Arizona Street over Black Knob Drainage
PoorCochise County, Arizona · 1.7 MI S JCT SR 80 · Structure no. 09283
- Built
- 1917
- 108 years old
- Condition
- Poor
- inspected January 2025
- Type
- Culvert
- Concrete Continuous
- Length
- 26 ft
- 3 main spans
- Daily traffic
- 1,000
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Arizona Street over Black Knob Drainage is a concrete continuous culvert carrying Arizona Street over Black Knob Drainage in Cochise County, Arizona. It was built in 1917, so it is 108 years old, older than the Arizona average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,010 by 2041. The structure is 26 ft (7.9 m) long and 96 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Arizona Street over Black Knob Drainage built?
It was built in 1917, making it 108 years old in 2025.
What condition is Arizona Street over Black Knob Drainage in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.
How much traffic does Arizona Street over Black Knob Drainage carry?
About 1,000 vehicles per day (2021 count), of which roughly 1% are trucks.
How long is Arizona Street over Black Knob Drainage?
The structure is 26 ft (7.9 m) long with a longest span of 7 ft (2.1 m) and a deck 96 ft wide.
Who owns Arizona Street over Black Knob Drainage?
It is owned by the City or Municipal Highway Agency.