State Route 1 SB over San Lorenzo River
FairSanta Cruz County, California · 05-SCR-001-17.41-SCR · Structure no. 36 0071L
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected July 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 231 ft
- 4 main spans
- Daily traffic
- 30,000
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 SB over San Lorenzo River is a concrete continuous tee beam carrying State Route 1 SB over San Lorenzo River in Santa Cruz County, California. It was built in 1956, so it is 69 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 30,000 vehicles a day, roughly 4% of them trucks, projected to reach 50,508 by 2045. The structure is 231 ft (70.4 m) long and 33 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 SB over San Lorenzo River built?
It was built in 1956, making it 69 years old in 2025.
What condition is State Route 1 SB 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 July 2023.
How much traffic does State Route 1 SB over San Lorenzo River carry?
About 30,000 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is State Route 1 SB over San Lorenzo River?
The structure is 231 ft (70.4 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.
Who owns State Route 1 SB over San Lorenzo River?
It is owned by the State Highway Agency.