Irr:steese Highway over Birch Creek
FairYukon-Koyukuk Census Area, Alaska · Mile Point 141.3 · Structure no. 0355
- Built
- 1957
- 68 years old, rebuilt 2007
- Condition
- Fair
- inspected August 2024
- Type
- Truss - Thru
- Steel
- Length
- 355 ft
- 2 main spans
- Daily traffic
- 110
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Irr:steese Highway over Birch Creek is a steel truss - thru carrying Irr:steese Highway over Birch Creek in Yukon-Koyukuk Census Area, Alaska. It was built in 1957 and reconstructed in 2007, so it is 68 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.
It carries about 110 vehicles a day, roughly 13% of them trucks, projected to reach 150 by 2039. The structure is 355 ft (108.2 m) long and 16 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr:steese Highway over Birch Creek built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2007.
What condition is Irr:steese Highway over Birch Creek 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 August 2024.
How much traffic does Irr:steese Highway over Birch Creek carry?
About 110 vehicles per day (2020 count), of which roughly 13% are trucks.
How long is Irr:steese Highway over Birch Creek?
The structure is 355 ft (108.2 m) long with a longest span of 200 ft (61 m) and a deck 16 ft wide.
Who owns Irr:steese Highway over Birch Creek?
It is owned by the State Highway Agency.