Copper River HWY over Alaganik Slough
FairCounty 063, Alaska · Mile Point 22.3 · Structure no. 0395
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 160 ft
- 2 main spans
- Daily traffic
- 40
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Copper River HWY over Alaganik Slough is a prestressed concrete tee beam carrying Copper River HWY over Alaganik Slough in County 063, Alaska. It was built in 1987, so it is 38 years old, older than the Alaska average of 35.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 40 vehicles a day, roughly 8% of them trucks, projected to reach 50 by 2039. The structure is 160 ft (48.8 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Copper River HWY over Alaganik Slough built?
It was built in 1987, making it 38 years old in 2025.
What condition is Copper River HWY over Alaganik Slough in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does Copper River HWY over Alaganik Slough carry?
About 40 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is Copper River HWY over Alaganik Slough?
The structure is 160 ft (48.8 m) long with a longest span of 79 ft (24.1 m) and a deck 29 ft wide.
Who owns Copper River HWY over Alaganik Slough?
It is owned by the State Highway Agency.