North Tongass HWY over First Waterfall Creek
GoodKetchikan Gateway Borough, Alaska · Mile Point 13.9 · Structure no. 0414
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 145 ft
- 1 main span
- Daily traffic
- 330
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
North Tongass HWY over First Waterfall Creek is a prestressed concrete tee beam carrying North Tongass HWY over First Waterfall Creek in Ketchikan Gateway Borough, Alaska. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 330 vehicles a day, roughly 10% of them trucks, projected to reach 1,140 by 2039. The structure is 145 ft (44.3 m) long and 39 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North Tongass HWY over First Waterfall Creek built?
It was built in 2019, making it 6 years old in 2025.
What condition is North Tongass HWY over First Waterfall 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 North Tongass HWY over First Waterfall Creek carry?
About 330 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is North Tongass HWY over First Waterfall Creek?
The structure is 145 ft (44.3 m) long with a longest span of 142 ft (43.4 m) and a deck 39 ft wide.
Who owns North Tongass HWY over First Waterfall Creek?
It is owned by the State Highway Agency.