Nat Trails HWY over Sombra Ditch
PoorSan Bernardino County, California · 4.1 MI E of Amboy RD · Structure no. 54C0281
- Built
- 1930
- 95 years old, rebuilt 1953
- Condition
- Poor
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 79 ft
- 8 main spans
- Daily traffic
- 806
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nat Trails HWY over Sombra Ditch is a wood or timber stringer/multi-beam or girder carrying Nat Trails HWY over Sombra Ditch in San Bernardino County, California. It was built in 1930 and reconstructed in 1953, 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 806 vehicles a day, roughly 15% of them trucks, projected to reach 962 by 2041. The structure is 79 ft (24.2 m) long and 28 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 | 7 Good | Some minor problems. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nat Trails HWY over Sombra Ditch built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1953.
What condition is Nat Trails HWY over Sombra 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 February 2024.
How much traffic does Nat Trails HWY over Sombra Ditch carry?
About 806 vehicles per day (2020 count), of which roughly 15% are trucks.
How long is Nat Trails HWY over Sombra Ditch?
The structure is 79 ft (24.2 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.
Who owns Nat Trails HWY over Sombra Ditch?
It is owned by the County Highway Agency.