Ni Cnty Rd 64 over South Indian Creek
Niobrara County, Wyoming · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ni Cnty Rd 64 over South Indian Creek in Niobrara County, Wyoming, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1958, making it 67 years old at the 2025 inventory.
- It carries about 40 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 21 of the 34 inventoried bridges in Niobrara County rated fair (61.8%); 1 (2.9%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (substructure 7 to 6).
- Its most recent inspection on record is dated November 2024, on a 12-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 → (42.92858, -104.22711)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 89 ft |
| Location | 8 Miles E. Of Hat Creek |
| NBI structure number | DSA |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wyoming department of transportation.
Busiest bridges in Niobrara County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 18 over Niobrara River | 1988 | 2,942 | Fair |
| US 85 over UPRR | 2016 | 2,942 | Good |
| US 18 over Stockpass | 1970 | 2,406 | Good |
| US 18 over Old Woman Creek | 1971 | 2,150 | Fair |
| US 18 over Old Woman Creek | 1987 | 2,150 | Fair |
| US 18 over Mule Creek | 1988 | 2,150 | Fair |
All bridges nearby: Niobrara County, WY bridge conditions · every bridge in Niobrara County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.