Renegociação de contratos de concessão: o caso da concessão da BR-163/MT (Rota do Oeste)

The article explores the notion of renegotiating concession contracts through a case study of the BR-163/MT concession, managed by Concessionária Rota do Oeste (CRO). After outlining the most prominent features of concession contracts, the article analyzes, differentiates, and brings together the concepts of mutability, negotiation, economic-financial rebalancing, and renegotiation, highlighting the risks and potential advantages of the latter. Finally, it reports and analyzes the renegotiation of CRO's contract based on the processes that took place at the National Agency for Land Transport (ANTT) and the Federal Court of Accounts, aiming to extract the concerns and legal contours that made the contract alteration possible.