State Route 20 over Tehama-Colusa Canal
GoodColusa County, California · 03-COL-020-13.93 · Structure no. 15 0081
- Built
- 1977
- 48 years old
- Condition
- Good
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 71 ft
- 1 main span
- Daily traffic
- 5,800
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over Tehama-Colusa Canal is a concrete box beam or girders - multiple carrying State Route 20 over Tehama-Colusa Canal in Colusa County, California. It was built in 1977, so it is 48 years old, younger 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 5,800 vehicles a day, roughly 16% of them trucks, projected to reach 6,960 by 2042. The structure is 71 ft (21.6 m) long and 43 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 20 over Tehama-Colusa Canal built?
It was built in 1977, making it 48 years old in 2025.
What condition is State Route 20 over Tehama-Colusa Canal 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 January 2024.
How much traffic does State Route 20 over Tehama-Colusa Canal carry?
About 5,800 vehicles per day (2015 count), of which roughly 16% are trucks.
How long is State Route 20 over Tehama-Colusa Canal?
The structure is 71 ft (21.6 m) long with a longest span of 69 ft (20.9 m) and a deck 43 ft wide.
Who owns State Route 20 over Tehama-Colusa Canal?
It is owned by the State Highway Agency.