Sycamore Slough RD over Sycamore Slough
PoorColusa County, California · 4.3 MI NE Sachreiter RD · Structure no. 15C0114
- Built
- 1915
- 110 years old
- Condition
- Poor
- inspected October 2023
- Type
- Tee Beam
- Concrete
- Length
- 22 ft
- 1 main span
- Daily traffic
- 60
- 2014 count
- Owner
- County
- County Highway Agency
About this bridge
Sycamore Slough RD over Sycamore Slough is a concrete tee beam carrying Sycamore Slough RD over Sycamore Slough in Colusa County, California. It was built in 1915, so it is 110 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 60 vehicles a day, roughly 10% of them trucks, projected to reach 187 by 2042. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sycamore Slough RD over Sycamore Slough built?
It was built in 1915, making it 110 years old in 2025.
What condition is Sycamore Slough RD over Sycamore Slough 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 October 2023.
How much traffic does Sycamore Slough RD over Sycamore Slough carry?
About 60 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is Sycamore Slough RD over Sycamore Slough?
The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.
Who owns Sycamore Slough RD over Sycamore Slough?
It is owned by the County Highway Agency.