Fort Irwin Road over Interstate 15
GoodSan Bernardino County, California · 08-SBD-015-79.59 · Structure no. 54 0559
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 229 ft
- 2 main spans
- Daily traffic
- 4,600
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Fort Irwin Road over Interstate 15 is a prestressed concrete stringer/multi-beam or girder carrying Fort Irwin Road over Interstate 15 in San Bernardino County, California. It was built in 1961, so it is 64 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 4,600 vehicles a day, roughly 5% of them trucks, projected to reach 5,000 by 2044. The structure is 229 ft (69.8 m) long and 34 ft wide.
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 Fort Irwin Road over Interstate 15 built?
It was built in 1961, making it 64 years old in 2025.
What condition is Fort Irwin Road over Interstate 15 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 June 2024.
How much traffic does Fort Irwin Road over Interstate 15 carry?
About 4,600 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Fort Irwin Road over Interstate 15?
The structure is 229 ft (69.8 m) long with a longest span of 77 ft (23.5 m) and a deck 34 ft wide.
Who owns Fort Irwin Road over Interstate 15?
It is owned by the State Highway Agency.