Irr:airport Road over Unnamed Creek Koliganek
PoorPosted for loadDillingham Census Area, Alaska · Koliganek · Structure no. 1556
- Built
- 1980
- 45 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 40 ft
- 1 main span
- Daily traffic
- 50
- 2018 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Irr:airport Road over Unnamed Creek Koliganek is a wood or timber stringer/multi-beam or girder carrying Irr:airport Road over Unnamed Creek Koliganek in Dillingham Census Area, Alaska. It was built in 1980, so it is 45 years old, older than the Alaska average of 35.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 70 by 2035. The structure is 40 ft (12.2 m) long and 15 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr:airport Road over Unnamed Creek Koliganek built?
It was built in 1980, making it 45 years old in 2025.
What condition is Irr:airport Road over Unnamed Creek Koliganek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Irr:airport Road over Unnamed Creek Koliganek carry?
About 50 vehicles per day (2018 count), of which roughly 1% are trucks.
How long is Irr:airport Road over Unnamed Creek Koliganek?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 15 ft wide.
Who owns Irr:airport Road over Unnamed Creek Koliganek?
It is owned by the City or Municipal Highway Agency.