After nearly three years of usage that included a Super Bowl, monster truck rallies and mega concerts, U.S. Bank Stadium’s turf is kaput.

The Minnesota Sports Facilities Authority (MSFA) last month formally requested proposals from companies to install some 100,000 square feet of new turf to replace the greenery now in place at the 2½-year-old downtown Minneapolis stadium, at a cost of at least $1 million.

When the current turf was laid down in 2016, then-MSFA Executive Director Michele Kelm-Helgen told the Finance & Commerce business journal that its life cycle was eight to 10 years and that it came with an eight-year warranty.

However, Vikings Vice President Lester Bagley said Wednesday that the turf replacement is part of routine maintenance necessitated by the “wear and tear caused by heavier useto be played at the stadium April 6-8.

After the curtains and turf are paid for, the stadium’s capital reserve fund will have about $6 million left, MSFA spokeswoman Jenn Hathaway said.

How other fields fare

U.S. Bank Stadium’s current turf came from Ontario-based UBU Sports synthetic turf system, one of a handful of major players in the industry. The Vikings use the same turf at their Eagan practice facility.

MetLife Stadium in East Rutherford, N.J., home to two NFL teams — the New York Giants and New York Jets — has the same UBU Speed Series S5-M turf as U.S. Bank, and has replaced its turf twice since opening in 2010, once in 2013 and again in 2016.

CenturyLink Field in Seattle, shared by the NFL’s Seahawks and the Sounders soccer team,