This lecture covers the evolution of cable-stayed bridges, starting from early examples like the Tempul Aqueduct in Spain and the Pont de Donzère-Mondragon in France, to modern structures like the Russky Bridge in Russia. The instructor discusses the principles behind the choice of stays, the sizing criteria for shrouds, and the effective modulus of elasticity in concrete bridges. The lecture also delves into the distribution of forces in bridge structures, the selection of reinforcement characteristics, and the importance of proper anchoring and spacing in bridge design.