NE 175th ST over Swamp Creek
PoorKing County, Washington · 0.1 MI S of SR-522 · Structure no. 081387000000000
- Built
- 1951
- 74 years old
- Condition
- Poor
- inspected July 2024
- Type
- Channel Beam
- Concrete
- Length
- 48 ft
- 3 main spans
- Daily traffic
- 300
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
NE 175th ST over Swamp Creek is a concrete channel beam carrying NE 175th ST over Swamp Creek in King County, Washington. It was built in 1951, so it is 74 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 300 vehicles a day, roughly 3% of them trucks, projected to reach 375 by 2039. The structure is 48 ft (14.6 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NE 175th ST over Swamp Creek built?
It was built in 1951, making it 74 years old in 2025.
What condition is NE 175th ST over Swamp Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does NE 175th ST over Swamp Creek carry?
About 300 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is NE 175th ST over Swamp Creek?
The structure is 48 ft (14.6 m) long with a longest span of 16 ft (4.9 m) and a deck 24 ft wide.
Who owns NE 175th ST over Swamp Creek?
It is owned by the City or Municipal Highway Agency.