State Route 128 over Interstate 505
FairYolo County, California · 03-YOL-128-9.81 · Structure no. 22 0110
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected May 2021
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 277 ft
- 4 main spans
- Daily traffic
- 12,000
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 128 over Interstate 505 is a concrete continuous box beam or girders - multiple carrying State Route 128 over Interstate 505 in Yolo County, California. It was built in 1959, so it is 66 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 12,000 vehicles a day, roughly 5% of them trucks, projected to reach 15,188 by 2041. The structure is 277 ft (84.3 m) long and 37 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 128 over Interstate 505 built?
It was built in 1959, making it 66 years old in 2025.
What condition is State Route 128 over Interstate 505 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 May 2021.
How much traffic does State Route 128 over Interstate 505 carry?
About 12,000 vehicles per day (2010 count), of which roughly 5% are trucks.
How long is State Route 128 over Interstate 505?
The structure is 277 ft (84.3 m) long with a longest span of 95 ft (29.1 m) and a deck 37 ft wide.
Who owns State Route 128 over Interstate 505?
It is owned by the State Highway Agency.