US-550 over Unnamed Waterway
FairSandoval County, New Mexico · 9.1 NW JCT I-25/US-550 · Structure no. 000000000006946
- Built
- 1970
- 55 years old, rebuilt 1989
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 158 ft
- 3 main spans
- Daily traffic
- 27,379
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-550 over Unnamed Waterway is a prestressed concrete stringer/multi-beam or girder carrying US-550 over Unnamed Waterway in Sandoval County, New Mexico. It was built in 1970 and reconstructed in 1989, so it is 55 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 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 27,379 vehicles a day, roughly 17% of them trucks, projected to reach 37,235 by 2043. The structure is 158 ft (48.2 m) long and 68 ft wide. If it were closed, the detour would be 11.8 mi (19 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 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 1970, making it 55 years old in 2025. It was reconstructed in 1989.
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 March 2023.
How much traffic does US-550 over Unnamed Waterway carry?
About 27,379 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-550 over Unnamed Waterway?
The structure is 158 ft (48.2 m) long with a longest span of 51 ft (15.5 m) and a deck 68 ft wide.
Who owns US-550 over Unnamed Waterway?
It is owned by the State Highway Agency.