 Leaving the junction of the West Cross Route and SCR heading south-west, the Balham Loop would have passed over the railway land at Clapham Junction station before heading south to cross the A3 at Battersea Rise then run parallel with the railway across Wandsworth Common to cross Nightingale Lane (B229) and past Wandsworth Common station.It is not certain which side of the railway the motorway would have run but the south side of the railway through Balham is likely to have offered the road planners the easier route.At Tooting Common the Balham Loop would have had a Y-shaped junction with the end of the M23 motorway coming north from Streatham Vale and would then have continued through Streatham Hill, over the A23 and then would have cut through a residential area to reach the triangular railway junction south of Tulse Hill station.