SD020 over Ck
Faulk County, South Dakota · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SD020 over Ck in Faulk County, South Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 661 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 27 of the 46 inventoried bridges in Faulk County rated fair (58.7%); 11 (23.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- 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 → (45.17572, -99.02168)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 86 ft |
| Location | 0.8 S Jct Sd 45N |
| NBI structure number | 000000025270049 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Dakota department of transportation.
Busiest bridges in Faulk County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SD045 over South Fork Snake Ck | 1975 | 855 | Fair |
| US212 over Trib Ford Lake | 2021 | 717 | Good |
| US212 over Trib S Fork Snake Ck | 2021 | 717 | Good |
| US212 over Dry Run Ck | 2008 | 710 | Fair |
| US212 over South Fork Snake Ck | 1939 | 688 | Poor |
| SD020 over North Fork Snake Ck | 1959 | 578 | Fair |
All bridges nearby: Faulk County, SD bridge conditions · every bridge in Faulk County · South Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.