Interstate 40 over Twin Hills Wash
GoodSan Bernardino County, California · 08-SBD-040-R15.92 · Structure no. 54 0716R
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 60 ft
- 3 main spans
- Daily traffic
- 19,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 40 over Twin Hills Wash is a concrete continuous slab carrying Interstate 40 over Twin Hills Wash in San Bernardino County, California. It was built in 1968, so it is 57 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 19,500 vehicles a day, roughly 40% of them trucks, projected to reach 23,644 by 2044. The structure is 60 ft (18.3 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 40 over Twin Hills Wash built?
It was built in 1968, making it 57 years old in 2025.
What condition is Interstate 40 over Twin Hills Wash 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 November 2024.
How much traffic does Interstate 40 over Twin Hills Wash carry?
About 19,500 vehicles per day (2022 count), of which roughly 40% are trucks.
How long is Interstate 40 over Twin Hills Wash?
The structure is 60 ft (18.3 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.
Who owns Interstate 40 over Twin Hills Wash?
It is owned by the State Highway Agency.