February 2012
- We'll repave the stretch of I-5 near the I-405 interchange this spring.
- Check out recent construction photos and bookmark our construction update report for upcoming scheduled closures.
- What's a "braided ramp"? The new ramps resemble a braid from above. We've put together an animation to show how they will work.
- Sign up for e-mail updates to learn more about projects in Snohomish County.
Overview
We are building new on-and off-ramps on southbound I-5 in Lynnwood. The new on-ramp from SR 525 and I-405 areelevated over a new off-ramp to 196th Street SW. From above, this ramp configuration resembles a braid.
The new ramps separate traffic merging from I-405 and SR 525 to southbound I-5 from traffic exiting southbound I-5 to 196th Street SW. These improvements will help reduce congestion by eliminating lane-weaving and will help reduce the risk of rear-end and sideswipe collisions.
Why is WSDOT
making these improvements?
Keeping drivers safe is WSDOT’s top priority. Busy residential and retail traffic exiting at 196th Street SW is causing severe backups onto southbound I-5 as fast traffic mixes with slow moving traffic exiting to the 196th Street interchange. These traffic flow problems lead to rear-end and sideswipe collisions.
The End Result
With the braided ramp configuration, drivers exiting to 196th Street SW from southbound I-5 will be separated from the traffic entering southbound I-5 from SR 525 and I-405. These improvements will eliminate lane-weaving, and help reduce rear-end and sideswipe collisions and congestion.
Project Benefits
• Safety - By providing a braided ramp, we will eliminate lane-weaving on the mainline, and decrease rear-end and sideswipe collisions.
• Congestion relief - Drivers will get onto and off the freeway faster, easier and safer.
• Environment - We will upgrade stormwater storage and treatment facilities to ensure water quality for fish and other wildlife.
What is the project timeline?
September 2006 - We started design
April 26, 2010 - We advertised the project for competitive bidding
June 28, 2010 - We awarded the contract to Northwest Construction, Inc., who submitted the most competitive bid.
Aug. 9, 2010 - Construction began.
Aug. 20, 2010 - Crews reduced the ramp from southbound SR 525 to southbound I-5 to one lane for at least one year.
Sept. 23-26, 2011 - Crews will close the southbound I-5 on-ramps from SR 525 and I-405 Friday evening through Monday morning while they connect the new ramps to the freeway.
December 2011 - We expect to complete construction
Financial Information
| Financial Data for PIN 100537B |
| Funding Source |
Amount ($ in thousands) |
| 2003 Gas Tax (Nickel Funding) |
$0 |
| 2005 Gas Tax (TPA) |
$32,772 |
| Pre-Existing Funds (PEF) |
$0 |
| Total |
$32,772 |
|
How can I get more information?
Contact:
Cathy Arnold
WSDOT Project Engineer
Phone: (425) 225-8799
E-mail: arnoldc@wsdot.wa.gov
or
Bronlea Mishler
WSDOT Communications
Phone: (206) 440-4696
E-mail: mishleb@wsdot.wa.gov
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