The Orwell Bridge in Suffolk is likely to close tonight as strong winds prepare to batter the region.
Highways England says, based on current predictions, the crossing will shut from 10pm tonight (Wednesday) until 8am tomorrow (Thursday).
A diversion will take traffic via the A1156, A1189 and A1214 through Ipswich.
A spokesman said: "Drivers should be aware of sudden gusts of wind, and give high-sided vehicles, caravans, motorbikes and bicycles plenty of space."
Scattered wintry showers across East Anglia will become confined to Norfolk by the morning. Long clear spells developing.
Ice will again form on some surfaces from late Wednesday afternoon, which will continue through the night and well into Thursday morning.
The Anglia region has experienced the relatively unusual phenomenon of snow during a thunderstorm as temperatures dipped below -4°C