Fdr 380 over South Fork
Mineral County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fdr 380 over South Fork in Mineral County, Colorado, 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 1953, making it 72 years old at the 2025 inventory.
- It carries about 143 vehicles a day (traffic count year 1991).
- It is one of 19 of the 26 inventoried bridges in Mineral County rated fair (73.1%); 0 (0.0%) 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 June 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 → (37.59633, -106.72732)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 60 ft |
| Location | .10 Mi on Fdr 380 |
| NBI structure number | 020905000001180 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Mineral County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 160 Ml over S Fk Rio Grande River | 1977 | 2,900 | Fair |
| US 160 Ml over Pass Creek | 1987 | 2,900 | Fair |
| US160 Ml over Lake Fork | 2010 | 2,900 | Good |
| US 160 Ml over Hillside | 1981 | 2,900 | Fair |
| SH 149 Ml over Willow Creek | 1930 | 1,800 | Fair |
| SH 149 Ml over Rio Grande | 1958 | 1,400 | Good |
All bridges nearby: Mineral County, CO bridge conditions · every bridge in Mineral County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.