Mile High Stadium was built in 1948 in Denver, Colorado, originally as Bears Stadium for the Denver Bears baseball team.

Quick facts

  • Original name: Bears Stadium, renamed Mile High Stadium in 1968.
  • Location: Denver, Colorado, on a former landfill site west of downtown.
  • Opened: 1948, with an initial capacity of about 17,000–18,000 seats.
  • Later role: Expanded over the years to host the Denver Broncos and other teams, eventually becoming one of the NFL’s most iconic home fields.

Old vs. new “Mile High”

There is also a newer stadium, Empower Field at Mile High (often just called “Mile High” today), which is a separate facility:

  • Construction period (new stadium): 1999–2001.
  • Opened: August 11, 2001.

So if the question is “when was Mile High Stadium built?” and it refers to the original, historic Mile High Stadium, the answer is 1948.

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