Interstate 5 NB over Corp RR & Siskiyou Ave
GoodSiskiyou County, California · 02-SIS-005-R36.74 · Structure no. 02 0030R
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 393 ft
- 5 main spans
- Daily traffic
- 7,850
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 NB over Corp RR & Siskiyou Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying Interstate 5 NB over Corp RR & Siskiyou Ave in Siskiyou County, California. It was built in 1967, so it is 58 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 7,850 vehicles a day, roughly 33% of them trucks, projected to reach 11,399 by 2040. The structure is 393 ft (119.8 m) long and 41 ft wide. If it were closed, the detour would be 6.8 mi (11 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 NB over Corp RR & Siskiyou Ave built?
It was built in 1967, making it 58 years old in 2025.
What condition is Interstate 5 NB over Corp RR & Siskiyou Ave 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 NB over Corp RR & Siskiyou Ave carry?
About 7,850 vehicles per day (2015 count), of which roughly 33% are trucks.
How long is Interstate 5 NB over Corp RR & Siskiyou Ave?
The structure is 393 ft (119.8 m) long with a longest span of 83 ft (25.3 m) and a deck 41 ft wide.
Who owns Interstate 5 NB over Corp RR & Siskiyou Ave?
It is owned by the State Highway Agency.