Knudson Cove Road over Trollers Creek
GoodKetchikan Gateway Borough, Alaska · Mile Point 0.5 · Structure no. 0864
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 124 ft
- 1 main span
- Daily traffic
- 550
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Knudson Cove Road over Trollers Creek is a prestressed concrete tee beam carrying Knudson Cove Road over Trollers Creek in Ketchikan Gateway Borough, Alaska. It was built in 2017, so it is 8 years old, younger than the Alaska average of 35.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 550 vehicles a day, roughly 4% of them trucks, projected to reach 1,230 by 2039. The structure is 124 ft (37.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Deck | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Knudson Cove Road over Trollers Creek built?
It was built in 2017, making it 8 years old in 2025.
What condition is Knudson Cove Road over Trollers Creek 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 Knudson Cove Road over Trollers Creek carry?
About 550 vehicles per day (2020 count), of which roughly 4% are trucks.
How long is Knudson Cove Road over Trollers Creek?
The structure is 124 ft (37.8 m) long with a longest span of 121 ft (36.9 m) and a deck 31 ft wide.
Who owns Knudson Cove Road over Trollers Creek?
It is owned by the State Highway Agency.