 The RN19 has been subsequently downgraded in several sections to the RD319 and RD619.Paris - Provins - Troyes - Chaumont - Langres - Vesoul - 
Belfort - "Switzerland"

The road starts as the Quai d'Ivry on the south bank of the River Seine south east of the City centre.The road crosses the river just downstream from the River Marne on the Pont d'Ivry.