The kcICON project in Kansas City, Missouri is using Facebook and YouTube as a public relations tool. They have recently posted new videos and pictures. The latest video is of demolition of one of the existing approach structures. It is all done for public relations, so the photos and videos are oriented for the general public, showing how the project is moving along, how their tax dollars are being spent, and providing information on lane closures, etc.
I expect we’ll see more use of Facebook, Twitter, etc. on projects in the future. It appears to be effective, at least for the techno-savy crowd!