what makes you say that?
1) It's on SKY
2) Birmingham to Blackburn is practically all motorway, M42/M5 (from the south), M6, M65. Ewood Park is 1km from junction 4 of the M65. No-one should have any problems.
3) We knew about the weather for ages, the ground staff will have been working consistently to keep the public areas of the ground ice free.
I'm driving fom Derby at 4 and even that is only 5 roads. A38S. A50, A500, M6, M65 - all main roads with more than one lane of traffic. No-one should have a problem. Not least the fact that snow is only expected until around noon in Blackburn.