Mexican documentarian Juan Carlos Rulfo (whose 1999 feature debut Juan, I Forgot, I Don't Remember focused on his father, author Juan Rulfo) tracks the construction of the mammoth “Second Deck,” an elevated highway that extends over ten miles across Mexico City. A few workers are profiled, and while their remarks are seldom inspired, the work they do and the dangers they face eventually imbue their words with a dark significance: one of them sets the tone with her theory that, because of all the accident deaths, the devil hangs around the site looking for souls. Rulfo closes with a spectacularly long, low aerial shot surveying the entire length of the bridge, which passes over working-class neighborhoods and seems like a superstructure over the lives of the poor. In Spanish with subtitles. 84 min.