Carillion believes it has secured about £1.7bn of work in little over three months.
The Wolverhampton-based contractor told the City it had lined up a series of contract wins, preferred bidder positions and framework slots since 30 June 2015.
These include the £292M deal to widen the A14 from Swavesey to Milton in Cambridgeshire – which Carillion will deliver in joint venture with Balfour Beatty.
Carillion chief executive Richard Howson said: “As we expected, the pace of work winning in the second half of the year has started to pick up.
“Since the half year, we have secured contracts, preferred bidder positions and framework agreements that are expected to be worth around £1.7bn.
“With cash flow remaining healthy and these recent contract successes, we remain confident of achieving this year’s targets, including ending the year with strong revenue visibility for 2016.”