Twin Lakes Drive over Salmon Creek
GoodJuneau City and Borough, Alaska · Mile Point 1.6 · Structure no. 0787
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 126 ft
- 1 main span
- Daily traffic
- 2,450
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Twin Lakes Drive over Salmon Creek is a prestressed concrete tee beam carrying Twin Lakes Drive over Salmon Creek in Juneau City and Borough, Alaska. It was built in 1989, so it is 36 years old, older 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 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 2,450 vehicles a day, roughly 5% of them trucks, projected to reach 3,300 by 2039. The structure is 126 ft (38.4 m) long and 64 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | 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 Twin Lakes Drive over Salmon Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Twin Lakes Drive over Salmon 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 Twin Lakes Drive over Salmon Creek carry?
About 2,450 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Twin Lakes Drive over Salmon Creek?
The structure is 126 ft (38.4 m) long with a longest span of 45 ft (13.7 m) and a deck 64 ft wide.
Who owns Twin Lakes Drive over Salmon Creek?
It is owned by the State Highway Agency.