Interstate 380 over Caltrain UP RR BART Etc
FairSan Mateo County, California · 04-SM-380-5.73-SBR · Structure no. 35 0253
- Built
- 1971
- 54 years old, rebuilt 1973
- Condition
- Fair
- inspected February 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 1,031 ft
- 1 main span
- Daily traffic
- 150,000
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 380 over Caltrain UP RR BART Etc is a prestressed concrete tee beam carrying Interstate 380 over Caltrain UP RR BART Etc in San Mateo County, California. It was built in 1971 and reconstructed in 1973, so it is 54 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 150,000 vehicles a day, roughly 5% of them trucks, projected to reach 255,844 by 2042. The structure is 1,031 ft (314.3 m) long and 207 ft wide. If it were closed, the detour would be 3.1 mi (5 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 380 over Caltrain UP RR BART Etc built?
It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1973.
What condition is Interstate 380 over Caltrain UP RR BART Etc 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 February 2024.
How much traffic does Interstate 380 over Caltrain UP RR BART Etc carry?
About 150,000 vehicles per day (1998 count), of which roughly 5% are trucks.
How long is Interstate 380 over Caltrain UP RR BART Etc?
The structure is 1,031 ft (314.3 m) long with a longest span of 140 ft (42.7 m) and a deck 207 ft wide.
Who owns Interstate 380 over Caltrain UP RR BART Etc?
It is owned by the State Highway Agency.