Knollbrook Pl over Dunawi Creek
FairBenton County, Oregon · N of Knollbrook Ave · Structure no. 20355 000 00010
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 364
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Knollbrook Pl over Dunawi Creek is a prestressed concrete slab carrying Knollbrook Pl over Dunawi Creek in Benton County, Oregon. It was built in 2006, so it is 19 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 364 vehicles a day, roughly 5% of them trucks, projected to reach 530 by 2040. The structure is 42 ft (12.8 m) long and 38 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Knollbrook Pl over Dunawi Creek built?
It was built in 2006, making it 19 years old in 2025.
What condition is Knollbrook Pl over Dunawi Creek 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 July 2024.
How much traffic does Knollbrook Pl over Dunawi Creek carry?
About 364 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Knollbrook Pl over Dunawi Creek?
The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 38 ft wide.
Who owns Knollbrook Pl over Dunawi Creek?
It is owned by the City or Municipal Highway Agency.