Project ImpossibleStagione 1 Sostituisci immagineNumero di episodio10Engineering AmericaOverviewAmerica has a history of building the impossible. Across the nation, a new generation of impressive projects is underway. On this episode: New Tappan Zee Bridge; Los Angeles Subway; New Orleans pump station; Mount Rushmore preservation.Air dateJuly 26, 2017Runtime (min)41