US-491 NB over Pena Blanca Wash
GoodSan Juan County, New Mexico · 23.6 M S JCT 64/491 · Structure no. 000000000009338
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 131 ft
- 2 main spans
- Daily traffic
- 7,932
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-491 NB over Pena Blanca Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying US-491 NB over Pena Blanca Wash in San Juan County, New Mexico. It was built in 2014, so it is 11 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 7,932 vehicles a day, roughly 17% of them trucks, projected to reach 10,787 by 2043. The structure is 131 ft (39.9 m) long and 39 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-491 NB over Pena Blanca Wash built?
It was built in 2014, making it 11 years old in 2025.
What condition is US-491 NB over Pena Blanca 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 September 2024.
How much traffic does US-491 NB over Pena Blanca Wash carry?
About 7,932 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-491 NB over Pena Blanca Wash?
The structure is 131 ft (39.9 m) long with a longest span of 66 ft (20.1 m) and a deck 39 ft wide.
Who owns US-491 NB over Pena Blanca Wash?
It is owned by the State Highway Agency.