The Superdome (now Caesars Superdome) was constructed between 1971 and 1975 and officially opened in August 1975.

Key dates

  • Planning and design for the Superdome began in the late 1960s, with formal plans drawn up around 1967.
  • Actual construction started in August 1971 in downtown New Orleans.
  • The stadium was completed and opened to the public as the Louisiana Superdome in August 1975.

Quick Scoop

  • If you are asking “when was the Superdome built,” most sources treat its construction period as 1971–1975, with 1975 as the key “built/opened” year.
  • It was conceived as a massive multi-purpose indoor venue to attract major sports and entertainment events to New Orleans.

TL;DR: The Superdome was built from 1971 to 1975 and opened in August 1975.

Information gathered from public forums or data available on the internet and portrayed here.