Marée Channel Bridge-Tunnel

The Marée Channel Bridge-Tunnel, officially the Marée Channel Bridge-Tunnel and Causeway System, is a 66.1 km crossing over the Marée Channel between the Cartadanian states of Maresia and São Ricardo. Connecting the cities of Aumiers and Lua, it forms the eastern portion of the larger Fortuna Expressway and more largely, IH-90.

Completed in 2014, the MCBT was the most expensive individual federal highway project in the country's history. It is part of a sea link complex crossing the state of São Ricardo, along with the Aluna Channel Bridge-Tunnel, which adjoins the Fortuna Expressway and connects São Ricardo to Alexandria.