Q RD over I-90
GoodGrant County, Washington · 5.4 E JCT SR 17 · Structure no. 0007621C0000000
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 217 ft
- 4 main spans
- Daily traffic
- 651
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Q RD over I-90 is a prestressed concrete stringer/multi-beam or girder carrying Q RD over I-90 in Grant County, Washington. It was built in 1965, so it is 60 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 651 vehicles a day, roughly 5% of them trucks, projected to reach 851 by 2039. The structure is 217 ft (66.1 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Q RD over I-90 built?
It was built in 1965, making it 60 years old in 2025.
What condition is Q RD over I-90 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 July 2024.
How much traffic does Q RD over I-90 carry?
About 651 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is Q RD over I-90?
The structure is 217 ft (66.1 m) long with a longest span of 58 ft (17.7 m) and a deck 33 ft wide.
Who owns Q RD over I-90?
It is owned by the State Highway Agency.