WSDOT will replace expansion joints on I-5 north and south of I-90.(view larger map
The expansion joint pictured above no longer has a steel cover preventing rain, sediment and weeds from building up inside the joint. View Flickr set
Look inside an expansion joint (view
- Construction on the second and final phase of this project begins in January 2014 and ends in June 2014.
- During phase two, crews will replace several large expansion joints across both directions of I-5 near the I-90 interchange.
- Phase two construction requires partial closures of northbound and southbound I-5 between the Spokane Street interchange (West Seattle Bridge) and Cherry Street.
- Crews will work weeknights, up to six full weekends and two holiday weekends (Martin Luther King Jr. weekend and Presidents' Day weekend) between January and June 2014.
- View photos of damaged expansion joints and ramp roadway decks.
What we're doing:
In early 2014, crews will begin phase two of this project, replacing a series of aging highway-wide expansion joints on I-5 in three locations:
- Location one: northbound I-5 south of the I-90 interchange between S. Spokane Street (West Seattle Bridge) and the S. Columbian Way on-ramp to northbound I-5.
- Location two: Northbound and southbound I-5 north of I-90 between S. Jackson Street and James Street.
- Location three: Northbound I-5 collector-distributor between S. Dearborn Street and James Street.
- Location four: Southbound I-5 collector-distributor between Spring Street and S. Dearborn Street.
The Seattle Bridge Repair Project is divided into two phases of construction:
Phase one (completed in October 2013):
- Crews resurfaced off-ramps and replaced expansion joints at the Corson Avenue South and South Spokane Street interchanges and across northbound I-5 at Lakeview Boulevard north of downtown Seattle. Phase two begins in January 2014.
Phase two: Jan. through June 2014:
- Crews will replace several large, highway-wide expansion joints across northbound and southbound I-5 between the South Spokane Street interchange and Cherry Street.
What will be closed during Phase two?
Construction is scheduled to begin in January and last through June 2014.
Drivers should expect lane and ramp closures on northbound and southbound I-5 between the South Spokane Street interchange (West Seattle Bridge) and Cherry Street. There also will be closures on the northbound and southbound collector-distributor.
What does the I-5 collector-distributor do?
The collector-distributor (CD) runs parrallel to mainline I-5. The southbound CD distributes traffic from mainline I-5 to I-90, S. Dearborn Street, Airport Way and Fourth Avenue South. The northbound CD distributes traffic from mainline I-5 to I-90, S. Dearborn Street, James and Madison streets.
Will WSDOT close I-5 to do the work?
At least one or two lanes will always remain open on northbound and southbound I-5 and the collector-distributor throughout the work zone. Crews will not close all lanes of the highway at once.
Where can I find out what's closed?
We will update the yellow status box found at the top of this page with the most current lane and ramp closure information. Drivers also can stay informed of project and region-wide construction closures by checking our weekly King County Construction Update Report found here.
Lane and ramp closures will be coordinated with other projects in the area to minimize delays as much as possible. Signed detours will be in place.
Why is WSDOT
Repairing expansion joints and resurfacing off-ramps on I-5 in Seattle?
Expansion joints stretch across all lanes of the highway or bridge, linking together concrete slabs in a way that allows the roadway to bend and flex with heavy, uneven traffic and the annual freeze/thaw cycle.
The original steel expansion joints on I-5, and ramps connecting I-5 to Corson Avenue South and South Spokane Street are breaking up and allowing water and contaminates to flow onto the bottom of the girder, which is leading to the deterioration of the concrete and steel underneath the bridge.
Additionally, these expansion joints are more than 50 years old, and are failing at a high rate. Failing expansion joints can lead to collisions, emergency closures and expensive emergency repairs.
The End Result
Replacing the original, 50-year-old expansion joints with new, watertight joints will bend and flex as the concrete expands and contracts with changing traffic and weather patterns, which is expected to improve safety for drivers.
The resurfaced ramp decks will improve safety for drivers by eliminating potholes and wheel ruts, which can cause vehicle damage and hydroplaning when it rains.
- Safety - pavement improvements and new expansion joints improve the driving surface, which decreases vehicle damage and possible collisions caused by traffic backups.
- Maintenance - stronger expansion joints will require less maintenance.
- Preservation - new, stronger expansion joints extend the life of the roadway.
What is the project timeline?
- March 2013 - Phase one was awarded to Mowatt Construction, Inc.
- July 2013- Phase one construction begins.
- Oct. 2013 - Phase one complete.
- September 2013 - Phase two awarded to PCL Construction.
- January 2014 - Phase two construction begins.
- June 2014 - Phase two expected completion.
|Financial Data for PIN 100516D, 100518T, 100521Z, 100562S
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
Project signage will reflect the cost of construction engineering, project bid award and sales tax.
How can I get more information?
WSDOT Project Engineer - Construction
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