North Tongass HWY over Carlanna Creek
FairKetchikan Gateway Borough, Alaska · Mile Point 0.3 · Structure no. 0749
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 87 ft
- 1 main span
- Daily traffic
- 9,210
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
North Tongass HWY over Carlanna Creek is a prestressed concrete tee beam carrying North Tongass HWY over Carlanna Creek in Ketchikan Gateway Borough, Alaska. It was built in 1973, so it is 52 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 9,210 vehicles a day, roughly 7% of them trucks, projected to reach 11,200 by 2039. The structure is 87 ft (26.5 m) long and 51 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North Tongass HWY over Carlanna Creek built?
It was built in 1973, making it 52 years old in 2025.
What condition is North Tongass HWY over Carlanna Creek 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 June 2023.
How much traffic does North Tongass HWY over Carlanna Creek carry?
About 9,210 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is North Tongass HWY over Carlanna Creek?
The structure is 87 ft (26.5 m) long with a longest span of 85 ft (25.9 m) and a deck 51 ft wide.
Who owns North Tongass HWY over Carlanna Creek?
It is owned by the State Highway Agency.