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I-405 - SB SE 8th St to Northup Way Vic - Paving


May 2015

  • Permanent reflective striping work is scheduled to begin Sunday, May 17. Striping work is weather-dependent. It should be completed in late May or early June.
  • This project was declared operationally complete on Sept. 22, 2014. Operationally complete means the majority of the work is complete and the roadway is open to traffic.
  • Check the I-405 corridor construction update report for lane and ramp closures on this project. Look for "I-405: SE 8th to Northup Way Paving - #8601"


In summer 2014, crews will repave and resurface 2.03 miles of southbound Interstate 405 from State Route 520 to Southeast 8th Street in Bellevue. Crews will also repave three ramps. Resurfacing and repaving will extend the life of the roadway and provide drivers with a safer, smoother ride.

What can drivers expect?

• Night time lane closures Sunday through Friday in the work zone.

Why is WSDOT repaving southbound I-405 from Northup Way to Southeast 8th Street?

This section of I-405 carries approximately 175,000 vehicles a day and hasn’t been repaved since 1995. Over the years, increasing traffic volumes and weather have contributed to deterioration of the existing pavement, resulting in noticeable bumps, ruts and cracks. Failing pavement and heavy traffic mean it’s time for a long-term fix that will continue to keep drivers moving along safely.

Repaving helps keep drivers safe and extends the life of I-405.
• Water can pool in rutted sections of road. Drivers' wheels can lose traction when traveling through pooled water at high speeds.
• Repaving reduces bumps and ruts making for a safer, smoother ride.
• Repaving helps strengthen and preserve the road surface, allowing this stretch of I-405 to continue handling heavy traffic loads on a daily basis.

Doing the work now saves money in the long term by reducing the need for emergency and spot repairs in the future.

The End Result

Crews will grind, mill and repave 2.03 miles of southbound I-405 near Bellevue. The work will extend the useful life of the roadway, create a smoother ride and improve safety for drivers.

Project Benefits

Improved safety – Repaving the highway surface helps reduce potholes and wheel ruts making for a smoother, safer ride for drivers.

Extends the life of I-405 – Repaving reduces the need for emergency repairs, which are costly to taxpayers and can cause unwanted congestion during rush hour.

What is the project timeline?

  • Spring 2014 – Advertising for competitive bidding.
  • April 28, 2014 - Awarded to C.A. Carey Corporation.
  • Summer 2014 - Construction starts.
  • Sept. 14, 2014 - Project declared operationally complete. 

Financial Information

The total estimated project cost is $5.1 million from Pre-Existing Funds (PEF) and the 2005 Gas Tax (TPA).

How can I get more information?
Mark Sawyer
WSDOT Project Engineer
(425) 225-8799

Kris Olsen
WSDOT Communications
Phone: (206) 440-4704

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