The modal share of container barging in French maritime ports (9% of TEU in Le Havre and 4,7% in Marseille in 2010) is significantly lower than elsewhere (32% in Rotterdam and 33% in Antwerp) (Blum, 2011). Some reports and studies explain the viscosity of container barging flows as a result of several factors, generally concentrated around the seaport community. In continuation of previous seminal works, this paper adopts a neo-institutional approach (Williamson, 1985; 1996) of container barging to understand how the factors generating this viscosity are managed in the Rhône-Saône river basin. Section 1 describes the characteristics of the transaction of container barge transport. Section 2 deals with observed governance structures (Logirhô...