NM-464 over Road Canyon
GoodGrant County, New Mexico · 18.5 MI N of US-70 · Structure no. 000000000005873
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected August 2024
- Type
- Culvert
- Concrete
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 30
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-464 over Road Canyon is a concrete culvert carrying NM-464 over Road Canyon in Grant County, New Mexico. It was built in 1958, so it is 67 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 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2043. The structure is 33 ft (10 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NM-464 over Road Canyon built?
It was built in 1958, making it 67 years old in 2025.
What condition is NM-464 over Road Canyon 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 August 2024.
How much traffic does NM-464 over Road Canyon carry?
About 30 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is NM-464 over Road Canyon?
The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).
Who owns NM-464 over Road Canyon?
It is owned by the State Highway Agency.