IRR US 89 over Old Flat Wash
GoodCoconino County, Arizona · 3.31 MI N JCT SR 64 · Structure no. 04813
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected August 2022
- Type
- Culvert
- Concrete Continuous
- Length
- 44 ft
- 4 main spans
- Daily traffic
- 7,618
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
IRR US 89 over Old Flat Wash is a concrete continuous culvert carrying IRR US 89 over Old Flat Wash in Coconino County, Arizona. It was built in 1961, so it is 64 years old, older than the Arizona average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,618 vehicles a day, roughly 12% of them trucks, projected to reach 7,628 by 2040. The structure is 44 ft (13.4 m) long and 51 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR US 89 over Old Flat Wash built?
It was built in 1961, making it 64 years old in 2025.
What condition is IRR US 89 over Old Flat Wash in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2022.
How much traffic does IRR US 89 over Old Flat Wash carry?
About 7,618 vehicles per day (2020 count), of which roughly 12% are trucks.
How long is IRR US 89 over Old Flat Wash?
The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 51 ft wide.
Who owns IRR US 89 over Old Flat Wash?
It is owned by the State Highway Agency.