Credit: D Vlasov/ShutterstockThe world’s largest bridge construction projects are becoming less about opening new routes and more about keeping existing ones fit for purpose. The clearest evidence sits in the US, where the $17.7bn Interstate 5 Bridge Replacement is the highest-value scheme in GlobalData’s dataset and the $7bn I-5 Boone Bridge Replacement adds another large renewal programme at planning stage. The figures point to a market in which replacement work can command the same financial scale as new strategic links. China provides a second indication from the world’s largest bridge construction projects. Their inclusion still shows how major bridge work is often packaged within larger rail and road programmes rather than procured as a stand-alone asset.