State Route 92 over Foster City Lagoon
FairSan Mateo County, California · 04-SM-092-R13.83-FSTC · Structure no. 35 0189
- Built
- 1967
- 58 years old, rebuilt 1996
- Condition
- Fair
- inspected August 2022
- Type
- Slab
- Concrete Continuous
- Length
- 521 ft
- 18 main spans
- Daily traffic
- 86,000
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 92 over Foster City Lagoon is a concrete continuous slab carrying State Route 92 over Foster City Lagoon in San Mateo County, California. It was built in 1967 and reconstructed in 1996, 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 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 86,000 vehicles a day, roughly 7% of them trucks, projected to reach 141,595 by 2040. The structure is 521 ft (158.8 m) long and 141 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 92 over Foster City Lagoon built?
It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1996.
What condition is State Route 92 over Foster City Lagoon 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 August 2022.
How much traffic does State Route 92 over Foster City Lagoon carry?
About 86,000 vehicles per day (2009 count), of which roughly 7% are trucks.
How long is State Route 92 over Foster City Lagoon?
The structure is 521 ft (158.8 m) long with a longest span of 52 ft (15.8 m) and a deck 141 ft wide.
Who owns State Route 92 over Foster City Lagoon?
It is owned by the State Highway Agency.