Prior to finalizing plans for Three Rivers Stadium, these three designs were considered in the 50's and 60's. Two concepts were released in 1958, one for a round multipurpose stadium on the north side and another for a stadium built on a platform in the Monongahela River. In 1963, a second concept for the north side was proposed for a stadium with an open end that looked over downtown Pittsburgh. This plan was abandoned due to cost issues. The simpler Three Rivers Stadium design was then built.

1958 Monongahela River Concepts

1958 North Side Concept

1963 North Side Concept

2012 Eric Okurowski