SR 900 over Tibbetts CR
GoodKing County, Washington · 9.0 E JCT I-405 · Structure no. 0009931A0000000
- Built
- 1975
- 50 years old, rebuilt 2009
- Condition
- Good
- inspected January 2024
- Type
- Channel Beam
- Prestressed Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 22,004
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 900 over Tibbetts CR is a prestressed concrete channel beam carrying SR 900 over Tibbetts CR in King County, Washington. It was built in 1975 and reconstructed in 2009, so it is 50 years old, older 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 22,004 vehicles a day, roughly 4% of them trucks, projected to reach 33,791 by 2039. The structure is 30 ft (9 m) long and 81 ft wide. If it were closed, the detour would be 13 mi (21 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 SR 900 over Tibbetts CR built?
It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2009.
What condition is SR 900 over Tibbetts CR 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 January 2024.
How much traffic does SR 900 over Tibbetts CR carry?
About 22,004 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is SR 900 over Tibbetts CR?
The structure is 30 ft (9 m) long with a longest span of 28 ft (8.6 m) and a deck 81 ft wide.
Who owns SR 900 over Tibbetts CR?
It is owned by the State Highway Agency.