Thor ST over I-90
PoorSpokane County, Washington · 2.3 E JCT US 2 · Structure no. 0005453C0000000
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 112 ft
- 2 main spans
- Daily traffic
- 19,798
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Thor ST over I-90 is a concrete continuous slab carrying Thor ST over I-90 in Spokane County, Washington. It was built in 1957, so it is 68 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.
It carries about 19,798 vehicles a day, roughly 5% of them trucks, projected to reach 28,286 by 2041. The structure is 112 ft (34.1 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Thor ST over I-90 built?
It was built in 1957, making it 68 years old in 2025.
What condition is Thor ST over I-90 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 October 2024.
How much traffic does Thor ST over I-90 carry?
About 19,798 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is Thor ST over I-90?
The structure is 112 ft (34.1 m) long with a longest span of 53 ft (16.2 m) and a deck 61 ft wide.
Who owns Thor ST over I-90?
It is owned by the State Highway Agency.