Thomas Telford: highway engineer ahead of his time

Many of Thomas Telford's innovations in highway engineering were way ahead of his time, but are now familiar practice on modern motorways, ranging from using experiments to provide a rational basis for design to constructing massive cuttings, embankments and bridgeworks. The present paper describes the state of Britain's roads in the eighteenth century—when it took 230 h to travel between London and Edinburgh—and then discusses Telford's road-building activities and his novel approach to design. The disagreement with John McAdam is also described, together with an assessment of Telford's contribution to the evolution of modern highway engineering.