Or 99E (hwy 58) over Slough
FairLane County, Oregon · 030 MI S Linn Lane CO LN · Structure no. 03943A058 03204
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected December 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 56 ft
- 2 main spans
- Daily traffic
- 12,088
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Or 99E (hwy 58) over Slough is a prestressed concrete slab carrying Or 99E (hwy 58) over Slough in Lane 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 12,088 vehicles a day, roughly 19% of them trucks, projected to reach 12,200 by 2042. The structure is 56 ft (17.1 m) long and 44 ft wide. If it were closed, the detour would be 31.7 mi (51 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Or 99E (hwy 58) over Slough built?
It was built in 1969, making it 56 years old in 2025.
What condition is Or 99E (hwy 58) 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 December 2023.
How much traffic does Or 99E (hwy 58) over Slough carry?
About 12,088 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is Or 99E (hwy 58) over Slough?
The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 44 ft wide.
Who owns Or 99E (hwy 58) over Slough?
It is owned by the State Highway Agency.