Thomas Street over Thomas Trestle
FairPosted for loadKetchikan Gateway Borough, Alaska · Mile Point 0.1 · Structure no. 1473
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 384 ft
- 24 main spans
- Daily traffic
- 400
- 2018 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Thomas Street over Thomas Trestle is a wood or timber stringer/multi-beam or girder carrying Thomas Street over Thomas Trestle in Ketchikan Gateway Borough, Alaska. It was built in 1960, so it is 65 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. Its operating status is: posted for load restriction.
It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 480 by 2035. The structure is 384 ft (117 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thomas Street over Thomas Trestle built?
It was built in 1960, making it 65 years old in 2025.
What condition is Thomas Street over Thomas Trestle 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 Thomas Street over Thomas Trestle carry?
About 400 vehicles per day (2018 count), of which roughly 1% are trucks.
How long is Thomas Street over Thomas Trestle?
The structure is 384 ft (117 m) long with a longest span of 17 ft (5.2 m) and a deck 20 ft wide.
Who owns Thomas Street over Thomas Trestle?
It is owned by the City or Municipal Highway Agency.