The sale to a subsidiary of HICL Infrastructure Company Limited for £22m represents a profit of £11m.
Balfour Beatty Chief Executive, Andrew McNaughton, said: “It is pleasing to see that our strategy of regular asset disposals to release some of the accumulated value in our portfolio continues to deliver additional income and cash to the Group.
“With the completion of the Salford Hospital sale, we have achieved £80.5 million of proceeds and £44.9 million of gains on PFI disposals so far this year.”