Richardson Highway over Gulkana River
PoorCounty 066, Alaska · Mile Point 129.8 · Structure no. 0574
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 405 ft
- 3 main spans
- Daily traffic
- 880
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Richardson Highway over Gulkana River is a steel continuous stringer/multi-beam or girder carrying Richardson Highway over Gulkana River in County 066, Alaska. It was built in 1974, so it is 51 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.
It carries about 880 vehicles a day, roughly 21% of them trucks, projected to reach 1,080 by 2039. The structure is 405 ft (123.4 m) long and 35 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Richardson Highway over Gulkana River built?
It was built in 1974, making it 51 years old in 2025.
What condition is Richardson Highway over Gulkana River 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 2023.
How much traffic does Richardson Highway over Gulkana River carry?
About 880 vehicles per day (2020 count), of which roughly 21% are trucks.
How long is Richardson Highway over Gulkana River?
The structure is 405 ft (123.4 m) long with a longest span of 160 ft (48.8 m) and a deck 35 ft wide.
Who owns Richardson Highway over Gulkana River?
It is owned by the State Highway Agency.