This view of Colman Dock shows a much more open holding lane area with much of the construction equipment gone and the temporary walkway removed.
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The north side of Colman Dock is supported by old creosote timber piles that cannot support the weight of the construction crane needed to demolish and rebuild the dock. The solution: build a platform that can support the weight. For two weekends in Oct. 2018, we closed down the north half and drove in eight steel piles to support the new crane platform. Now, we are building the top section of the platform so that the crane can sit on it. The crane will be used to pull out the old timber piles and drive in new steel piles. It also will be used to demolish large sections of the north half of the dock. All pile pulling and pile driving work for this stage of construction occurs during daylight hours only from November 2018 through Feb. 2019. The work is part of the Seattle Multimodal Terminal at Colman Dock Project.
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September 2017: Hundreds of steel support columns will replace thousands of aging timber piles currently holding up today's terminal building, and much of the existing dock.
Each massive steel pile is up to three feet wide and 150 feet long. That means one steel pile can cover the same amount of ground as three or more old wooden piles.
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Aluminum rings are slid over the pilings like the rings on a shower curtain rod before any banging starts. Air pumped into the rings produces a sheath of bubbles in the water around the pile. The froth generated in the water is called a bubble curtain.
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October 2017: Governor Jay Inslee shakes hands with four Colman Dock Project construction crew members inside the Seattle ferry terminal building.
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