Thane Road over Sheep Creek
FairJuneau City and Borough, Alaska · Mile Point 4.1 · Structure no. 0418
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 138 ft
- 2 main spans
- Daily traffic
- 430
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Thane Road over Sheep Creek is a prestressed concrete tee beam carrying Thane Road over Sheep Creek in Juneau City and Borough, Alaska. It was built in 1981, so it is 44 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 5 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 430 vehicles a day, roughly 5% of them trucks, projected to reach 780 by 2039. The structure is 138 ft (42.1 m) long and 33 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thane Road over Sheep Creek built?
It was built in 1981, making it 44 years old in 2025.
What condition is Thane Road over Sheep 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 Thane Road over Sheep Creek carry?
About 430 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Thane Road over Sheep Creek?
The structure is 138 ft (42.1 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.
Who owns Thane Road over Sheep Creek?
It is owned by the State Highway Agency.