Dalton Highway over Yukon River
FairYukon-Koyukuk Census Area, Alaska · Mile Point 55.8 · Structure no. 0271
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected July 2024
- Type
- Orthotropic
- Steel Continuous
- Length
- 2,295 ft
- 6 main spans
- Daily traffic
- 140
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Dalton Highway over Yukon River is a steel continuous orthotropic carrying Dalton Highway over Yukon River in Yukon-Koyukuk Census Area, Alaska. It was built in 1975, so it is 50 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 6 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 140 vehicles a day, roughly 61% of them trucks, projected to reach 170 by 2039. The structure is 2,295 ft (699.5 m) long and 31 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Dalton Highway over Yukon River built?
It was built in 1975, making it 50 years old in 2025.
What condition is Dalton Highway over Yukon River 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 July 2024.
How much traffic does Dalton Highway over Yukon River carry?
About 140 vehicles per day (2020 count), of which roughly 61% are trucks.
How long is Dalton Highway over Yukon River?
The structure is 2,295 ft (699.5 m) long with a longest span of 410 ft (125 m) and a deck 31 ft wide.
Who owns Dalton Highway over Yukon River?
It is owned by the State Highway Agency.