County Road 20R over Dolores River
San Miguel County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 20R over Dolores River in San Miguel County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 2 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 37 of the 59 inventoried bridges in San Miguel County rated fair (62.7%); 1 (1.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (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.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- 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 → (38.15353, -108.88125)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel through truss |
| Length | about 75 ft |
| Location | 14.1 Mi NW of SH 141 |
| NBI structure number | SMG20R-14.5-15 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in San Miguel County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 145 Ml over San Miguel River | 1960 | 7,600 | Fair |
| Mtn Village Blv over Pedestrian/skier | 1990 | 5,331 | Good |
| SH 145 Ml over Leopard Creek | 2013 | 4,700 | Good |
| Mtn Village Blv over Pedestrian / Skier | 1985 | 4,499 | Fair |
| Mtn Village Blv over Pedestrian / Skier | 1990 | 2,195 | Good |
| SH 145 Ml over Goodenough Gulch | 1939 | 1,900 | Fair |
All bridges nearby: San Miguel County, CO bridge conditions · every bridge in San Miguel County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.