HWY 091 over Lake Slough
GoodBenton County, Oregon · Or 99W MP 103.68 · Structure no. 22385 091 10368
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected April 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 6,255
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
HWY 091 over Lake Slough is a prestressed concrete slab carrying HWY 091 over Lake Slough in Benton County, Oregon. It was built in 2018, so it is 7 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 6,255 vehicles a day, roughly 17% of them trucks, projected to reach 6,400 by 2042. The structure is 78 ft (23.8 m) long and 47 ft wide. If it were closed, the detour would be 2.5 mi (4 km).
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 | 8 Very Good | No problems noted. |
| 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 HWY 091 over Lake Slough built?
It was built in 2018, making it 7 years old in 2025.
What condition is HWY 091 over Lake Slough 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 April 2023.
How much traffic does HWY 091 over Lake Slough carry?
About 6,255 vehicles per day (2022 count), of which roughly 17% are trucks.
How long is HWY 091 over Lake Slough?
The structure is 78 ft (23.8 m) long with a longest span of 78 ft (23.8 m) and a deck 47 ft wide.
Who owns HWY 091 over Lake Slough?
It is owned by the State Highway Agency.