SR 77 over El Capitan Canyon
GoodGila County, Arizona · 18.6 MI N JCT SR 177 · Structure no. 04401
- Built
- 1955
- 70 years old
- Condition
- Good
- inspected June 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 43 ft
- 4 main spans
- Daily traffic
- 1,686
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
SR 77 over El Capitan Canyon is a concrete continuous culvert carrying SR 77 over El Capitan Canyon in Gila County, Arizona. It was built in 1955, so it is 70 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 1,686 vehicles a day, roughly 10% of them trucks, projected to reach 1,696 by 2039. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 24.9 mi (40 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 SR 77 over El Capitan Canyon built?
It was built in 1955, making it 70 years old in 2025.
What condition is SR 77 over El Capitan Canyon 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 June 2023.
How much traffic does SR 77 over El Capitan Canyon carry?
About 1,686 vehicles per day (2017 count), of which roughly 10% are trucks.
How long is SR 77 over El Capitan Canyon?
The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m).
Who owns SR 77 over El Capitan Canyon?
It is owned by the State Highway Agency.