Richardson Highway over Tonsina River
FairCounty 066, Alaska · Mile Point 83.1 · Structure no. 0569
- Built
- 1957
- 68 years old, rebuilt 1973
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 254 ft
- 3 main spans
- Daily traffic
- 290
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Richardson Highway over Tonsina River is a steel continuous stringer/multi-beam or girder carrying Richardson Highway over Tonsina River in County 066, Alaska. It was built in 1957 and reconstructed in 1973, 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 290 vehicles a day, roughly 33% of them trucks, projected to reach 340 by 2039. The structure is 254 ft (77.4 m) long and 41 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Richardson Highway over Tonsina River built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1973.
What condition is Richardson Highway over Tonsina 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 August 2023.
How much traffic does Richardson Highway over Tonsina River carry?
About 290 vehicles per day (2020 count), of which roughly 33% are trucks.
How long is Richardson Highway over Tonsina River?
The structure is 254 ft (77.4 m) long with a longest span of 98 ft (29.9 m) and a deck 41 ft wide.
Who owns Richardson Highway over Tonsina River?
It is owned by the State Highway Agency.