To expand an entire production line, Abbott needed not only a new utility building, but also a complete pipe bridge over the existing production site in Zwolle. And this while production could also continue as usual. For the contractor, this meant that during a clean-up period he had a week to make piles in the existing building and leave everything clean again. The next period, the roof could then be opened for heavy, steel columns. Then the bridge sections with pipes already in them were lifted into place. Besides the pipe bridge, there were also various extensions of floors, silos and transport facilities.