98th Ave NW over Irvine Slough
GoodSnohomish County, Washington · 0.1 S JCT SR 532 · Structure no. 085959000000000
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected November 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 64 ft
- 1 main span
- Daily traffic
- 175
- 2019 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
98th Ave NW over Irvine Slough is a prestressed concrete tee beam carrying 98th Ave NW over Irvine Slough in Snohomish County, Washington. It was built in 1991, so it is 34 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 175 vehicles a day, roughly 15% of them trucks, projected to reach 300 by 2045. The structure is 64 ft (19.6 m) long and 37 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 98th Ave NW over Irvine Slough built?
It was built in 1991, making it 34 years old in 2025.
What condition is 98th Ave NW over Irvine Slough 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 November 2023.
How much traffic does 98th Ave NW over Irvine Slough carry?
About 175 vehicles per day (2019 count), of which roughly 15% are trucks.
How long is 98th Ave NW over Irvine Slough?
The structure is 64 ft (19.6 m) long with a longest span of 60 ft (18.3 m) and a deck 37 ft wide.
Who owns 98th Ave NW over Irvine Slough?
It is owned by the City or Municipal Highway Agency.