Lacomb Road over One Horse Slough
FairLinn County, Oregon · 015 MI East of Brewster · Structure no. 11987 020L00150
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 61 ft
- 2 main spans
- Daily traffic
- 3,399
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Lacomb Road over One Horse Slough is a prestressed concrete slab carrying Lacomb Road over One Horse Slough in Linn County, Oregon. It was built in 1969, so it is 56 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 3,399 vehicles a day, roughly 10% of them trucks, projected to reach 4,764 by 2041. The structure is 61 ft (18.6 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| 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 Lacomb Road over One Horse Slough built?
It was built in 1969, making it 56 years old in 2025.
What condition is Lacomb Road over One Horse 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 June 2023.
How much traffic does Lacomb Road over One Horse Slough carry?
About 3,399 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Lacomb Road over One Horse Slough?
The structure is 61 ft (18.6 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.
Who owns Lacomb Road over One Horse Slough?
It is owned by the County Highway Agency.