IRR/US-491 over Sheep Springs Wash
GoodSan Juan County, New Mexico · 0.2 MI S of NM-134 · Structure no. 000000000007865
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Concrete
- Length
- 55 ft
- 4 main spans
- Daily traffic
- 5,936
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR/US-491 over Sheep Springs Wash is a concrete culvert carrying IRR/US-491 over Sheep Springs Wash in San Juan County, New Mexico. It was built in 1976, so it is 49 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 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 5,936 vehicles a day, roughly 17% of them trucks, projected to reach 8,072 by 2043. The structure is 55 ft (16.8 m) long. If it were closed, the detour would be 98.8 mi (159 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 IRR/US-491 over Sheep Springs Wash built?
It was built in 1976, making it 49 years old in 2025.
What condition is IRR/US-491 over Sheep Springs Wash 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 January 2024.
How much traffic does IRR/US-491 over Sheep Springs Wash carry?
About 5,936 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is IRR/US-491 over Sheep Springs Wash?
The structure is 55 ft (16.8 m) long with a longest span of 10 ft (3 m).
Who owns IRR/US-491 over Sheep Springs Wash?
It is owned by the State Highway Agency.