IRR BIA RTE 1 over Main Irrigation Canal
FairLa Paz County, Arizona · 3.5 KM W of Az HWY 95 · Structure no. 00000000000H003
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete
- Length
- 76 ft
- 3 main spans
- Daily traffic
- 3,895
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 1 over Main Irrigation Canal is a concrete stringer/multi-beam or girder carrying IRR BIA RTE 1 over Main Irrigation Canal in La Paz County, Arizona. It was built in 1962, so it is 63 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 3,895 vehicles a day, roughly 15% of them trucks, projected to reach 4,750 by 2044. The structure is 76 ft (23.2 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 1 over Main Irrigation Canal built?
It was built in 1962, making it 63 years old in 2025.
What condition is IRR BIA RTE 1 over Main Irrigation Canal 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 1 over Main Irrigation Canal carry?
About 3,895 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is IRR BIA RTE 1 over Main Irrigation Canal?
The structure is 76 ft (23.2 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.
Who owns IRR BIA RTE 1 over Main Irrigation Canal?
It is owned by the Bureau of Indian Affairs.