IRR County RD 306 over Dry Gulch
GoodGlenn County, California · 25.76 MI N Colusa CO Lin · Structure no. 11C0093
- Built
- 1930
- 95 years old, rebuilt 1961
- Condition
- Good
- inspected August 2023
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 142
- 2001 count
- Owner
- County
- County Highway Agency
About this bridge
IRR County RD 306 over Dry Gulch is a concrete girder and floorbeam system carrying IRR County RD 306 over Dry Gulch in Glenn County, California. It was built in 1930 and reconstructed in 1961, so it is 95 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 142 vehicles a day, roughly 10% of them trucks, projected to reach 355 by 2043. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 34.2 mi (55 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR County RD 306 over Dry Gulch built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1961.
What condition is IRR County RD 306 over Dry Gulch 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 August 2023.
How much traffic does IRR County RD 306 over Dry Gulch carry?
About 142 vehicles per day (2001 count), of which roughly 10% are trucks.
How long is IRR County RD 306 over Dry Gulch?
The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.5 m) and a deck 32 ft wide.
Who owns IRR County RD 306 over Dry Gulch?
It is owned by the County Highway Agency.