Bailey Road over Mount Diablo Creek
FairContra Costa County, California · 0.2 MI NE Concord Blvd · Structure no. 28C0110
- Built
- 2003
- 22 years old
- Condition
- Fair
- inspected November 2023
- Type
- Slab
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 5,858
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Bailey Road over Mount Diablo Creek is a concrete slab carrying Bailey Road over Mount Diablo Creek in Contra Costa County, California. It was built in 2003, so it is 22 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 5,858 vehicles a day, roughly 5% of them trucks, projected to reach 13,620 by 2040. The structure is 43 ft (13.1 m) long and 39 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Bailey Road over Mount Diablo Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is Bailey Road 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 Bailey Road over Mount Diablo Creek carry?
About 5,858 vehicles per day (2013 count), of which roughly 5% are trucks.
How long is Bailey Road over Mount Diablo Creek?
The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.7 m) and a deck 39 ft wide.
Who owns Bailey Road over Mount Diablo Creek?
It is owned by the County Highway Agency.