State Route 45 over Sycamore Slough
FairYolo County, California · 03-YOL-045-0.13 · Structure no. 22 0041
- Built
- 1939
- 86 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 195 ft
- 9 main spans
- Daily traffic
- 860
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 45 over Sycamore Slough is a concrete continuous slab carrying State Route 45 over Sycamore Slough in Yolo County, California. It was built in 1939, so it is 86 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 860 vehicles a day, roughly 17% of them trucks, projected to reach 1,224 by 2046. The structure is 195 ft (59.4 m) long and 33 ft wide. If it were closed, the detour would be 21.1 mi (34 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 45 over Sycamore Slough built?
It was built in 1939, making it 86 years old in 2025.
What condition is State Route 45 over Sycamore Slough in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does State Route 45 over Sycamore Slough carry?
About 860 vehicles per day (2016 count), of which roughly 17% are trucks.
How long is State Route 45 over Sycamore Slough?
The structure is 195 ft (59.4 m) long with a longest span of 26 ft (7.8 m) and a deck 33 ft wide.
Who owns State Route 45 over Sycamore Slough?
It is owned by the State Highway Agency.