Nat Trails HWY over Adelia Ditch
PoorSan Bernardino County, California · 11.1 MI E Kelbaker RD · Structure no. 54C0298
- Built
- 1930
- 95 years old, rebuilt 1950
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 60 ft
- 3 main spans
- Daily traffic
- 502
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Nat Trails HWY over Adelia Ditch is a wood or timber stringer/multi-beam or girder carrying Nat Trails HWY over Adelia Ditch in San Bernardino County, California. It was built in 1930 and reconstructed in 1950, so it is 95 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 502 vehicles a day, roughly 30% of them trucks, projected to reach 585 by 2042. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 39.8 mi (64 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nat Trails HWY over Adelia Ditch built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1950.
What condition is Nat Trails HWY over Adelia Ditch in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.
How much traffic does Nat Trails HWY over Adelia Ditch carry?
About 502 vehicles per day (2018 count), of which roughly 30% are trucks.
How long is Nat Trails HWY over Adelia Ditch?
The structure is 60 ft (18.3 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.
Who owns Nat Trails HWY over Adelia Ditch?
It is owned by the County Highway Agency.