Routine design When we think of bridges, it is the dramatic and monumental long spans that come to mind first, especially the lithe suspension bridges such as the Golden Gate and the pure geometric arches such as Sydney Harbour. But the majority of bridges are not such spectacular structures. Most of them are ordinary overpasses, with spans of 30 or 40 feet, carrying roadways or rails across other thoroughfares or over small streams. You see such bridges by the dozen on any drive down the Interstate. They may be lacking in glamour, but they are more representative of a bridge builder's art. The engineering and construction of girder bridges are pretty routine these days, but the bridges are not quite standard items you order from a catalogue. The girders, whether of steel or concrete, are custom-build for each bridge, then trucked to the site and hoisted into place with a crane. The designer still has scope for variation and creativity, and it shows out on the highways: some overpasses are prettier than others. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape engineeringdesignautomationroutine
Deliberate acts I do not know what one should call the landscape of a long cultivated countryside, or the enchanting pattern of lights which shows at night time in a modern city seen from overhead. Are these not works of art? It is scarcely justifiable to say that these things have taken shape by chance. Each part of them has been made as it is by what seemed a deliberate act, and it need not necessarily be assumed to be a matter of chance that the results of many acts of many men over a considerably period of time should harmonize together aesthetically. David Pye, The Nature and Aesthetics of Design The Timeless Way of BuildingA Pattern Language evolutionurbanism