Diverging Diamond Interchange at I-90/SR 18
Sector: Road • Location: Snoqualmie, Washington, United States
Source: Living Snoqualmie
The Washington State Department of Transportation (WSDOT) opened the state’s second diverging diamond interchange at the I-90/SR 18 interchange near Snoqualmie. The project improves traffic flow and safety by shifting traffic to the left side beneath I-90, eliminating left turns across oncoming traffic. It is part of a broader project to widen SR 18, including new bridges and wildlife improvements
- Status
- Closed
- Sector
- Road, Government
- Location
- Snoqualmie, Washington, United States of America
- Updated
- 22 Jul 2026
- Source
- Living Snoqualmie
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Project Information
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Sponsoring Agency |
Status
Original status | completed |
Taiyo status | Closed |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | The Washington State Department of Transportation (WSDOT) opened the state’s second diverging diamond interchange at the I-90/SR 18 interchange near Snoqualmie. The project improves traffic flow and safety by shifting traffic to the left side beneath I-90, eliminating left turns across oncoming traffic. It is part of a broader project to widen SR 18, including new bridges and wildlife improvements. |
Original sector | Transportation |
Budget |
Location
Country | United States of America (USA) |
State | Washington |
City | Snoqualmie |
Source
Source | Living Snoqualmie |
URL |
More Details
Record type | Project |
Sector | Road, Government |
Article published date | 2025-09-16 |
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