State Route 1 over Hillside
GoodSan Luis Obispo County, California · 05-SLO-001-71.70 · Structure no. 49 0273
- Built
- 2020
- 5 years old
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 54 ft
- 1 main span
- Daily traffic
- 2,750
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over Hillside is a prestressed concrete slab carrying State Route 1 over Hillside in San Luis Obispo County, California. It was built in 2020, so it is 5 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 2,750 vehicles a day, roughly 2% of them trucks, projected to reach 3,500 by 2040. The structure is 54 ft (16.5 m) long and 15 ft wide. If it were closed, the detour would be 72.1 mi (116 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 1 over Hillside built?
It was built in 2020, making it 5 years old in 2025.
What condition is State Route 1 over Hillside in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does State Route 1 over Hillside carry?
About 2,750 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is State Route 1 over Hillside?
The structure is 54 ft (16.5 m) long with a longest span of 51 ft (15.4 m) and a deck 15 ft wide.
Who owns State Route 1 over Hillside?
It is owned by the State Highway Agency.