State Route 18 over Hillside
GoodSan Bernardino County, California · 08-SBD-018-R11.90 · Structure no. 54 0754
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 184 ft
- 2 main spans
- Daily traffic
- 16,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 18 over Hillside is a steel stringer/multi-beam or girder carrying State Route 18 over Hillside in San Bernardino County, California. It was built in 1966, so it is 59 years old, older 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 16,000 vehicles a day, roughly 10% of them trucks, projected to reach 20,000 by 2042. The structure is 184 ft (56.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 18 over Hillside built?
It was built in 1966, making it 59 years old in 2025.
What condition is State Route 18 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 October 2024.
How much traffic does State Route 18 over Hillside carry?
About 16,000 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is State Route 18 over Hillside?
The structure is 184 ft (56.2 m) long with a longest span of 94 ft (28.8 m) and a deck 30 ft wide.
Who owns State Route 18 over Hillside?
It is owned by the State Highway Agency.