SW Tonka Road over Nyberg Creek
GoodWashington County, Oregon · 001 E Boones Ferry Road · Structure no. 67TB01000000000
- Built
- 1985
- 40 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 37 ft
- 1 main span
- Daily traffic
- 567
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW Tonka Road over Nyberg Creek is a prestressed concrete slab carrying SW Tonka Road over Nyberg Creek in Washington County, Oregon. It was built in 1985, so it is 40 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 567 vehicles a day, roughly 5% of them trucks, projected to reach 626 by 2025. The structure is 37 ft (11.3 m) long and 52 ft wide.
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 | 8 Very Good | No problems noted. |
| 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 SW Tonka Road over Nyberg Creek built?
It was built in 1985, making it 40 years old in 2025.
What condition is SW Tonka Road over Nyberg 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 July 2024.
How much traffic does SW Tonka Road over Nyberg Creek carry?
About 567 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is SW Tonka Road over Nyberg Creek?
The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 52 ft wide.
Who owns SW Tonka Road over Nyberg Creek?
It is owned by the City or Municipal Highway Agency.