Extension Road over Drainage Channel
GoodMaricopa County, Arizona · 0.1 MI No of US 60 · Structure no. 06689
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected January 2022
- Type
- Culvert
- Concrete Continuous
- Length
- 32 ft
- 3 main spans
- Daily traffic
- 11,400
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Extension Road over Drainage Channel is a concrete continuous culvert carrying Extension Road over Drainage Channel in Maricopa County, Arizona. It was built in 1978, so it is 47 years old, younger 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 11,400 vehicles a day, roughly 1% of them trucks, projected to reach 11,410 by 2037. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 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 Extension Road over Drainage Channel built?
It was built in 1978, making it 47 years old in 2025.
What condition is Extension Road over Drainage Channel 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 January 2022.
How much traffic does Extension Road over Drainage Channel carry?
About 11,400 vehicles per day (2017 count), of which roughly 1% are trucks.
How long is Extension Road over Drainage Channel?
The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).
Who owns Extension Road over Drainage Channel?
It is owned by the State Highway Agency.