The engineer employs a systematic approach wherein the optimal design for the bridge is developed prior to any attempts at construction. By evaluating various bridge designs and conducting thorough calculations, the engineer carefully chooses the design that exhibits maximum reliability and will withstand potential failures. Subsequently, the engineer meticulously selects the appropriate materials from those readily available to ensure that the chosen design does not result in structural failure.
These meticulous pre-construction measures are undertaken to prevent unnecessary expenditure and to ensure efficient resource allocation.