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15th Ave NE/NE 105th St Bridge Seismic Project Updates

Construction updates: December 23, 2024 

As a result of timeline delays, the upcoming temporary construction on the 15th Ave NE/NE 105th St Bridge will now begin *as soon as January 6, 2025*! We anticipate this work will last through late January 2025, though construction schedules are subject to change and depend on factors such as weather and availability of crews and materials.  

As a reminder, crews will be potholing for utilities to prepare for seismic retrofit work. There will be *increased construction traffic on NE 105th St for the duration of this work*, as crews’ primary access to the work site will be below the bridge off NE 105th St. After the potholing is complete, work will stop until crews return as soon as early 2025 to begin construction on retrofits to help the 15th Ave NE/NE 105th St bridge better withstand earthquakes.  

15th Ave NE & NE 105th St Bridge Seismic Retrofit overview map, showing local area and bridge

"Map showing the location of the 15th Ave NE/NE 105th St Bridge." 

As the start of seismic retrofit construction next year approaches, we will share information about what to expect during that work via these email updates and on our project webpage [ https://www.seattle.gov/transportation/projects-and-programs/programs/bridges-stairs-and-other-structures/bridges/15th-ave-ne-bridge-seismic-retrofit?utm_medium=email&utm_source=govdelivery ].Please feel free to share this email with your neighbors and encourage them to sign up for email updates [ https://public.govdelivery.com/accounts/WASEATTLE/subscriber/new?qsp=WASEATTLE_8 ] to stay informed on the project.   

*What to expect during construction* 

Crews will start potholing work as soon as January 6, 2025 to prepare for seismic retrofit construction which will begin in early 2025. During this potholing work, you can expect the following construction impacts: 


* Three phases of temporary one-lane, two-way operation on 15th Ave NE  

* Phase One: The northbound side of 15th Ave NE will be closed between NE 103rd St and NE 104th St. Flaggers will be on-site to alternate traffic, as needed.  

* Phase Two: The northbound side of 15th Ave NE will be closed between NE 104th St and NE 106th St. Flaggers will be on-site to alternate traffic, as needed.  

* Phase Three: The southbound side of 15th Ave NE will be closed between NE 106th St and NE 104th St. Flaggers will be on-site to alternate traffic, as needed.  

* Noise, dust, vibrations, and construction equipment staged within the project area  

* Typical weekday work hours of 7 AM – 5 PM, Monday through Friday  

We will maintain access to residences at all times. If at any point we need to temporarily restrict driveway access for homes adjacent to the bridge, we will communicate directly with affected residents prior to any restriction.    

Once construction begins next year, it is expected to take around 12 months to complete. During this time, there may be times when parts or the entire bridge will be closed. We will carefully plan alternative routes for pedestrians, cyclists, and drivers to use while the closures are in effect. These alternate routes will be finalized closer to the start of construction. 

We understand that the bridge closure will inconvenience those who regularly use it, and we will do our best to minimize the impact. In the next couple of months, we will reach out to individual property owners and neighbors to discuss any specific impacts to their properties and any permissions that may be needed for access during construction. We appreciate your patience throughout this process.  

"You are receiving this email because you have expressed interest in receiving updates about the 15""th"" Ave NE/ NE 105""th"" St bridge project.  " 

________________________________________________________________________



*Thank you! *     

Thank you for your interest in the 15th Ave NE/NE 105th St Bridge Seismic project and for your patience during construction.    

*Contact Us: * 

If you have questions, don’t hesitate to reach out via email or phone.     


* Project webpage: 15th Ave NE Bridge Seismic Retrofit [ https://www.seattle.gov/transportation/projects-and-programs/programs/bridges-stairs-and-other-structures/bridges/15th-ave-ne-bridge-seismic-retrofit?utm_medium=email&utm_source=govdelivery ] 

* Email: BridgeSeismicRetrofit@seattle.gov 

* Phone: (206) 775-8734 

Thank you,    

Matthew Howard 

Outreach & Communications Lead   

15th Ave NE/NE 105th St Bridge Seismic Project   






*Seattle Department of Transportation*

700 5th Avenue

Suite 3800

Seattle, WA 98104

*Phone: 206-684-7623*

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