Smith Loop over Slough
FairPosted for loadBenton County, Oregon · 0071 MI E of HWY 99-W · Structure no. 14411 000 00070
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 56 ft
- 2 main spans
- Daily traffic
- 224
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Smith Loop over Slough is a wood or timber stringer/multi-beam or girder carrying Smith Loop over Slough in Benton County, Oregon. It was built in 1963, so it is 62 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. Its operating status is: posted for load restriction.
It carries about 224 vehicles a day, roughly 15% of them trucks, projected to reach 328 by 2040. The structure is 56 ft (17.1 m) long and 25 ft wide. If it were closed, the detour would be 2.5 mi (4 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Smith Loop over Slough built?
It was built in 1963, making it 62 years old in 2025.
What condition is Smith Loop over Slough 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 Smith Loop over Slough carry?
About 224 vehicles per day (2020 count), of which roughly 15% are trucks.
How long is Smith Loop over Slough?
The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 25 ft wide.
Who owns Smith Loop over Slough?
It is owned by the County Highway Agency.