State Route 4 over Deer Creek
GoodContra Costa County, California · 04-CC-004-R35.47-BTWD · Structure no. 28 0412R
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 163 ft
- 1 main span
- Daily traffic
- 45,500
- 2016 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 4 over Deer Creek is a prestressed concrete stringer/multi-beam or girder carrying State Route 4 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 45,500 vehicles a day, roughly 10% of them trucks, projected to reach 60,000 by 2042. The structure is 163 ft (49.6 m) long and 71 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| 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 State Route 4 over Deer Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is State Route 4 over Deer Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.
How much traffic does State Route 4 over Deer Creek carry?
About 45,500 vehicles per day (2016 count), of which roughly 10% are trucks.
How long is State Route 4 over Deer Creek?
The structure is 163 ft (49.6 m) long with a longest span of 154 ft (47 m) and a deck 71 ft wide.
Who owns State Route 4 over Deer Creek?
It is owned by the State Highway Agency.