MINNEAPOLIS -- On the same day the NFL said it's moving forward with plans to play Monday night's Minnesota Vikings-Chicago Bears game at the University of Minnesota's outdoor stadium, a fourth roof panel collapsed at the Metrodome.

Three other roof panels collapsed early Sunday after a blizzard, forcing the league to find another home for the game. Repair work was halted on Thursday at the Metrodome because of unsafe conditions after the fourth roof panel collapsed Wednesday night under heavy snow and ice.

The league is now pushing ahead with the TCF Bank Stadium plan, despite concerns about the site ranging from field conditions to player safety.

The school's stadium wasn't designed to host a game this late in the year, and potential problems range from a rock-hard field that could be unsafe for players to frozen water pipes. The stadium is also smaller than the Metrodome, possibly leaving some ticket holders out of luck.

Crews are working almost around the clock to clear snow out of the University of Minnesota's open-air TCF Bank Stadium in time for Monday night. Hannah Foslien /Getty Images

"The game is going to be played there," NFL spokesman Greg Aiello said, according to the Chicago Tribune. "The decision has been made. If the situation changes and something unusual happens, we'll adjust. But there are no indications we wouldn't be able to play the game there. It's full steam ahead preparing the field and the stadium for a game on Monday."

Colts owner Jim Irsay said on Twitter that Lucas Oil Stadium in Indianapolis was available if needed. But NFL executive vice president Eric Grubman said that "100 percent of our focus is on getting this game played at the University of Minnesota."

Grubman was in Minneapolis to tour TCF Bank Stadium and to view the snow-damaged Metrodome.

"This is Minnesota -- you all know how to deal with cold," Grubman said. While he said there are particular concerns about the frozen field, "football is a cold-weather game."

The NFL Players Association will continue to monitor the issue, and "the health and safety of our players is paramount," director of communications Carl Francis said.

University officials have said they were looking into treating the field with warming chemicals, and that they planned to use a tarp over heating coils to soften the field before the game.