IRR/NM-399 over Arroyo De LA Mesilla
GoodRio Arriba County, New Mexico · 2.55 MI SW of JCT US-84 · Structure no. 000000000008309
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected June 2024
- Type
- Culvert
- Steel
- Length
- 38 ft
- 1 main span
- Daily traffic
- 3,198
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR/NM-399 over Arroyo De LA Mesilla is a steel culvert carrying IRR/NM-399 over Arroyo De LA Mesilla in Rio Arriba County, New Mexico. It was built in 1979, so it is 46 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 3,198 vehicles a day, roughly 5% of them trucks, projected to reach 4,349 by 2043. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 24.9 mi (40 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR/NM-399 over Arroyo De LA Mesilla built?
It was built in 1979, making it 46 years old in 2025.
What condition is IRR/NM-399 over Arroyo De LA Mesilla 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 June 2024.
How much traffic does IRR/NM-399 over Arroyo De LA Mesilla carry?
About 3,198 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is IRR/NM-399 over Arroyo De LA Mesilla?
The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m).
Who owns IRR/NM-399 over Arroyo De LA Mesilla?
It is owned by the State Highway Agency.