Interstate 980 over 27th Northgate Sycamore
GoodAlameda County, California · 04-ALA-980-1.40-OAK · Structure no. 33 0421L
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 659 ft
- 9 main spans
- Daily traffic
- 57,500
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 980 over 27th Northgate Sycamore is a concrete continuous box beam or girders - multiple carrying Interstate 980 over 27th Northgate Sycamore in Alameda County, California. It was built in 1969, so it is 56 years old, older 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 57,500 vehicles a day, roughly 3% of them trucks, projected to reach 60,544 by 2044. The structure is 659 ft (200.9 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 980 over 27th Northgate Sycamore built?
It was built in 1969, making it 56 years old in 2025.
What condition is Interstate 980 over 27th Northgate Sycamore 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 May 2024.
How much traffic does Interstate 980 over 27th Northgate Sycamore carry?
About 57,500 vehicles per day (2012 count), of which roughly 3% are trucks.
How long is Interstate 980 over 27th Northgate Sycamore?
The structure is 659 ft (200.9 m) long with a longest span of 115 ft (35.1 m) and a deck 81 ft wide.
Who owns Interstate 980 over 27th Northgate Sycamore?
It is owned by the State Highway Agency.