Interstate 680 over Grayson Creek
PoorContra Costa County, California · 04-CC-680-20.89 · Structure no. 28 0180
- Built
- 1962
- 63 years old, rebuilt 2005
- Condition
- Poor
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 327 ft
- 8 main spans
- Daily traffic
- 169,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 680 over Grayson Creek is a concrete continuous tee beam carrying Interstate 680 over Grayson Creek in Contra Costa County, California. It was built in 1962 and reconstructed in 2005, so it is 63 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 169,000 vehicles a day, roughly 3% of them trucks, projected to reach 194,099 by 2045. The structure is 327 ft (99.6 m) long and 170 ft wide. If it were closed, the detour would be 5 mi (8 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 680 over Grayson Creek built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2005.
What condition is Interstate 680 over Grayson Creek 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 January 2025.
How much traffic does Interstate 680 over Grayson Creek carry?
About 169,000 vehicles per day (2018 count), of which roughly 3% are trucks.
How long is Interstate 680 over Grayson Creek?
The structure is 327 ft (99.6 m) long with a longest span of 42 ft (12.8 m) and a deck 170 ft wide.
Who owns Interstate 680 over Grayson Creek?
It is owned by the State Highway Agency.