State Route 49 over Sidehill Viaduct
GoodSierra County, California · 03-SIE-049-3.06 · Structure no. 13 0032
- Built
- 2024
- 1 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 204 ft
- 5 main spans
- Daily traffic
- 850
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 49 over Sidehill Viaduct is a concrete continuous slab carrying State Route 49 over Sidehill Viaduct in Sierra County, California. It was built in 2024, so it is 1 years old, younger 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 850 vehicles a day, roughly 1% of them trucks, projected to reach 1,100 by 2043. The structure is 204 ft (62.3 m) long and 16 ft wide. If it were closed, the detour would be 61.5 mi (99 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 49 over Sidehill Viaduct built?
It was built in 2024, making it 1 years old in 2025.
What condition is State Route 49 over Sidehill Viaduct 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 July 2024.
How much traffic does State Route 49 over Sidehill Viaduct carry?
About 850 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is State Route 49 over Sidehill Viaduct?
The structure is 204 ft (62.3 m) long with a longest span of 40 ft (12.2 m) and a deck 16 ft wide.
Who owns State Route 49 over Sidehill Viaduct?
It is owned by the State Highway Agency.