State Route 20 over Squirrel Creek
GoodNevada County, California · 03-NEV-020-R5.32 · Structure no. 17 0003
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected July 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 138 ft
- 3 main spans
- Daily traffic
- 13,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 20 over Squirrel Creek is a concrete continuous tee beam carrying State Route 20 over Squirrel Creek in Nevada County, California. It was built in 1975, so it is 50 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 13,000 vehicles a day, projected to reach 21,856 by 2042. The structure is 138 ft (42.1 m) long and 44 ft wide. If it were closed, the detour would be 18 mi (29 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 20 over Squirrel Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is State Route 20 over Squirrel Creek 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 20 over Squirrel Creek carry?
About 13,000 vehicles per day (2020 count).
How long is State Route 20 over Squirrel Creek?
The structure is 138 ft (42.1 m) long with a longest span of 55 ft (16.8 m) and a deck 44 ft wide.
Who owns State Route 20 over Squirrel Creek?
It is owned by the State Highway Agency.