There are plans to improve the A47, one of last major roads in the East Midlands to only have one lane for most of its 150 miles. The project will begin with the road being converted into a dual carriageway at the junction of the A47 and A1.
Drivers on the route say it will speed up journeys, which will be better for business, and improve general safety.
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After a wet and windy start, rain will clear to the north to leave it dry, with easing winds but largely cloudy skies.
Early rain will clear northwards during the morning, allowing drier conditions behind.
Thousands of patients have had their operations and appointments cancelled despite a strike by junior doctors being called off.