Even in 2006 , when the debt was repaid , this did not include the planned replacement of the current roof which is considered to be unstable , .
Why the stadium is closed during the winter months due to fear of the weight of snow causing another collapse .
Even in 2006 , when the debt was repaid , this did not include the planned replacement of the current roof which is considered to be unstable , hence why the stadium is closed during the winter months due to fear of the weight of snow causing another collapse .