US-550 over Unnamed Waterway
GoodSan Juan County, New Mexico · 5.50 MI N of NM-516 · Structure no. 000000000006415
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 11,176
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-550 over Unnamed Waterway is a concrete culvert carrying US-550 over Unnamed Waterway in San Juan County, New Mexico. It was built in 1962, so it is 63 years old, older than the New Mexico average of 51.5 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 11,176 vehicles a day, roughly 17% of them trucks, projected to reach 15,199 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 39.8 mi (64 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-550 over Unnamed Waterway built?
It was built in 1962, making it 63 years old in 2025.
What condition is US-550 over Unnamed Waterway 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 over Unnamed Waterway carry?
About 11,176 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-550 over Unnamed Waterway?
The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).
Who owns US-550 over Unnamed Waterway?
It is owned by the State Highway Agency.