Work continues to be focused on erecting the launch truss.
As each section of the launch truss is erected, the truss is winched westward to make room to build the next section. At the end of last week, the contractor had completed nine of the launch truss bays (NL0–NL9), with eight more remaining.
Diagram of the existing launch truss inside the main truss. The end labeled NL0 will move left (to the west) as each new bay of the launch truss is built on the right (east) end.
A view from the west side of the slide.Photo courtesy of FHWA