Smith Loop over Slough
PoorPosted for loadBenton County, Oregon · 0100 MI E of HWY 99-W · Structure no. 14412 000 00100
- Built
- 1956
- 69 years old
- Condition
- Poor
- inspected July 2024
- Type
- Slab
- Wood or Timber
- Length
- 31 ft
- 2 main spans
- Daily traffic
- 182
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Smith Loop over Slough is a wood or timber slab carrying Smith Loop over Slough in Benton County, Oregon. It was built in 1956, so it is 69 years old, older than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 182 vehicles a day, roughly 15% of them trucks, projected to reach 274 by 2040. The structure is 31 ft (9.4 m) long and 26 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Smith Loop over Slough built?
It was built in 1956, making it 69 years old in 2025.
What condition is Smith Loop over Slough in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Smith Loop over Slough carry?
About 182 vehicles per day (2020 count), of which roughly 15% are trucks.
How long is Smith Loop over Slough?
The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.
Who owns Smith Loop over Slough?
It is owned by the County Highway Agency.