Tantau Avenue over Interstate 280
GoodSanta Clara County, California · 04-SCL-280-7.84-CPO · Structure no. 37 0397
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 240 ft
- 2 main spans
- Daily traffic
- 12,700
- 2000 count
- Owner
- State
- State Highway Agency
About this bridge
Tantau Avenue over Interstate 280 is a prestressed concrete continuous box beam or girders - multiple carrying Tantau Avenue over Interstate 280 in Santa Clara County, California. It was built in 1976, so it is 49 years old, younger 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 12,700 vehicles a day, roughly 2% of them trucks, projected to reach 19,944 by 2046. The structure is 240 ft (73.2 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tantau Avenue over Interstate 280 built?
It was built in 1976, making it 49 years old in 2025.
What condition is Tantau Avenue over Interstate 280 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 January 2024.
How much traffic does Tantau Avenue over Interstate 280 carry?
About 12,700 vehicles per day (2000 count), of which roughly 2% are trucks.
How long is Tantau Avenue over Interstate 280?
The structure is 240 ft (73.2 m) long with a longest span of 121 ft (36.9 m) and a deck 68 ft wide.
Who owns Tantau Avenue over Interstate 280?
It is owned by the State Highway Agency.