The Millennium Bridge in London was one of the most iconic construction projects of the 2000s. But just two days after opening, the bridge had to close after visitors experienced an alarming sway from side to side.
The problem was that designers hadn’t anticipated just how much the bridge would vibrate as pedestrians crossed, or the “synchronous lateral excitation.” It was a mistake that took £5m and eight months to fix – and the landmark is still known as the wobbly bridge today.
Construction projects depend on thousands of details decided during the planning phase. But 86% of main contractors in the UK and Ireland admit that errors are made in preconstruction that impacts the project down the line, costing time, money, and untold stress.
With careful planning, it’s possible to head off many of the potential challenges on a project before breaking ground.