Civil engineers would argue they are the unsung heroes of the railways, roads and bridges we all take for granted. But building major infrastructure projects is a complicated business. So how do you go about putting up a bridge? Are you limited by engineering or economics? Evan Davis tries to find the answer from three civil engineers.

GUESTS

Mike Glover, Arup Fellow

Louise Hardy, Civil Engineer, Non-Executive Director Sirius Minerals and Ebbsfleet Development Corporation

Katy Toms, Senior Engineer, WSP Engineering Consultancy.