US 550 Nbnd Ml over Drainage Way
GoodLa Plata County, Colorado · 1.2 MI from Nm Border · Structure no. P-05-AH
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 57 ft
- 1 main span
- Daily traffic
- 4,050
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 550 Nbnd Ml over Drainage Way is a prestressed concrete stringer/multi-beam or girder carrying US 550 Nbnd Ml over Drainage Way in La Plata County, Colorado. It was built in 2010, so it is 15 years old, younger 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 4,050 vehicles a day, roughly 7% of them trucks, projected to reach 5,346 by 2040. The structure is 57 ft (17.4 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
| 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 Nbnd Ml over Drainage Way built?
It was built in 2010, making it 15 years old in 2025.
What condition is US 550 Nbnd Ml over Drainage Way 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 October 2023.
How much traffic does US 550 Nbnd Ml over Drainage Way carry?
About 4,050 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is US 550 Nbnd Ml over Drainage Way?
The structure is 57 ft (17.4 m) long with a longest span of 55 ft (16.7 m) and a deck 51 ft wide.
Who owns US 550 Nbnd Ml over Drainage Way?
It is owned by the State Highway Agency.