Metrô Rio opens Line 1 extension March 18, 2014 | Latin America News Rio de Janeiro’s metro rail developer Metrô Rio has operationalised the Saens Peña-Uruguai extension of Line 1, which spans 1.1 km and covers one station. Line 1 now extends 20.1 km... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password