IRR/US-491-NBL over Pena Blanca Arroyo
GoodSan Juan County, New Mexico · 1.86 M N Road to Toadlena · Structure no. 000000000009339
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 131 ft
- 1 main span
- Daily traffic
- 6,055
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR/US-491-NBL over Pena Blanca Arroyo is a prestressed concrete stringer/multi-beam or girder carrying IRR/US-491-NBL over Pena Blanca Arroyo in San Juan County, New Mexico. It was built in 2010, so it is 15 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 6,055 vehicles a day, roughly 17% of them trucks, projected to reach 8,234 by 2043. The structure is 131 ft (39.9 m) long and 39 ft wide.
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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR/US-491-NBL over Pena Blanca Arroyo built?
It was built in 2010, making it 15 years old in 2025.
What condition is IRR/US-491-NBL over Pena Blanca Arroyo 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 March 2023.
How much traffic does IRR/US-491-NBL over Pena Blanca Arroyo carry?
About 6,055 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is IRR/US-491-NBL over Pena Blanca Arroyo?
The structure is 131 ft (39.9 m) long with a longest span of 8 ft (2.4 m) and a deck 39 ft wide.
Who owns IRR/US-491-NBL over Pena Blanca Arroyo?
It is owned by the State Highway Agency.