Cypress Road over Marsh Creek
PoorContra Costa County, California · 0.05 MI East of SR 4 · Structure no. 28C0129
- Built
- 1964
- 61 years old, rebuilt 2006
- Condition
- Poor
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 9,415
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Cypress Road over Marsh Creek is a prestressed concrete stringer/multi-beam or girder carrying Cypress Road over Marsh Creek in Contra Costa County, California. It was built in 1964 and reconstructed in 2006, 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 9,415 vehicles a day, roughly 20% of them trucks, projected to reach 16,853 by 2047. The structure is 78 ft (23.8 m) long and 88 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 | 7 Good | Some minor problems. |
| 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 Cypress Road over Marsh Creek built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2006.
What condition is Cypress Road over Marsh 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 Cypress Road over Marsh Creek carry?
About 9,415 vehicles per day (2020 count), of which roughly 20% are trucks.
How long is Cypress Road over Marsh Creek?
The structure is 78 ft (23.8 m) long with a longest span of 76 ft (23.1 m) and a deck 88 ft wide.
Who owns Cypress Road over Marsh Creek?
It is owned by the City or Municipal Highway Agency.