US-64/84 over Rio Chamita
GoodRio Arriba County, New Mexico · 0.2 MI W of NM-17/CHAMA · Structure no. 000000000007649
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Concrete Continuous
- Length
- 85 ft
- 3 main spans
- Daily traffic
- 1,850
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-64/84 over Rio Chamita is a concrete continuous slab carrying US-64/84 over Rio Chamita in Rio Arriba County, New Mexico. It was built in 1977, so it is 48 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 1,850 vehicles a day, roughly 11% of them trucks, projected to reach 2,516 by 2043. The structure is 85 ft (25.9 m) long and 47 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-64/84 over Rio Chamita built?
It was built in 1977, making it 48 years old in 2025.
What condition is US-64/84 over Rio Chamita 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 US-64/84 over Rio Chamita carry?
About 1,850 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is US-64/84 over Rio Chamita?
The structure is 85 ft (25.9 m) long with a longest span of 30 ft (9 m) and a deck 47 ft wide.
Who owns US-64/84 over Rio Chamita?
It is owned by the State Highway Agency.