State Route 9 over San Lorenzo River
FairSanta Cruz County, California · 05-SCR-009-13.61 · Structure no. 36 0052
- Built
- 1937
- 88 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 107 ft
- 3 main spans
- Daily traffic
- 12,100
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 9 over San Lorenzo River is a steel stringer/multi-beam or girder carrying State Route 9 over San Lorenzo River in Santa Cruz County, California. It was built in 1937, so it is 88 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 12,100 vehicles a day, roughly 4% of them trucks, projected to reach 8,802 by 2042. The structure is 107 ft (32.6 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 9 over San Lorenzo River built?
It was built in 1937, making it 88 years old in 2025.
What condition is State Route 9 over San Lorenzo River 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 June 2024.
How much traffic does State Route 9 over San Lorenzo River carry?
About 12,100 vehicles per day (2017 count), of which roughly 4% are trucks.
How long is State Route 9 over San Lorenzo River?
The structure is 107 ft (32.6 m) long with a longest span of 35 ft (10.7 m) and a deck 31 ft wide.
Who owns State Route 9 over San Lorenzo River?
It is owned by the State Highway Agency.