Interstate 5 NB over State Route 99
GoodKern County, California · 06-KER-005-R15.82R · Structure no. 50 0240R
- Built
- 1967
- 58 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 363 ft
- 2 main spans
- Daily traffic
- 34,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 NB over State Route 99 is a steel continuous stringer/multi-beam or girder carrying Interstate 5 NB over State Route 99 in Kern 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 34,500 vehicles a day, roughly 24% of them trucks, projected to reach 33,862 by 2043. The structure is 363 ft (110.6 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 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 State Route 99 built?
It was built in 1967, making it 58 years old in 2025.
What condition is Interstate 5 NB over State Route 99 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 May 2023.
How much traffic does Interstate 5 NB over State Route 99 carry?
About 34,500 vehicles per day (2009 count), of which roughly 24% are trucks.
How long is Interstate 5 NB over State Route 99?
The structure is 363 ft (110.6 m) long with a longest span of 176 ft (53.6 m) and a deck 42 ft wide.
Who owns Interstate 5 NB over State Route 99?
It is owned by the State Highway Agency.