US 550 Ml over Chaffee Gulch
GoodOuray County, Colorado · 8.7 MI N of JCT SH 62 · Structure no. K-05-AC
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 82 ft
- 1 main span
- Daily traffic
- 8,300
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 550 Ml over Chaffee Gulch is a prestressed concrete stringer/multi-beam or girder carrying US 550 Ml over Chaffee Gulch in Ouray County, Colorado. It was built in 1975, so it is 50 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 8,300 vehicles a day, roughly 6% of them trucks, projected to reach 9,794 by 2040. The structure is 82 ft (24.9 m) long and 45 ft wide. If it were closed, the detour would be 123.7 mi (199 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 550 Ml over Chaffee Gulch built?
It was built in 1975, making it 50 years old in 2025.
What condition is US 550 Ml over Chaffee Gulch 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 June 2023.
How much traffic does US 550 Ml over Chaffee Gulch carry?
About 8,300 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is US 550 Ml over Chaffee Gulch?
The structure is 82 ft (24.9 m) long with a longest span of 79 ft (24 m) and a deck 45 ft wide.
Who owns US 550 Ml over Chaffee Gulch?
It is owned by the State Highway Agency.