03 Oct 2018 Kym Graves Construction Schedule, Gandy Boulevard, Selmon Extension Blog, Selmon Extension Info October 3, 2018 Kym Graves Blog – What is a Segment Lifter? A Segment lifter is a mobile crane that moves segments around the casting yard. The lifter has a 110-ton capacity which is adequate for the segments for the Selmon Extension, which range from approximately from 55-80 tons. Share this...FacebookTwitterLinkedinemail