Lenahan Road over Interstate 5
GoodColusa County, California · 03-COL-005-R30.85 · Structure no. 15 0057
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 172 ft
- 2 main spans
- Daily traffic
- 200
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
Lenahan Road over Interstate 5 is a concrete continuous box beam or girders - multiple carrying Lenahan Road over Interstate 5 in Colusa County, California. It was built in 1970, 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 200 vehicles a day, roughly 20% of them trucks, projected to reach 306 by 2042. The structure is 172 ft (52.5 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 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 Lenahan Road over Interstate 5 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Lenahan Road over Interstate 5 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 April 2024.
How much traffic does Lenahan Road over Interstate 5 carry?
About 200 vehicles per day (2012 count), of which roughly 20% are trucks.
How long is Lenahan Road over Interstate 5?
The structure is 172 ft (52.5 m) long with a longest span of 85 ft (25.9 m) and a deck 34 ft wide.
Who owns Lenahan Road over Interstate 5?
It is owned by the State Highway Agency.