US550 Ml over Little Cascade Creek
FairLa Plata County, Colorado · 8.4 MI S Coal Bank Pass · Structure no. N-05-H
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected May 2023
- Type
- Culvert
- Steel
- Length
- 28 ft
- 2 main spans
- Daily traffic
- 3,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US550 Ml over Little Cascade Creek is a steel culvert carrying US550 Ml over Little Cascade Creek in La Plata County, Colorado. It was built in 1980, so it is 45 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 6 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 3,200 vehicles a day, roughly 6% of them trucks, projected to reach 3,392 by 2040. The structure is 28 ft (8.5 m) long and 138 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US550 Ml over Little Cascade Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is US550 Ml over Little Cascade 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 May 2023.
How much traffic does US550 Ml over Little Cascade Creek carry?
About 3,200 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is US550 Ml over Little Cascade Creek?
The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.5 m) and a deck 138 ft wide.
Who owns US550 Ml over Little Cascade Creek?
It is owned by the State Highway Agency.