US-491 over Unnamed Waterway
FairMcKinley County, New Mexico · 8.9 MI N of LOOP31/GALLUP · Structure no. 000000000005792
- Built
- 1955
- 70 years old
- Condition
- Fair
- inspected January 2024
- Type
- Culvert
- Concrete
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 10,387
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-491 over Unnamed Waterway is a concrete culvert carrying US-491 over Unnamed Waterway in McKinley County, New Mexico. It was built in 1955, so it is 70 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 10,387 vehicles a day, roughly 7% of them trucks, projected to reach 14,126 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 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-491 over Unnamed Waterway built?
It was built in 1955, making it 70 years old in 2025.
What condition is US-491 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 January 2024.
How much traffic does US-491 over Unnamed Waterway carry?
About 10,387 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is US-491 over Unnamed Waterway?
The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).
Who owns US-491 over Unnamed Waterway?
It is owned by the State Highway Agency.