US 550 Ml over Roadway Game Underpass
GoodLa Plata County, Colorado · 3 MI N. of Hermosa · Structure no. O-05-AU
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Steel
- Length
- 21 ft
- 1 main span
- Daily traffic
- 3,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 550 Ml over Roadway Game Underpass is a steel culvert carrying US 550 Ml over Roadway Game Underpass in La Plata County, Colorado. It was built in 1977, so it is 48 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 3,200 vehicles a day, roughly 6% of them trucks, projected to reach 3,392 by 2040. The structure is 21 ft (6.3 m) long and 108 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 550 Ml over Roadway Game Underpass built?
It was built in 1977, making it 48 years old in 2025.
What condition is US 550 Ml over Roadway Game Underpass in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.
How much traffic does US 550 Ml over Roadway Game Underpass carry?
About 3,200 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is US 550 Ml over Roadway Game Underpass?
The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m) and a deck 108 ft wide.
Who owns US 550 Ml over Roadway Game Underpass?
It is owned by the State Highway Agency.