18th ST over Interstate 980
FairAlameda County, California · 04-ALA-980-0.90-OAK · Structure no. 33 0460
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 238 ft
- 2 main spans
- Daily traffic
- 5,000
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
18th ST over Interstate 980 is a prestressed concrete continuous box beam or girders - multiple carrying 18th ST over Interstate 980 in Alameda County, California. It was built in 1973, so it is 52 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 5,000 vehicles a day, roughly 2% of them trucks, projected to reach 10,688 by 2044. The structure is 238 ft (72.5 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 18th ST over Interstate 980 built?
It was built in 1973, making it 52 years old in 2025.
What condition is 18th ST over Interstate 980 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 May 2024.
How much traffic does 18th ST over Interstate 980 carry?
About 5,000 vehicles per day (2012 count), of which roughly 2% are trucks.
How long is 18th ST over Interstate 980?
The structure is 238 ft (72.5 m) long with a longest span of 119 ft (36.3 m) and a deck 70 ft wide.
Who owns 18th ST over Interstate 980?
It is owned by the State Highway Agency.