Norwood Road southbound, from Tulse Hill station to Elmcourt Road, will be closed from the evening of Monday 12th June till 30th July. 

This closure is for Thames Water to complete its work to reline the water mains for our local area. Southbound traffic from Brixton & Herne Hill will enter West Norwood via Lancaster Avenue. Southbound buses from Herne Hill (196, 322, 468, 690 & N68) will diverted along Croxted Road to Thurlow Park Road to turn into Lancaster Avenue.

https://westnorwood.wordpress.com/2017/06/04/norwood-road-closure/