US-550 over Unnamed Waterway
FairSandoval County, New Mexico · 18.8 MI NW of JCT I-25 · Structure no. 000000000007563
- Built
- 1975
- 50 years old, rebuilt 1999
- Condition
- Fair
- inspected November 2023
- Type
- Culvert
- Concrete
- Length
- 31 ft
- 3 main spans
- Daily traffic
- 9,796
- 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 Sandoval County, New Mexico. It was built in 1975 and reconstructed in 1999, so it is 50 years old, younger than the New Mexico average of 51.5 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 9,796 vehicles a day, roughly 17% of them trucks, projected to reach 13,322 by 2043. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 98.8 mi (159 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 | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-550 over Unnamed Waterway built?
It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1999.
What condition is US-550 over Unnamed Waterway 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 November 2023.
How much traffic does US-550 over Unnamed Waterway carry?
About 9,796 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-550 over Unnamed Waterway?
The structure is 31 ft (9.5 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.