Interstate 5 over Monte Diablo Ave
FairSan Joaquin County, California · 10-SJ-005-27.91-STKN · Structure no. 29 0188R
- Built
- 1970
- 55 years old, rebuilt 2005
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 168 ft
- 1 main span
- Daily traffic
- 56,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 5 over Monte Diablo Ave is a prestressed concrete box beam or girders - multiple carrying Interstate 5 over Monte Diablo Ave in San Joaquin County, California. It was built in 1970 and reconstructed in 2005, so it is 55 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 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 56,500 vehicles a day, roughly 23% of them trucks, projected to reach 113,673 by 2041. The structure is 168 ft (51.2 m) long and 84 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 5 over Monte Diablo Ave built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2005.
What condition is Interstate 5 over Monte Diablo Ave 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 over Monte Diablo Ave carry?
About 56,500 vehicles per day (2009 count), of which roughly 23% are trucks.
How long is Interstate 5 over Monte Diablo Ave?
The structure is 168 ft (51.2 m) long with a longest span of 166 ft (50.6 m) and a deck 84 ft wide.
Who owns Interstate 5 over Monte Diablo Ave?
It is owned by the State Highway Agency.