Slough Road over Interstate 5
FairSiskiyou County, California · 02-SIS-005-R34.96 · Structure no. 02 0155
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Single or Spread
- Concrete Continuous
- Length
- 222 ft
- 2 main spans
- Daily traffic
- 10
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Slough Road over Interstate 5 is a concrete continuous box beam or girders - single or spread carrying Slough Road over Interstate 5 in Siskiyou County, California. It was built in 1969, so it is 56 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 26 by 2040. The structure is 222 ft (67.7 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Slough Road over Interstate 5 built?
It was built in 1969, making it 56 years old in 2025.
What condition is Slough Road over Interstate 5 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 September 2023.
How much traffic does Slough Road over Interstate 5 carry?
About 10 vehicles per day (2015 count), of which roughly 10% are trucks.
How long is Slough Road over Interstate 5?
The structure is 222 ft (67.7 m) long with a longest span of 111 ft (33.8 m) and a deck 20 ft wide.
Who owns Slough Road over Interstate 5?
It is owned by the State Highway Agency.