The National University of Misiones was established at Posadas in 1973, and in 1990, the city's cultural and economic links to Encarnación were strengthened with the completion of the San Roque González de Santa Cruz Bridge.
The bridge was first projected in 1977 through an agreement between the governments of Argentina and Paraguay, as a compensation to Paraguay for the flooding of part of its territory by the Yacyretá Dam.
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