Kirker Pass RD over Mount Diablo Creek
FairContra Costa County, California · 0.2 MI N Clayton RD · Structure no. 28C0116
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected November 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 19,000
- 1977 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Kirker Pass RD over Mount Diablo Creek is a concrete continuous culvert carrying Kirker Pass RD over Mount Diablo Creek in Contra Costa County, California. It was built in 1967, so it is 58 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 19,000 vehicles a day, roughly 5% of them trucks, projected to reach 44,890 by 2040. The structure is 25 ft (7.6 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Kirker Pass RD over Mount Diablo Creek built?
It was built in 1967, making it 58 years old in 2025.
What condition is Kirker Pass RD over Mount Diablo 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 November 2023.
How much traffic does Kirker Pass RD over Mount Diablo Creek carry?
About 19,000 vehicles per day (1977 count), of which roughly 5% are trucks.
How long is Kirker Pass RD over Mount Diablo Creek?
The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).
Who owns Kirker Pass RD over Mount Diablo Creek?
It is owned by the City or Municipal Highway Agency.