IRR BIA RTE N112 over Black Creek
FairApache County, Arizona · In Fort Defiance · Structure no. 00000000000N639
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 211 ft
- 6 main spans
- Daily traffic
- 12,000
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE N112 over Black Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying IRR BIA RTE N112 over Black Creek in Apache County, Arizona. It was built in 1970, so it is 55 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 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 12,000 vehicles a day, roughly 10% of them trucks, projected to reach 12,740 by 2040. The structure is 211 ft (64.2 m) long and 76 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 IRR BIA RTE N112 over Black Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is IRR BIA RTE N112 over Black Creek 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 April 2023.
How much traffic does IRR BIA RTE N112 over Black Creek carry?
About 12,000 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE N112 over Black Creek?
The structure is 211 ft (64.2 m) long with a longest span of 35 ft (10.7 m) and a deck 76 ft wide.
Who owns IRR BIA RTE N112 over Black Creek?
It is owned by the Bureau of Indian Affairs.