Willow Pass RD over Walnut Creek
FairContra Costa County, California · At I-680 · Structure no. 28C0183
- Built
- 1954
- 71 years old, rebuilt 1976
- Condition
- Fair
- inspected January 2025
- Type
- Tee Beam
- Concrete
- Length
- 316 ft
- 6 main spans
- Daily traffic
- 37,000
- 1977 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Willow Pass RD over Walnut Creek is a concrete tee beam carrying Willow Pass RD over Walnut Creek in Contra Costa County, California. It was built in 1954 and reconstructed in 1976, so it is 71 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 37,000 vehicles a day, roughly 5% of them trucks, projected to reach 87,520 by 2047. The structure is 316 ft (96.3 m) long and 93 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Willow Pass RD over Walnut Creek built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1976.
What condition is Willow Pass RD over Walnut 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 January 2025.
How much traffic does Willow Pass RD over Walnut Creek carry?
About 37,000 vehicles per day (1977 count), of which roughly 5% are trucks.
How long is Willow Pass RD over Walnut Creek?
The structure is 316 ft (96.3 m) long with a longest span of 61 ft (18.6 m) and a deck 93 ft wide.
Who owns Willow Pass RD over Walnut Creek?
It is owned by the City or Municipal Highway Agency.