Interstate 5 SB over Cnfr & Old HWY 99W
FairColusa County, California · 03-COL-005-R16.57 · Structure no. 15 0066L
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 410 ft
- 4 main spans
- Daily traffic
- 14,000
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 SB over Cnfr & Old HWY 99W is a concrete continuous box beam or girders - multiple carrying Interstate 5 SB over Cnfr & Old HWY 99W in Colusa County, California. It was built in 1971, so it is 54 years old, younger 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 14,000 vehicles a day, roughly 29% of them trucks, projected to reach 23,206 by 2044. The structure is 410 ft (124.9 m) long and 41 ft wide. If it were closed, the detour would be 29.8 mi (48 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 SB over Cnfr & Old HWY 99W built?
It was built in 1971, making it 54 years old in 2025.
What condition is Interstate 5 SB over Cnfr & Old HWY 99W 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 January 2024.
How much traffic does Interstate 5 SB over Cnfr & Old HWY 99W carry?
About 14,000 vehicles per day (2017 count), of which roughly 29% are trucks.
How long is Interstate 5 SB over Cnfr & Old HWY 99W?
The structure is 410 ft (124.9 m) long with a longest span of 124 ft (37.8 m) and a deck 41 ft wide.
Who owns Interstate 5 SB over Cnfr & Old HWY 99W?
It is owned by the State Highway Agency.