National Route 121 (Argentina)
National Route 121 is a national road in Argentina, running East in Corrientes. In its  paved length, it joins Km 683 marker of National Route 14, near the town of Santo Tomé and the  Puente de la Integración ("Integration Bridge") of  over the Uruguay River crossing the border into Brazil to the town of São Borja. Main Points

 km 2.2: access to Santo Tomé
 km 5.3: toll booth
 km 5.5: border crossing and immigration booth
 km 7.6: international bridge

The road was built in 1997 by the Mercovias company along with the international bridge in a 25-year public lease. National roads in Corrientes Province
Tourism in Argentina