SR 21 over Roosevelt Lake
GoodFerry County, Washington · 14.9 N JCT SR 174 · Structure no. 0012106B0000000
- Built
- 1982
- 43 years old, rebuilt 2019
- Condition
- Good
- inspected October 2023
- Type
- Other
- Steel
- Length
- 130 ft
- 1 main span
- Daily traffic
- 131
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 21 over Roosevelt Lake is a steel other carrying SR 21 over Roosevelt Lake in Ferry County, Washington. It was built in 1982 and reconstructed in 2019, so it is 43 years old, younger than the Washington average of 49.8 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 131 vehicles a day, roughly 19% of them trucks, projected to reach 250 by 2036. The structure is 130 ft (39.6 m) long and 18 ft wide. If it were closed, the detour would be 65.2 mi (105 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 21 over Roosevelt Lake built?
It was built in 1982, making it 43 years old in 2025. It was reconstructed in 2019.
What condition is SR 21 over Roosevelt Lake 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 October 2023.
How much traffic does SR 21 over Roosevelt Lake carry?
About 131 vehicles per day (2023 count), of which roughly 19% are trucks.
How long is SR 21 over Roosevelt Lake?
The structure is 130 ft (39.6 m) long with a longest span of 75 ft (22.9 m) and a deck 18 ft wide.
Who owns SR 21 over Roosevelt Lake?
It is owned by the State Highway Agency.