Old 99 over Pilchuck Creek
PoorPosted for loadSnohomish County, Washington · 2.0 N JCT SR 530 · Structure no. 084183000000000
- Built
- 1933
- 92 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 180 ft
- 3 main spans
- Daily traffic
- 428
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Old 99 over Pilchuck Creek is a steel stringer/multi-beam or girder carrying Old 99 over Pilchuck Creek in Snohomish County, Washington. It was built in 1933, so it is 92 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 3 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: posted for load restriction.
It carries about 428 vehicles a day, roughly 10% of them trucks, projected to reach 700 by 2046. The structure is 180 ft (55 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Old 99 over Pilchuck Creek built?
It was built in 1933, making it 92 years old in 2025.
What condition is Old 99 over Pilchuck 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 Old 99 over Pilchuck Creek carry?
About 428 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Old 99 over Pilchuck Creek?
The structure is 180 ft (55 m) long with a longest span of 90 ft (27.4 m) and a deck 27 ft wide.
Who owns Old 99 over Pilchuck Creek?
It is owned by the County Highway Agency.