Interstate 5 SB over Klamath River Road
GoodSiskiyou County, California · 02-SIS-005-R58.10L · Structure no. 02 0133L
- Built
- 1970
- 55 years old, rebuilt 2018
- Condition
- Good
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 104 ft
- 1 main span
- Daily traffic
- 7,050
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 SB over Klamath River Road is a prestressed concrete box beam or girders - multiple carrying Interstate 5 SB over Klamath River Road in Siskiyou County, California. It was built in 1970 and reconstructed in 2018, so it is 55 years old, older than the California average of 54.8 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 7,050 vehicles a day, roughly 31% of them trucks, projected to reach 10,270 by 2040. The structure is 104 ft (31.7 m) long and 42 ft wide. If it were closed, the detour would be 28 mi (45 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 SB over Klamath River Road built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2018.
What condition is Interstate 5 SB over Klamath River Road 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 September 2023.
How much traffic does Interstate 5 SB over Klamath River Road carry?
About 7,050 vehicles per day (2015 count), of which roughly 31% are trucks.
How long is Interstate 5 SB over Klamath River Road?
The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.9 m) and a deck 42 ft wide.
Who owns Interstate 5 SB over Klamath River Road?
It is owned by the State Highway Agency.