SDDOT bid tabs
Updated Oct 7, 2026 (newest letting in this data)
A bid tab (bid tabulation) is the record South Dakota Department of Transportation publishes after a letting: every bid received on each contract, ranked from low to high, usually next to the engineer's estimate.
Contractors use SDDOT bid tabs to see how many firms bid each kind of work, how close the low bid came to the estimate, and where their own pricing sat. This page summarizes the tabs in our data by year; bidder names are not shown.
- Projects in data
- 1,114
- Projects with bid tabs
- 1,104
- Median bidders per project
- 3
- Single-bid rate
- 10.4%
- Median low bid vs estimate
- 98%
- Low bid under estimate
- 55%
Bid tabs by year
| Year | Projects let | With bid tabs | Single-bid rate |
|---|---|---|---|
| 2026 | 117 | 117 | 5.1% |
| 2025 | 157 | 157 | 6.4% |
| 2024 | 171 | 169 | 13.0% |
| 2023 | 159 | 156 | 13.5% |
| 2022 | 139 | 139 | 17.3% |
| 2021 | 148 | 144 | 4.2% |
| 2020 | 157 | 156 | 11.5% |
| 2019 | 66 | 66 | 12.1% |