SD045 over Ck
Buffalo County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD045 over Ck in Buffalo County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 755 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 16 of the 25 inventoried bridges in Buffalo County rated fair (64.0%); 1 (4.0%) 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 → (44.03788, -98.98621)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 24 ft |
| Location | 2.8 S Jct Sd 34 |
| NBI structure number | 000000009290108 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Buffalo County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Bia Rte 4 over Campbell Creek | 2013 | 1,720 | Good |
| SD045 over Crow Ck | 1960 | 949 | Fair |
| Irr SD050 over Wolf Ck | 1954 | 928 | Fair |
| Irr SD050 over Crow Ck | 1999 | 928 | Good |
| Irr SD034 over East Fork Soldier Ck | 1962 | 918 | Fair |
| Irr SD047 over Soldier Ck | 1963 | 917 | Fair |
All bridges nearby: Buffalo County, SD bridge conditions · every bridge in Buffalo County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.