IRR BIA RTE 4 over Oraibi Wash
FairNavajo County, Arizona · 23 KM North of HWY 264 · Structure no. 00000000000H220
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 225 ft
- 3 main spans
- Daily traffic
- 165
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 4 over Oraibi Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying IRR BIA RTE 4 over Oraibi Wash in Navajo County, Arizona. It was built in 1979, so it is 46 years old, younger 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 165 vehicles a day, roughly 7% of them trucks, projected to reach 193 by 2044. The structure is 225 ft (68.7 m) long and 41 ft wide. If it were closed, the detour would be 39.1 mi (63 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 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 4 over Oraibi Wash built?
It was built in 1979, making it 46 years old in 2025.
What condition is IRR BIA RTE 4 over Oraibi 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 December 2024.
How much traffic does IRR BIA RTE 4 over Oraibi Wash carry?
About 165 vehicles per day (2024 count), of which roughly 7% are trucks.
How long is IRR BIA RTE 4 over Oraibi Wash?
The structure is 225 ft (68.7 m) long with a longest span of 76 ft (23.3 m) and a deck 41 ft wide.
Who owns IRR BIA RTE 4 over Oraibi Wash?
It is owned by the Bureau of Indian Affairs.