PITTSBURGH — Parking lots at Heinz Field will open only four hours before Kenny Chesney’s concert on Saturday, in hopes fans won’t engage in rowdy behavior and leave behind tons of trash like they did after his 2013 show at the stadium.

The lots will open at 1 p.m. for the show which begins at 5 p.m. and also features Eric Church and other supporting acts.

Crews cleaned up more than 45,000 pounds of garbage, some of it containing human waste, after the 2013 Chesney concert when lots opened at 10 a.m.