I am very hopeful that the combination of drones, 3D printing, and information processing will combine to make a less intrusive infrastructure for our needs. That is, if you don't need to the build a highway to get materials and workers to a site to build a facility -- dam, bridge, breakwater, broadcast tower, etc -- the overall impact can be less and, moreover, hidden from sight. The whole job can be done remotely. Core77 has some useful information/videos related to this this week. See 4 Drone Projects Change the Comtemporary Landscape.
The downside, of course, is that vandals can also use the same technology to break infrastructure. I am currently waiting for the first instance of skyscraper graffiti.
Update: I did not have to wait long! The Drone That Will Change Graffiti: An Interview with KATSU.