I-90 over Medical Lake RD
PoorSpokane County, Washington · 5.6 E JCT SR 902 · Structure no. 0007903A0000000
- Built
- 1966
- 59 years old
- Condition
- Poor
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 130 ft
- 3 main spans
- Daily traffic
- 11,409
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-90 over Medical Lake RD is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over Medical Lake RD in Spokane County, Washington. It was built in 1966, so it is 59 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 11,409 vehicles a day, roughly 25% of them trucks, projected to reach 13,699 by 2039. The structure is 130 ft (39.6 m) long and 40 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-90 over Medical Lake RD built?
It was built in 1966, making it 59 years old in 2025.
What condition is I-90 over Medical Lake RD 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 2023.
How much traffic does I-90 over Medical Lake RD carry?
About 11,409 vehicles per day (2023 count), of which roughly 25% are trucks.
How long is I-90 over Medical Lake RD?
The structure is 130 ft (39.6 m) long with a longest span of 44 ft (13.4 m) and a deck 40 ft wide.
Who owns I-90 over Medical Lake RD?
It is owned by the State Highway Agency.