Dalton Highway over North Fork Bonanza Creek
GoodYukon-Koyukuk Census Area, Alaska · Mile Point 125.4 · Structure no. 1256
- Built
- 1972
- 53 years old, rebuilt 1992
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 120 ft
- 2 main spans
- Daily traffic
- 140
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Dalton Highway over North Fork Bonanza Creek is a steel stringer/multi-beam or girder carrying Dalton Highway over North Fork Bonanza Creek in Yukon-Koyukuk Census Area, Alaska. It was built in 1972 and reconstructed in 1992, so it is 53 years old, older 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 140 vehicles a day, roughly 61% of them trucks, projected to reach 170 by 2039. The structure is 120 ft (36.6 m) long and 28 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Dalton Highway over North Fork Bonanza Creek built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1992.
What condition is Dalton Highway over North Fork Bonanza Creek 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 Dalton Highway over North Fork Bonanza Creek carry?
About 140 vehicles per day (2020 count), of which roughly 61% are trucks.
How long is Dalton Highway over North Fork Bonanza Creek?
The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.
Who owns Dalton Highway over North Fork Bonanza Creek?
It is owned by the State Highway Agency.