County RD 4C over Lampa Creek
GoodCoos County, Oregon · 04122 West JCT RD 22 & 4F · Structure no. 6C118 004C00412
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 374
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
County RD 4C over Lampa Creek is a prestressed concrete slab carrying County RD 4C over Lampa Creek in Coos County, Oregon. It was built in 1978, so it is 47 years old, younger than the Oregon average of 49.9 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 374 vehicles a day, roughly 10% of them trucks, projected to reach 424 by 2025. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 19.3 mi (31 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County RD 4C over Lampa Creek built?
It was built in 1978, making it 47 years old in 2025.
What condition is County RD 4C over Lampa 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 County RD 4C over Lampa Creek carry?
About 374 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is County RD 4C over Lampa Creek?
The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.
Who owns County RD 4C over Lampa Creek?
It is owned by the County Highway Agency.