San Francisco 49ers quarterback Nick Mullens (1) throws under pressure against Los Angeles Chargers Whitney Richardson (65) in the third quarter of their NFL game at Levi Stadium in Santa Clara, Calif., on Thursday, August 31, 2017. Heinz Field broke ground in June of 1999 and opened in August 2001 at a cost of $281 million dollars, this was part of the total plan that totaled $809 million dollars to build a stadium for the Pittsburgh Pirates (PNC Park) and…