IRR I-8 WB over SR 85
FairMaricopa County, Arizona · JCT SR 85 · Structure no. 01557
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected February 2023
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 171 ft
- 3 main spans
- Daily traffic
- 1,550
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
IRR I-8 WB over SR 85 is a concrete continuous box beam or girders - single or spread carrying IRR I-8 WB over SR 85 in Maricopa County, Arizona. It was built in 1971, so it is 54 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 1,550 vehicles a day, roughly 26% of them trucks, projected to reach 1,560 by 2041. The structure is 171 ft (52.1 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR I-8 WB over SR 85 built?
It was built in 1971, making it 54 years old in 2025.
What condition is IRR I-8 WB over SR 85 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 2023.
How much traffic does IRR I-8 WB over SR 85 carry?
About 1,550 vehicles per day (2021 count), of which roughly 26% are trucks.
How long is IRR I-8 WB over SR 85?
The structure is 171 ft (52.1 m) long with a longest span of 86 ft (26.2 m) and a deck 41 ft wide.
Who owns IRR I-8 WB over SR 85?
It is owned by the State Highway Agency.