US 550 Ml over Cow Creek
FairOuray County, Colorado · 7.7 MI N of SH 62 · Structure no. L-05-K
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected June 2023
- Type
- Culvert
- Concrete
- Length
- 48 ft
- 3 main spans
- Daily traffic
- 8,300
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 550 Ml over Cow Creek is a concrete culvert carrying US 550 Ml over Cow Creek in Ouray County, Colorado. It was built in 1979, so it is 46 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 8,300 vehicles a day, roughly 6% of them trucks, projected to reach 9,794 by 2040. The structure is 48 ft (14.6 m) long and 142 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 550 Ml over Cow Creek built?
It was built in 1979, making it 46 years old in 2025.
What condition is US 550 Ml over Cow Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does US 550 Ml over Cow Creek carry?
About 8,300 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is US 550 Ml over Cow Creek?
The structure is 48 ft (14.6 m) long with a longest span of 18 ft (5.4 m) and a deck 142 ft wide.
Who owns US 550 Ml over Cow Creek?
It is owned by the State Highway Agency.