Interstate 680 NB over State Route 237 (future)
PoorAlameda County, California · 04-ALA-680-M0.04-FMT · Structure no. 33 0423R
- Built
- 1971
- 54 years old, rebuilt 1997
- Condition
- Poor
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 268 ft
- 3 main spans
- Daily traffic
- 61,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 NB over State Route 237 (future) is a concrete continuous box beam or girders - multiple carrying Interstate 680 NB over State Route 237 (future) in Alameda County, California. It was built in 1971 and reconstructed in 1997, so it is 54 years old, younger 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 61,000 vehicles a day, projected to reach 110,187 by 2042. The structure is 268 ft (81.7 m) long and 72 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 NB over State Route 237 (future) built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1997.
What condition is Interstate 680 NB over State Route 237 (future) 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 March 2024.
How much traffic does Interstate 680 NB over State Route 237 (future) carry?
About 61,000 vehicles per day (2018 count).
How long is Interstate 680 NB over State Route 237 (future)?
The structure is 268 ft (81.7 m) long with a longest span of 115 ft (35.1 m) and a deck 72 ft wide.
Who owns Interstate 680 NB over State Route 237 (future)?
It is owned by the State Highway Agency.