Road Zipper in action at the tail end of its morning run

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Some closeups of the Barrier Transfer Machine (BTM) repositioning the new Moveable Median Barrier (MMB) on the Golden Gate Bridge at the tail end of its Thursday morning run on January 15, 2015. It started at the northern (Marin) end and this video is of it reaching the end of its run at the southern (San Francisco) end, near the toll plaza.
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