WB I-90 over Tibbetts Creek
GoodKing County, Washington · 5.4 E JCT I-405 · Structure no. 0016658A0000000
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 47 ft
- 1 main span
- Daily traffic
- 40,835
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
WB I-90 over Tibbetts Creek is a prestressed concrete slab carrying WB I-90 over Tibbetts Creek in King County, Washington. It was built in 2004, so it is 21 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 40,835 vehicles a day, roughly 5% of them trucks, projected to reach 61,900 by 2039. The structure is 47 ft (14.3 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB I-90 over Tibbetts Creek built?
It was built in 2004, making it 21 years old in 2025.
What condition is WB I-90 over Tibbetts Creek 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 WB I-90 over Tibbetts Creek carry?
About 40,835 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is WB I-90 over Tibbetts Creek?
The structure is 47 ft (14.3 m) long with a longest span of 46 ft (14 m) and a deck 80 ft wide.
Who owns WB I-90 over Tibbetts Creek?
It is owned by the State Highway Agency.