'We will deliver' the £300m A47 upgrade, Ed Balls has said.
The Shadow chancellor said he would not 'renege 'on the government promise, and he wanted to 'dig some holes'.
He said: 'Every time George Osborne has announced his road infrastructure plans, I have supported them.
'When he announced them the first time, I supported them. When he re-announced them for the second time, I supported them, and now he has announced them for the third time, I am supporting them.
'I am not going to renege on that. I am hoping not to re-announce them. I am going to do them rather than just announce them.'
He backed the blueprint for the A47 upgrade this week.
He added: 'Don't worry. We will deliver.'
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