I280S Off-Monterey over I 280 San Jose Muni BART
PoorSan Francisco County, California · 04-SF-280-R2.72-SF · Structure no. 34 0079K
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 557 ft
- 5 main spans
- Daily traffic
- 11,200
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
I280S Off-Monterey over I 280 San Jose Muni BART is a concrete continuous box beam or girders - multiple carrying I280S Off-Monterey over I 280 San Jose Muni BART in San Francisco County, California. It was built in 1964, so it is 61 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 11,200 vehicles a day, roughly 2% of them trucks, projected to reach 23,435 by 2044. The structure is 557 ft (169.8 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I280S Off-Monterey over I 280 San Jose Muni BART built?
It was built in 1964, making it 61 years old in 2025.
What condition is I280S Off-Monterey over I 280 San Jose Muni BART 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 April 2024.
How much traffic does I280S Off-Monterey over I 280 San Jose Muni BART carry?
About 11,200 vehicles per day (2019 count), of which roughly 2% are trucks.
How long is I280S Off-Monterey over I 280 San Jose Muni BART?
The structure is 557 ft (169.8 m) long with a longest span of 138 ft (42.1 m) and a deck 34 ft wide.
Who owns I280S Off-Monterey over I 280 San Jose Muni BART?
It is owned by the State Highway Agency.