 At its eastern end, Ringway 2 was planned to have crossed the River Thames at Gallions Reach in a new tunnel between Beckton and Thamesmead.Although this tunnel was never built, the utility of an additional river crossing in this area continued to be recognised during the decades after the Ringway Scheme's cancellation and various proposals for an ""East London River Crossing"" have been developed, the most recent of which was the Thames Gateway Bridge, cancelled in 2008.The South Circular Road was in the 1960s, and remains still, little more than an arbitrary route through the southern half of the city following roads that are mainly just single carriageway.