SD022 over Cobb Ck
Deuel County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD022 over Cobb Ck in Deuel County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1955, making it 70 years old at the 2025 inventory.
- It carries about 932 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 43 of the 72 inventoried bridges in Deuel County rated fair (59.7%); 13 (18.1%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (44.74713, -96.50659)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 97 ft |
| Location | 8.7 E Jct Sd 15 |
| NBI structure number | 000000020187160 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Deuel County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I029 over Deer Ck | 1971 | 7,560 | Fair |
| I029 S over 471 Ave | 1973 | 4,870 | Fair |
| I029 N over 471 Ave | 1973 | 4,870 | Fair |
| I029 S over Peg Munky Run Ck | 1973 | 4,870 | Fair |
| I029 N over Peg Munky Run Ck | 1973 | 4,870 | Fair |
| I029 S over 184 St | 1973 | 4,830 | Fair |
All bridges nearby: Deuel County, SD bridge conditions · every bridge in Deuel County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.