SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp
FairSan Mateo County, California · 04-SM-380-6.44 · Structure no. 35 0287K
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 5,067 ft
- 38 main spans
- Daily traffic
- 50,000
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp is a prestressed concrete continuous box beam or girders - multiple carrying SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp in San Mateo County, California. It was built in 1987, so it is 38 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 6 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 50,000 vehicles a day, roughly 2% of them trucks, projected to reach 82,051 by 2042. The structure is 5,067 ft (1,544.4 m) long and 42 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp built?
It was built in 1987, making it 38 years old in 2025.
What condition is SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp 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 SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp carry?
About 50,000 vehicles per day (1998 count), of which roughly 2% are trucks.
How long is SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp?
The structure is 5,067 ft (1,544.4 m) long with a longest span of 130 ft (39.6 m) and a deck 42 ft wide.
Who owns SFO-W380 Conn Rmp over N101-SAN Bruno Off-Ramp?
It is owned by the State Highway Agency.