State Route 18 over Deep Creek
GoodSan Bernardino County, California · 08-SBD-018-34.61 · Structure no. 54 0309
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected December 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 49 ft
- 1 main span
- Daily traffic
- 7,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 18 over Deep Creek is a prestressed concrete slab carrying State Route 18 over Deep Creek in San Bernardino County, California. It was built in 1992, so it is 33 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 7,000 vehicles a day, roughly 11% of them trucks, projected to reach 9,000 by 2042. The structure is 49 ft (14.9 m) long and 44 ft wide. If it were closed, the detour would be 47.2 mi (76 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 18 over Deep Creek built?
It was built in 1992, making it 33 years old in 2025.
What condition is State Route 18 over Deep Creek 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 December 2024.
How much traffic does State Route 18 over Deep Creek carry?
About 7,000 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is State Route 18 over Deep Creek?
The structure is 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 44 ft wide.
Who owns State Route 18 over Deep Creek?
It is owned by the State Highway Agency.