Riot Fest became a mud fest this year.
Just how much damage was done to Humboldt Park, home of the three-day music festival, still was being assessed Monday, according to the Chicago Park District.
But one thing was certain: It was difficult for concertgoers to avoid getting mud caked onto their shoes and boots after Friday's rain that helped transform the park into a sloppy mud pit through Sunday.
The fest site will remain closed to the public until at least Thursday, when officials will walk through the park to determine the extent of the damage and create a plan for repairs, said park district spokeswoman Jessica Maxey-Faulkner.
Riot Fest organizers are responsible for repairing any damage done to the site, Maxey-Faulkner said. A representative of the music festival couldn't be reached for comment Monday.
Last year, the cost estimate was pegged at $54,300, thanks in part to higher attendance and rain on the fest's last day. Final attendance records for 2013 weren't available.
This year, the fest's footprint was twice the size it was in 2013. The fest moved to the north section of the park roughly bordered by North Avenue to Division Street and California to Kedzie Avenues.
The Tribune estimated 160,000 fans attended this year's fest over the weekend.
In August, officials estimated it would cost $266,000 to repair parts of the 115 acres of Grant Park where Lollapalooza took place. On Monday, upper and lower Hutchinson Fields remained fenced off for fixes, as they have been for more than a month.
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