IRR County RD 306 over Watson Creek
PoorGlenn County, California · 0.3 MI N of RD #305 · Structure no. 11C0092
- Built
- 1930
- 95 years old, rebuilt 1980
- Condition
- Poor
- inspected August 2023
- Type
- Girder and Floorbeam System
- Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 268
- 2004 count
- Owner
- County
- County Highway Agency
About this bridge
IRR County RD 306 over Watson Creek is a concrete girder and floorbeam system carrying IRR County RD 306 over Watson Creek in Glenn County, California. It was built in 1930 and reconstructed in 1980, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 268 vehicles a day, roughly 15% of them trucks, projected to reach 310 by 2043. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Watson Creek built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1980.
What condition is IRR County RD 306 over Watson Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.
How much traffic does IRR County RD 306 over Watson Creek carry?
About 268 vehicles per day (2004 count), of which roughly 15% are trucks.
How long is IRR County RD 306 over Watson Creek?
The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 34 ft wide.
Who owns IRR County RD 306 over Watson Creek?
It is owned by the County Highway Agency.