Apparently the elevated walkway was installed in less than 1 day (with major parts of it being pre-fab). But it sounds like it wasn't the complete project, which was expected to be finished in 2019:

> Once it’s finished in early 2019, the new pedestrian bridge will link FIU’s Modesto A. Maidique Campus directly to the small suburban city of Sweetwater, where the university estimates 4,000 of its students live.

http://www.miamiherald.com/news/local/community/miami-dade/w...