Interstate 380 EB over 7th Avenue
GoodSan Mateo County, California · 04-SM-380-6.20-SBR · Structure no. 35 0261R
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 144 ft
- 1 main span
- Daily traffic
- 75,000
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 380 EB over 7th Avenue is a prestressed concrete box beam or girders - multiple carrying Interstate 380 EB over 7th Avenue in San Mateo County, California. It was built in 1976, so it is 49 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 75,000 vehicles a day, roughly 5% of them trucks, projected to reach 127,922 by 2042. The structure is 144 ft (43.9 m) long and 43 ft wide.
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 380 EB over 7th Avenue built?
It was built in 1976, making it 49 years old in 2025.
What condition is Interstate 380 EB over 7th Avenue 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 February 2024.
How much traffic does Interstate 380 EB over 7th Avenue carry?
About 75,000 vehicles per day (1998 count), of which roughly 5% are trucks.
How long is Interstate 380 EB over 7th Avenue?
The structure is 144 ft (43.9 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.
Who owns Interstate 380 EB over 7th Avenue?
It is owned by the State Highway Agency.