Motorists in North Yorkshire received some early Christmas cheer from Chancellor George Osborne, who gave an A1 upgrade the go-ahead.
Mr Osborne reversed his 2010 decision to axe the upgrade of the A1 by confirming the £312m project in his Autumn Statement.
Labour have accused Mr Osborne of “the ultimate U-turn” after he dropped the project just two years before.
The upgrade will complete the motorway between Leeds and Newcastle after years of delay.
The upgrade of the A1 between Leeming and Scotch Corner, finally bringing it up to motorway standards, was hailed as a major success by local campaigners who have seen the road closed by flooding over recent months.
North Yorkshire County Council leader John Weighell said: “The council has been lobbying for these essential improvements to this major strategic highway.
“We believe the upgrade is key to the economic prosperity of North Yorkshire and the closure of the road during the floods of this year has underlined the importance of major improvements. It is extremely gratifying that the Government has now responded with this announcement.”