US 550 Ml over Horsefly Creek
Montrose County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 550 Ml over Horsefly Creek in Montrose County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1994 and reconstructed in 2024, making it 31 years old at the 2025 inventory.
- It carries about 13,000 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 42 of the 117 inventoried bridges in Montrose County rated good (35.9%); 3 (2.6%) 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 → (38.42276, -107.85765)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 45 ft |
| Location | 7.5 Mi No of Ouray-montro |
| NBI structure number | K-05-BV |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Montrose County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 550 Ml over Cedar Wash | 1936 | 25,000 | Fair |
| US 50 Ml over Cedar Creek | 1958 | 14,000 | Fair |
| US 50 Ml over Loutzenheizer Wash | 1989 | 13,000 | Fair |
| SH 90 Ml over Uncompahgre River | 1969 | 12,000 | Fair |
| US 550 Ml over Montrose+delta Canal | 1992 | 11,000 | Good |
| US 550 Ml Nbnd over Uncompahgre River | 1976 | 6,500 | Good |
All bridges nearby: Montrose County, CO bridge conditions · every bridge in Montrose County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.