IRR BIA RTE N12 over Twin Buttes Wash
FairMcKinley County, New Mexico · 5 MI NE of Fort Defiance · Structure no. 00000000000N664
- Built
- 1958
- 67 years old, rebuilt 1994
- Condition
- Fair
- inspected March 2023
- Type
- Culvert
- Steel
- Length
- 59 ft
- 3 main spans
- Daily traffic
- 7,111
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE N12 over Twin Buttes Wash is a steel culvert carrying IRR BIA RTE N12 over Twin Buttes Wash in McKinley County, New Mexico. It was built in 1958 and reconstructed in 1994, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,111 vehicles a day, roughly 10% of them trucks, projected to reach 8,320 by 2040. The structure is 59 ft (18 m) long and 73 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE N12 over Twin Buttes Wash built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1994.
What condition is IRR BIA RTE N12 over Twin Buttes Wash in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.
How much traffic does IRR BIA RTE N12 over Twin Buttes Wash carry?
About 7,111 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE N12 over Twin Buttes Wash?
The structure is 59 ft (18 m) long with a longest span of 16 ft (4.8 m) and a deck 73 ft wide.
Who owns IRR BIA RTE N12 over Twin Buttes Wash?
It is owned by the Bureau of Indian Affairs.