low bidder on 2 (17%); the typical gap to the low bid was 25.1%.
Granite Rock Company bids on public construction work in California since 2025, from the bid tabulations agencies publish: each job, what Granite Rock bid, the low bid and who placed it.
Bid tabulations naming Granite Rock since 2025, jobs of $100,000 or more.
Times Granite Rock was the apparent low bidder.
Typical gap to the low bid: 25.1%Open bids in California for the kind of work Granite Rock has bid on, with a week or more left.
From the agency's published bid tabulation. Apparent low bidder is not always the award.
| Agency | Job | Decided | Granite Rock bid | Low bidder | Low bid | Gap |
|---|---|---|---|---|---|---|
| City of American Canyon | Green Island Road Class I Project | Oct 23, 2026 | $1,116,073 | MARTIN BROTHERS CONSTRUCTION | $704,395 | +58.4% |
| City of American Canyon | South Kelly - Highway 29 Intersection Project | Jul 23, 2026 | $4,008,168 | Carone and Company Inc | $3,128,500 | +28.1% |
| County of Napa, CA | 550 Wall Road Landslide Repairs | Jul 14, 2026 | $713,269 | North Bay Excavation | $567,058 | +25.8% |
| Solano County | Northeast Hangar Taxilanes Reconstruction & Drainage Improvements, Phase 2B | May 6, 2026 | $1,979,330 | O.C. Jones & Sons, Inc | $1,797,351 | +10.1% |
| County of Napa, CA | North GA Ramp Reconstruction Project | Apr 23, 2026 | $6,646,514 | Ghilotti Bros., Inc | $5,599,075 | +18.7% |
| County of Napa, CA | Upper Partrick Road Rehabilitation Project | Apr 23, 2026 | $1,700,503 | Piazza Construction | $1,499,080 | +13.4% |
| County of Napa, CA | Devlin Road Paving | Apr 9, 2026 | $1,370,879 | Bay Cities Paving & Grading Inc | $1,067,707 | +28.4% |
| County of Napa, CA | Rossi Bridge Phase 2 | Apr 2, 2026 | $1,839,287 | Cats4U, Inc | $1,470,376 | +25.1% |
| County of Sacramento | New Hope Road Bridge at Grizzly Slough Replacement Project | Feb 19, 2026 | $4,991,727 | Viking Construction Company, Inc | $4,536,070 | +10.0% |
| County of Napa, CA | LBRID Phase 2 Wastewater Ponds Rehabilitation Project | Jan 22, 2026 | $939,000 | 2C Land and Timber Management Corp | $803,930 | +16.8% |
| City of American Canyon | American Canyon Road East Guardrail Project | Nov 12, 2025 | $352,097 | low bid | $352,097 | |
| County of Sacramento | Winter Storm 2022-2023 Alta Mesa Road Culvert Replacement Project | Oct 9, 2025 | $413,020 | low bid | $413,020 |
Open bids in California whose title shares the kind of work Granite Rock has bid on. Each links to the agency's board.
2 of 12 bids on record since 2025 (17%).
Ghilotti Construction Company, Inc (6 times); Argonaut Constructors (5 times); O.C. Jones & Sons, Inc (4 times); Kerex Engineering (3 times); MARTIN BROTHERS CONSTRUCTION (3 times).
27 as of Nov 5, 2026, including West End Stormwater Improvement Project Formal Bid (City of Sand City), due Nov 12, 2026; Paving for Water Facilities and Leak Repairs 2026-1 (Napa city), due Nov 12, 2026; CHP Marin Area office - Portable Luxury Restroom Trailer Rental… (Dept of the CA Highway Patrol), due Nov 12, 2026.
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Compiled from public records and refreshed nightly; last updated Nov 5, 2026. Results are as the agency published them in its bid tabulation; apparent low bidder is not always the award. Firms are named as they appear on the tabulation; no individuals are named. Check the source before acting. See something wrong? Tell us and we will correct it.