Onramp to SR 4 EB over Deer Creek
FairContra Costa County, California · 04-CC-004-R35.51-BTWD · Structure no. 28 0412S
- Built
- 2018
- 7 years old
- Condition
- Fair
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete
- Length
- 102 ft
- 1 main span
- Daily traffic
- 12,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Onramp to SR 4 EB over Deer Creek is a concrete box beam or girders - multiple carrying Onramp to SR 4 EB over Deer Creek in Contra Costa County, California. It was built in 2018, so it is 7 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 12,000 vehicles a day, roughly 10% of them trucks, projected to reach 15,000 by 2042. The structure is 102 ft (31.1 m) long and 48 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 7 Good | Some minor problems. |
| 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 Onramp to SR 4 EB over Deer Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is Onramp to SR 4 EB over Deer 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 June 2023.
How much traffic does Onramp to SR 4 EB over Deer Creek carry?
About 12,000 vehicles per day (2018 count), of which roughly 10% are trucks.
How long is Onramp to SR 4 EB over Deer Creek?
The structure is 102 ft (31.1 m) long with a longest span of 97 ft (29.7 m) and a deck 48 ft wide.
Who owns Onramp to SR 4 EB over Deer Creek?
It is owned by the State Highway Agency.