Williamsport/Pile over Iliamna River
GoodLake and Peninsula Borough, Alaska · Mile Point 11.0 · Structure no. 2137
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 223 ft
- 2 main spans
- Daily traffic
- 20
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Williamsport/Pile over Iliamna River is a steel continuous stringer/multi-beam or girder carrying Williamsport/Pile over Iliamna River in Lake and Peninsula 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 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 20 vehicles a day, roughly 13% of them trucks, projected to reach 25 by 2034. The structure is 223 ft (68 m) long and 19 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 | 7 Good | Some minor problems. |
| 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 Williamsport/Pile over Iliamna River built?
It was built in 2019, making it 6 years old in 2025.
What condition is Williamsport/Pile over Iliamna River 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 July 2024.
How much traffic does Williamsport/Pile over Iliamna River carry?
About 20 vehicles per day (2019 count), of which roughly 13% are trucks.
How long is Williamsport/Pile over Iliamna River?
The structure is 223 ft (68 m) long with a longest span of 109 ft (33.2 m) and a deck 19 ft wide.
Who owns Williamsport/Pile over Iliamna River?
It is owned by the State Highway Agency.