Interstate 5 SB over State Route 4
FairSan Joaquin County, California · 10-SJ-005-26.12-STKN · Structure no. 29 0232L
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 738 ft
- 6 main spans
- Daily traffic
- 87,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 SB over State Route 4 is a concrete continuous box beam or girders - multiple carrying Interstate 5 SB over State Route 4 in San Joaquin County, California. It was built in 1972, so it is 53 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 87,500 vehicles a day, roughly 16% of them trucks, projected to reach 166,220 by 2041. The structure is 738 ft (224.9 m) long and 68 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 SB over State Route 4 built?
It was built in 1972, making it 53 years old in 2025.
What condition is Interstate 5 SB over State Route 4 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 August 2023.
How much traffic does Interstate 5 SB over State Route 4 carry?
About 87,500 vehicles per day (2009 count), of which roughly 16% are trucks.
How long is Interstate 5 SB over State Route 4?
The structure is 738 ft (224.9 m) long with a longest span of 155 ft (47.2 m) and a deck 68 ft wide.
Who owns Interstate 5 SB over State Route 4?
It is owned by the State Highway Agency.