Aerial footage of a sailing boat travelling beneath the old Forth Road Bridge at South Queensferry on a sunny day in West Lothian, Scotland

queensferry firth of forth cantilever bridge forth road bridge forth bridge forth rail bridge queensferry crossing bridge forth infrastructure scotland scottish estuary south crossing river aerial footage cantilever aerial view steel north aerial sailing boat structure sailing sea transportation architecture railway landmark construction travel from the air firth engineering water historic suspension building icon iron metal historical elevated traffic rail road iconic famous