Grant Shapps said: "We need to take every precaution."
The incident happened yesterday (May 19).
The museum also has projects on the go ready for when they can restart.
So far, 20 vehicles have been damaged.
Incident happened at A140/A143 roundabout near Scole
Appropriate diversion routes will be in place
Greater Anglia is advising passengers not to travel today
Figures lead to calls for an automatic driving ban
Full story and picture spread in tomorrow's Diss Express
Services from Eye to Stowmarket, Diss to Framlingham and Laxfield to Beccles under threat
One resident was especially lucky and offered a ride
Site is using generators as back-up
BT, Cadent, UK Power Networks all working on roads in the area with delays of up to 40 minutes
A reader speaks his mind