Interstate 280 over San Mateo CR Crystal Spr
FairSan Mateo County, California · 04-SM-280-R12.73 · Structure no. 35 0199
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,645 ft
- 5 main spans
- Daily traffic
- 106,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 280 over San Mateo CR Crystal Spr is a steel continuous stringer/multi-beam or girder carrying Interstate 280 over San Mateo CR Crystal Spr in San Mateo County, California. It was built in 1967, so it is 58 years old, older 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 106,000 vehicles a day, roughly 3% of them trucks, projected to reach 339,637 by 2040. The structure is 1,645 ft (501.5 m) long and 142 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 280 over San Mateo CR Crystal Spr built?
It was built in 1967, making it 58 years old in 2025.
What condition is Interstate 280 over San Mateo CR Crystal Spr 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 July 2023.
How much traffic does Interstate 280 over San Mateo CR Crystal Spr carry?
About 106,000 vehicles per day (2009 count), of which roughly 3% are trucks.
How long is Interstate 280 over San Mateo CR Crystal Spr?
The structure is 1,645 ft (501.5 m) long with a longest span of 360 ft (109.8 m) and a deck 142 ft wide.
Who owns Interstate 280 over San Mateo CR Crystal Spr?
It is owned by the State Highway Agency.