The road will be three lanes in the vicinity - two approaching the roundabout, one leading away.
There were plans a few years ago (before the Comprehensive Spending Review), to replace the roundabout with a traffic light controlled signalised junction. But the CSR cancelled those (very expensive) plans, and Sunderland council couldn't afford the scheme themselves.
RE: Sunderland Area Developments - St Mary's Way, Vaux, New Wear Bridge etc