164th ST SW over Swamp Creek
FairSnohomish County, Washington · 1.0 W JCT I-5 · Structure no. 087029000000000
- Built
- 1960
- 65 years old, rebuilt 2003
- Condition
- Fair
- inspected June 2023
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 29,286
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
164th ST SW over Swamp Creek is a concrete culvert carrying 164th ST SW over Swamp Creek in Snohomish County, Washington. It was built in 1960 and reconstructed in 2003, so it is 65 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 29,286 vehicles a day, roughly 8% of them trucks, projected to reach 50,000 by 2041. The structure is 23 ft (6.9 m) long and 82 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 164th ST SW over Swamp Creek built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2003.
What condition is 164th ST SW over Swamp Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does 164th ST SW over Swamp Creek carry?
About 29,286 vehicles per day (2019 count), of which roughly 8% are trucks.
How long is 164th ST SW over Swamp Creek?
The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3.1 m) and a deck 82 ft wide.
Who owns 164th ST SW over Swamp Creek?
It is owned by the County Highway Agency.