US 50 Ml over Gunnison/blue Mesa Res
Gunnison County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 50 Ml over Gunnison/blue Mesa Res in Gunnison 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 1963, making it 62 years old at the 2025 inventory.
- It carries about 2,800 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 72 of the 101 inventoried bridges in Gunnison County rated fair (71.3%); 5 (5.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: substructure 6 to 5.
- Status change: newly posted for load since 2024.
- Its most recent inspection on record is dated September 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 → (38.46599, -107.25417)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel girder and floorbeam |
| Length | about 1,530 ft |
| Location | 3 Mi E/sapinero/mid Bridg |
| NBI structure number | K-07-B |
| Condition class | Fair |
| Traffic status (item 41) | Posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) |
| Last inspection (item 90) | September 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 Gunnison County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SH 135 Ml over Gunnison River | 1950 | 7,400 | Fair |
| SH 135 Ml over Slate River | 1995 | 7,200 | Fair |
| SH 135 Ml over Slate River | 1995 | 7,200 | Fair |
| US 50 Ml over Gunnison River | 1957 | 6,200 | Fair |
| US 50 Ml over Gunnison River | 1957 | 6,200 | Fair |
| Co Rd 317 over Slate River | 1983 | 5,823 | Fair |
All bridges nearby: Gunnison County, CO bridge conditions · every bridge in Gunnison County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.