Or 99W (hwy 91) over South Fork Ash Creek
FairPolk County, Oregon · 006 MI S Monmouth · Structure no. 06662 01W 06438
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected April 2023
- Type
- Channel Beam
- Concrete
- Length
- 69 ft
- 3 main spans
- Daily traffic
- 9,987
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Or 99W (hwy 91) over South Fork Ash Creek is a concrete channel beam carrying Or 99W (hwy 91) over South Fork Ash Creek in Polk County, Oregon. It was built in 1957, so it is 68 years old, older 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 9,987 vehicles a day, roughly 3% of them trucks, projected to reach 10,100 by 2042. The structure is 69 ft (21 m) long and 44 ft wide. If it were closed, the detour would be 18 mi (29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Or 99W (hwy 91) over South Fork Ash Creek built?
It was built in 1957, making it 68 years old in 2025.
What condition is Or 99W (hwy 91) over South Fork Ash 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 April 2023.
How much traffic does Or 99W (hwy 91) over South Fork Ash Creek carry?
About 9,987 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is Or 99W (hwy 91) over South Fork Ash Creek?
The structure is 69 ft (21 m) long with a longest span of 23 ft (7 m) and a deck 44 ft wide.
Who owns Or 99W (hwy 91) over South Fork Ash Creek?
It is owned by the State Highway Agency.