Interstate 280 SB over State Route 92
GoodSan Mateo County, California · 04-SM-280-10.81 · Structure no. 35 0243L
- Built
- 1973
- 52 years old
- Condition
- Good
- inspected October 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 328 ft
- 2 main spans
- Daily traffic
- 53,500
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 280 SB over State Route 92 is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 280 SB over State Route 92 in San Mateo County, California. It was built in 1973, so it is 52 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 53,500 vehicles a day, roughly 3% of them trucks, projected to reach 80,137 by 2040. The structure is 328 ft (100.1 m) long and 70 ft wide. If it were closed, the detour would be 3.1 mi (5 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 Interstate 280 SB over State Route 92 built?
It was built in 1973, making it 52 years old in 2025.
What condition is Interstate 280 SB over State Route 92 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 October 2023.
How much traffic does Interstate 280 SB over State Route 92 carry?
About 53,500 vehicles per day (1998 count), of which roughly 3% are trucks.
How long is Interstate 280 SB over State Route 92?
The structure is 328 ft (100.1 m) long with a longest span of 180 ft (55 m) and a deck 70 ft wide.
Who owns Interstate 280 SB over State Route 92?
It is owned by the State Highway Agency.