Fdr 578 over Dolores River
Dolores County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fdr 578 over Dolores River in Dolores County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1955 and reconstructed in 2000, making it 70 years old at the 2025 inventory.
- It carries about 69 vehicles a day (traffic count year 2002).
- It is one of 4 of the 27 inventoried bridges in Dolores County rated good (14.8%); 3 (11.1%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.76876, -107.98717)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 50 ft |
| Location | 6.0 Mi Nne of Rico |
| NBI structure number | 021302000001011 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Dolores County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 491 Ml over Dove Creek | 1935 | 4,700 | Fair |
| US 491 Ml over Alkali Creek | 1937 | 3,400 | Poor |
| US 491 Ml over Cross Canyon | 1937 | 3,400 | Fair |
| US 491ML over Sharps Creek | 1937 | 3,400 | Fair |
| US 491 Ml over Draw | 1937 | 3,400 | Fair |
| US 491 Ml over Monument Creek | 1958 | 3,200 | Fair |
All bridges nearby: Dolores County, CO bridge conditions · every bridge in Dolores County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.