Interstate 15 NB over South Forest Road
GoodSan Bernardino County, California · 08-SBD-015-R23.47R · Structure no. 54 0940R
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected May 2024
- Type
- Arch - Deck
- Steel
- Length
- 20 ft
- 1 main span
- Daily traffic
- 81,000
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Interstate 15 NB over South Forest Road is a steel arch - deck carrying Interstate 15 NB over South Forest Road in San Bernardino County, California. It was built in 1969, so it is 56 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 81,000 vehicles a day, roughly 14% of them trucks, projected to reach 90,000 by 2045. The structure is 20 ft (6.1 m) long and 106 ft wide. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Interstate 15 NB over South Forest Road built?
It was built in 1969, making it 56 years old in 2025.
What condition is Interstate 15 NB over South Forest Road 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 May 2024.
How much traffic does Interstate 15 NB over South Forest Road carry?
About 81,000 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is Interstate 15 NB over South Forest Road?
The structure is 20 ft (6.1 m) long with a longest span of 18 ft (5.6 m) and a deck 106 ft wide.
Who owns Interstate 15 NB over South Forest Road?
It is owned by the State Highway Agency.