During the Great Depression, the Works Progress Administration (WPA) gave jobs and income to many fellows who otherwise had nothing. They built a lot of buildings, parks, bridges and other structures. Nowadays, we call it infrastructure. Regrettably, many of their works are drab. Take the Travis County courthouse in Austin, Texas… please.
At other times, the WPA did some eye-pleasing work. This bridge over the Brazos River, downstream from Possum Kingdom lake, is one of my favorites. Built in 1942. Consists of 18 spans. Still in use today.