
Scotland’s Top Bridge Engineer on Why Fixing Old Roads Is More Than Just Steel and Concrete
Scotland’s road network isn’t just tarmac and traffic—it’s a sprawling, aging, often stubborn web of over 5,000 structures that quite literally hold the country together. And as Hazel McDonald puts it, keeping them standing is anything but straightforward. McDonald, the chief bridge engineer at Transport Scotland, is responsible for one of the most thankless yet crucial jobs in the nation’s infrastructure ecosystem. Her team looks after everything from culverts and gantries to high masts, retaining walls, and the 2,070 bridges that dot the national trunk road network. “We’re basically working with infrastructure that’s showing its age,” she says, without sugarcoating.…