After these stations, Line 8 follows the Rue du Commerce. Because of the narrowness of the street, the Commerce station has staggered platforms. At the intersection of Rue du Commerce and Avenue Emile-Zola, the Line 8 tunnel is under Line 10 in a common structure. As the line reaches the La Motte-Picquet – Grenelle station, the eastbound Lines 8 (toward Créteil – Préfecture) and 10 (toward Austerlitz) use the same central platform; the westbound Line 8 (toward Balard) is under the westbound Line 10 for historical reasons.