I-5/Wilsonville Road Interchange Improvements

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The I-5/Wilsonville Road Interchange

The Oregon Department of Transportation and the City of Wilsonville are developing options for managing this busy freeway interchange. In its current condition, the interchange area experiences daily traffic backups due to insufficient ramp lengths and lane configurations.

Where is this project?

Click here for a map of the project area

What are the project goals?

This project will improve traffic flow on Wilsonville Road and the interchange ramps and provide greater capacity. Freeway ramps will be widened and lengthened and interchange traffic signals will be upgraded. Pedestrian improvements are envisioned in the interchange area.

What is happening at the Parkway Avenue intersection?

As part of this improvement project, steps are being taken to improve safety at the intersection of Parkway Avenue and Wilsonville Road.

When the I-5/Wilsonville Road Interchange was last improved in 1998, the plan included the closure of the intersection of Parkway Avenue and Wilsonville Road for both safety and functionality reasons. After many discussions, ODOT and the City agreed to restrict the intersection to right in-right out turning movements on an interim basis until this subsequent phase of interchange improvements when the intersection would be fully closed per the access control plan.

Due to the widening of the I-5 northbound off ramp and Wilsonville Road as part of the current project, the remaining turning movements into Parkway will no longer be safe. As a result, access to Parkway will be closed and traffic will be routed one block over to the signal-controlled intersection at Town Center Loop West. A cul-de-sac at the end of Parkway Avenue near Wilsonville Road is anticipated.

What is the design phase?

This project is currently in its design phase, which includes:

• surveying
• environmental services
• pavement design
• traffic analysis
• hydrological/hydraulic analysis
• geotechnical services
• roadway design
• structure design
• landscape design
• identification of ROW impacts
• utility coordination
• public involvement

What is the anticipated schedule?

Spring 2010: Project design activities completed
Summer 2010: Construction Start
Summer 2012: Construction complete

How much will this project cost?

The estimated cost of this project is $20 million.

For more information, contact:
Elizabeth Craig, Community Affairs Coordinator
Oregon Department of Transportation - Region 1
(503) 731-8237
elizabeth.craig (at) odot.state.or.us