Copper River HWY over Mid Fork 18 Mile Creek
GoodCounty 063, Alaska · Mile Point 18.2 · Structure no. 4130
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected September 2024
- Type
- Culvert
- Aluminum, Wrought Iron, or Cast Iron
- Length
- 24 ft
- 1 main span
- Daily traffic
- 170
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Copper River HWY over Mid Fork 18 Mile Creek is a aluminum, wrought iron, or cast iron culvert carrying Copper River HWY over Mid Fork 18 Mile Creek in County 063, Alaska. It was built in 2021, so it is 4 years old, younger 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 170 vehicles a day, roughly 8% of them trucks, projected to reach 270 by 2039. The structure is 24 ft (7.3 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Copper River HWY over Mid Fork 18 Mile Creek built?
It was built in 2021, making it 4 years old in 2025.
What condition is Copper River HWY over Mid Fork 18 Mile 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 September 2024.
How much traffic does Copper River HWY over Mid Fork 18 Mile Creek carry?
About 170 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is Copper River HWY over Mid Fork 18 Mile Creek?
The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6 m).
Who owns Copper River HWY over Mid Fork 18 Mile Creek?
It is owned by the State Highway Agency.