Stage 1: Harvard Avenue Developments
Preparing the Site
The first stage of the two stage I-5 Roanoke Vicinity Noise Wall Project is lengthy and complex. Although there has been minimal construction activity along Harvard Avenue East, the project is progressing. Crews have been preparing the site for the upcoming wall installation.
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| After clearing and grubbing the soil, crews began drilling shafts into the ground for the noise wall supports and foundations. |
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Each hole is 30 inches in diameter and 13 feet deep. After all of the shafts are drilled, construction crews will line each shaft with a sheet of steel to reinforce the hole and provide support for the panel anchors.
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| The image above shows two anchor bolts laying side by side before they are positioned in the shaft. The curved ends are where the noise panels will be attached to each bolt. |
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Once the shafts are drilled and lined, crews place anchor bolts vertically into the holes. After the anchor bolts are inserted, cement is poured over the bolts to form the structural support for the noise panels.
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This last image shows a completed shaft after the cement was poured over the anchor bolt and the base has cured. Once all the shafts are formed, noise panels will be attached. |
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Noise Wall Fabrication
Meanwhile, in Puyallup, crews were fabricating the noise walls in preparation for installation.
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The rebar skeleton of a noise wall. |
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The rebar is then placed in a mold for the noise wall and cement is poured over it.
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Here crew members take final measurements and position the rebar within the noise wall mold.
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After the cement is poured, this machine will apply texture to the walls for added noise diffraction.
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| Crews carefully add texture to a recently poured noise wall. The walls with smoother textures will face Harvard and Bolyston Avenues, while the opposite sides that will face I-5 will have more rough striations. |
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Finished Noise Walls
Below are images of recently completed noise walls. After they have cured they will be taken to Harvard Avenue and attached to the anchor bolts.
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A finished Harvard Avenue noise wall panel curing in the sun.
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Each ridge on the Harvard side of the noise walls is approximately one inch wide. These ridges help further mitigate noise pollution from nearby traffic.
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| A finished noise wall - the side shown will face I-5. |
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The ruler lends perspective to the size of the grating. |
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Installed Noise Walls Along Harvard Avenue
These recent images show installed noise walls along Harvard Avenue.
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The view of the Harvard Avenue noise walls facing south.
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A view of installed noise walls, looking west from the North Capitol Hill neighborhood.
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Installed noise walls along Harvard Avenue East with view of downtown Seattle.
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Noise walls along Harvard Avenue Easat facing north.
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Crew members put finishing touches on installed noise walls along Harvard Avenue East.
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A Mowat crew member uses a drill to smooth the texture of the installed noise walls.
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Triangular architectural treatments at the base of the Harvard Avenue East noise walls.
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A close-up of the architectural treatments at the base of Harvard Avenue East noise walls.
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A Mowat team member inspects a noise wall panel before it is installed. |
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A crane lifts a noise wall and positions it for installation.
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Completed Harvard Avenue Noise Walls
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A view of the completed Harvard
Avenue noise walls looking west
from the Roanoke Park and Portage
Bay neighborhoods.
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The completed Harvard Avenue
walls facing south with a view of Seattle.
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An angled view of the Harvard
Avenue nosie walls looking north.
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A view of the Harvard Avenue architectural treatments looking south.
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A close-up of the Harvard Avenue architectural treatments. |
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The completed Harvard Avenue
noise walls.
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Stage 1 Completion and Stage 2 Groundbreaking Celebration
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Community representative Colleen McGrath helps celebrate the completion of the Harvard avenue noise walls. |
The Roanoke Vicinity Noise Wall Project Team and Secretary of Transportation Doug MacDonald stand with the Stage 2 Nickel sign. |
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Speaker of the House Frank Chopp, community representative Colleen McGrath, and Representative Ed Murray stand with the Nickel sign for the future Boylston avenue noise walls. |
The noise wall construction team pose with the new Nickel sign after the unveiling ceremony.
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Community members mingle with the Roanoke Vicinity Noise Wall Project Team after the Stage 2 unveling and celebration.
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Secretary of Transportation Doug MacDonald and Project Director Maureen Sullivan talk with a community member following the unveiling.
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Stage 2: Boylston Avenue Developments
Architectural Treatments
Below are recent images of the architectural treatments that will adorn the noise walls after they have been installed. Local artists and the surrounding communities designed these.
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This panel will be installed onto the noise walls along the Bolyston Avenue side of the project. This panel is 12 feet long by 3 feet wide. This is one of two designs that will be used for this project.
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The panel above is a close-up of the architectural treatment to the left. |
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| A butterfly design that will appear on the Bolyston side of the noise wall. |
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Here is a side view of one of the architectural treatments that will run along Boylston Avenue. |
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Construction Progress
Recent construction photos from along Boylston Avenue.
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A north facing view of the construction along Boylston Avenue.
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Construction progress looking north along I-5 and Boylston Avenue east
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A south facing view of construction along Boylston Avenue east. |
Crews begin drilling shafts for noise wall supports along Boylston Avenue. |
Completed Boylston Avenue Wall
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Completed noise wall along
Boylston Avenue. |
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