Gravina Island over Gravina Ferry Layup Fac
GoodKetchikan Gateway Borough, Alaska · Ketchikan Airport · Structure no. 1704
- Built
- 2023
- 2 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 140 ft
- 1 main span
- Daily traffic
- 10
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
Gravina Island over Gravina Ferry Layup Fac is a steel stringer/multi-beam or girder carrying Gravina Island over Gravina Ferry Layup Fac in Ketchikan Gateway Borough, Alaska. It was built in 2023, so it is 2 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 10 vehicles a day, roughly 1% of them trucks, projected to reach 12 by 2030. The structure is 140 ft (42.7 m) long and 19 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 | 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 Gravina Island over Gravina Ferry Layup Fac built?
It was built in 2023, making it 2 years old in 2025.
What condition is Gravina Island over Gravina Ferry Layup Fac 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 May 2023.
How much traffic does Gravina Island over Gravina Ferry Layup Fac carry?
About 10 vehicles per day (2012 count), of which roughly 1% are trucks.
How long is Gravina Island over Gravina Ferry Layup Fac?
The structure is 140 ft (42.7 m) long with a longest span of 139 ft (42.5 m) and a deck 19 ft wide.
Who owns Gravina Island over Gravina Ferry Layup Fac?
It is owned by the State Highway Agency and maintained by the County Highway Agency.