Greenbrook DR over Cow Creek
FairContra Costa County, California · 0.6 MI E Camino Ramon · Structure no. 28C0392
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 41 ft
- 3 main spans
- Daily traffic
- 7,643
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Greenbrook DR over Cow Creek is a concrete continuous slab carrying Greenbrook DR over Cow Creek in Contra Costa County, California. It was built in 1971, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,643 vehicles a day, roughly 1% of them trucks, projected to reach 4,377 by 2041. The structure is 41 ft (12.5 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Greenbrook DR over Cow Creek built?
It was built in 1971, making it 54 years old in 2025.
What condition is Greenbrook DR over Cow Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.
How much traffic does Greenbrook DR over Cow Creek carry?
About 7,643 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Greenbrook DR over Cow Creek?
The structure is 41 ft (12.5 m) long with a longest span of 27 ft (8.2 m) and a deck 51 ft wide.
Who owns Greenbrook DR over Cow Creek?
It is owned by the City or Municipal Highway Agency.