- This project is on hold until we receive funding.
- Drivers can sign up to receive e-mail updates about work along the SR 522 corridor and other state highways in Snohomish County.
We will replace the existing intersection at State Route 522 and Paradise Lake Road in Maltby, just north of Woodinville, with a new interchange.
Why is WSDOT
building a new interchange at SR 522 and Paradise Lake Road?
The interchange will alleviate bottlenecks that occur each day during the morning and afternoon commutes at this intersection in Maltby. It will also reduce the likelihood of rear-end collisions, greatly improving driver safety.
The End Result
We will replace the existing traffic signal with a freeway interchange. On-ramps and exits and a new bridge over the highway will result in smoother transitions between SR 522 and adjacent county roads. This will greatly improve traffic flow and driver safety.
- Safety: Building an interchange at SR 522 and Paradise Lake Road will increase traffic flow and decrease congestion. Improving flow will decrease rear-end collisions during stop and go conditions, making the roadway safer for drivers.
- Congestion Relief: A new interchange means increased flow, which will cut down on drive times and driver frustration.
- Environment: We will build detention ponds to improve water storage quality. The ponds will collect and filter dirty rain water from the highway before it is released slowly into the adjacent creeks, benefitting salmon and other wildlife. The ponds also reduce the potential for flooding in area creeks.
What is the project timeline?
Once we receive funding, it will take an additional 3 - 3.5 years to complete project design, purchase property and get environmental permits.
Design of the new SR 522/Paradise Lake Road interchange is 30 percent complete, but there are no funds available to complete design and construction. Environmental requirements, right of way needs, and design standards will need to be revisited when funding becomes available.
This project is funded through the following fund sources:
- Existing Funds - $6,231,489
- Other Agency Funds - $86,788
These funds are provided by developer mitigation.
- Total Funding Available from all Sources - $6.3 million
- Total Project Cost Estimate - $109.4 million
How can I get more information?
Engineering Manager Cathy George
Communications Kris Olsen
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