Transport was much improved: in 1824 the Canal Saint-Denis was constructed, linking the Canal de l'Ourcq in the northeast of Paris to the River Seine at the level of L'Île-Saint-Denis, and in 1843 the first railway reached Saint-Denis.
Angkutan lebih diperbarui: tahun 1924 Canal Saint-Denis dibangun, menghubungkan Canal de l'Ourcq di timur laut Paris dengan Sungai Seine di L'Île-Saint-Denis, dan pada 1843 jalur kereta pertama mencapai Saint-Denis.