Zipper Truck in Action - Courtesy: Golden Gate Bridge District.MP4 from Golden Gate Bridge District on Vimeo.

This is what the whole thing was for, apparently. You know, the money and the closure that may have surprised at least a few people despite frequent warnings!

We saw an informational preview a while back explaining the operation of the $26.5 million project to replace the previous system of plastic tubes with a 11,538-foot-long steel and concrete median. The "Zipper Truck" shifts 800 separate 1,500 pound pieces of the barrier into the designated lane.

Anyway, this may be the most viral-worthy Golden Gate bridge video since those deer incapacitated commuters this fall.