IRR BIA RTE 55 over Y31 Canyon
FairNavajo County, Arizona · 11.4KM SE of White River · Structure no. 00000000000H095
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected February 2024
- Type
- Culvert
- Steel
- Length
- 33 ft
- 4 main spans
- Daily traffic
- 100
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 55 over Y31 Canyon is a steel culvert carrying IRR BIA RTE 55 over Y31 Canyon in Navajo County, Arizona. It was built in 1974, so it is 51 years old, older than the Arizona average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 120 by 2044. The structure is 33 ft (10.2 m) long and 67 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 55 over Y31 Canyon built?
It was built in 1974, making it 51 years old in 2025.
What condition is IRR BIA RTE 55 over Y31 Canyon 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 February 2024.
How much traffic does IRR BIA RTE 55 over Y31 Canyon carry?
About 100 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is IRR BIA RTE 55 over Y31 Canyon?
The structure is 33 ft (10.2 m) long with a longest span of 6 ft (1.8 m) and a deck 67 ft wide.
Who owns IRR BIA RTE 55 over Y31 Canyon?
It is owned by the Bureau of Indian Affairs.