Tunbridge RD over Sycamore Creek
FairContra Costa County, California · At Sycamore Valley RD · Structure no. 28C0440
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected March 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 26 ft
- 2 main spans
- Daily traffic
- 400
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Tunbridge RD over Sycamore Creek is a concrete continuous culvert carrying Tunbridge RD over Sycamore Creek in Contra Costa County, California. It was built in 1970, so it is 55 years old, older 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 6 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 400 vehicles a day, roughly 1% of them trucks, projected to reach 869 by 2041. The structure is 26 ft (8 m) long and 67 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tunbridge RD over Sycamore Creek built?
It was built in 1970, making it 55 years old in 2025.
What condition is Tunbridge RD over Sycamore 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 Tunbridge RD over Sycamore Creek carry?
About 400 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Tunbridge RD over Sycamore Creek?
The structure is 26 ft (8 m) long with a longest span of 13 ft (3.9 m) and a deck 67 ft wide.
Who owns Tunbridge RD over Sycamore Creek?
It is owned by the City or Municipal Highway Agency.