The Brazilian government’s DNIT (Departamento Nacional de Infra-Estrutura de Transportes / National Department for Transport Infrastructure) has a web page where you can check out road conditions throughout the country.
You need to select the state you are interested on (they all appear listed on the left hand side of the screen) and then click on the rodovia (road) you want to check out.
The data is presented in a clear fashion but unfortunately in Portuguese only. The first column contains a description of the road conditions. The second column refers to the stretch of the road. The third column shows the exact point along the road. The forth contains a description of the problems. On the fifth column you’ll find other comments.
It is important to notice that DNIT’s page only shows information on federal roads, ie, those maintained by the central government. Brazilian federal roads are identified with the letters BR. Although they are sometimes mentioned, the site does not cover conditions on state roads.