For MCI, replacing gear on the surface means unhooking customers whose traffic went on that route, rerouting their traffic, and then doing it all in reverse when the new equipment is in.

FORBES: Grand illusions

Norovirus spreads easily via contaminated food or drinking water, but a more insidious route is from a person touching a surface contaminated with the residue of stool or vomit from an infected person and then touching his or her mouth before hand-washing.

FORBES: Magazine Article

In another scheme to resurface the main route for vehicles in the square, sub-contractors are having to relay the road surface after problems were identified.

BBC: Caernarfon Castle Square parking ban for many motorists

While most of the route in London will be underground, most of west London's Ealing will have HS2 on the surface.

BBC: Ealing battles to get HS2 to go underground