HS2 completes complex Colne Valley viaduct manuvre

Over the past few weeks, HS2 has been moving a 40-metre section of the long Colne Valley viaduct into place over a main road in west London.
Colne Valley Viaduct over Moorhall Road (c) HS2
HS2 had to close the Moorhall Road near Harefield, in order to bring in cranes to lift eleven of the 115 to 130-tonne segments into position over the road. These were then strengthened with internal steel cabling to complete the span.
Normally, most of these segments are slotted into place by a giant 700-tonne