18th Street over Wash
GoodPima County, Arizona · 550 E Frontage RD · Structure no. 08809
- Built
- 1938
- 87 years old
- Condition
- Good
- inspected August 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 1,278
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
18th Street over Wash is a concrete continuous culvert carrying 18th Street over Wash in Pima County, Arizona. It was built in 1938, so it is 87 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 1,278 vehicles a day, roughly 2% of them trucks, projected to reach 1,288 by 2042. The structure is 21 ft (6.4 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 18th Street over Wash built?
It was built in 1938, making it 87 years old in 2025.
What condition is 18th Street over 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 2023.
How much traffic does 18th Street over Wash carry?
About 1,278 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is 18th Street over Wash?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.
Who owns 18th Street over Wash?
It is owned by the City or Municipal Highway Agency.