Rd. No. 20 over N Fork Sauk River
GoodSnohomish County, Washington · M.P. 37.2 Rd. # 20 · Structure no. 060502000001469
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Concrete Continuous
- Length
- 200 ft
- 3 main spans
- Daily traffic
- 140
- 1992 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Rd. No. 20 over N Fork Sauk River is a concrete continuous stringer/multi-beam or girder carrying Rd. No. 20 over N Fork Sauk River in Snohomish County, Washington. It was built in 1961, so it is 64 years old, older 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 140 vehicles a day, roughly 10% of them trucks, projected to reach 210 by 2045. The structure is 200 ft (61 m) long and 18 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Rd. No. 20 over N Fork Sauk River built?
It was built in 1961, making it 64 years old in 2025.
What condition is Rd. No. 20 over N Fork Sauk River 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 2024.
How much traffic does Rd. No. 20 over N Fork Sauk River carry?
About 140 vehicles per day (1992 count), of which roughly 10% are trucks.
How long is Rd. No. 20 over N Fork Sauk River?
The structure is 200 ft (61 m) long with a longest span of 80 ft (24.4 m) and a deck 18 ft wide.
Who owns Rd. No. 20 over N Fork Sauk River?
It is owned by the U.S. Forest Service.