The one way system outside West Norwood Library SE27 9JX is closed for about a week so Thames Water can fix a burst water main.
Southbound traffic traffic along Norwood High Street will be forced to use other local routes.
Southbound bus routes are affected. The southbound 68 bus terminates at Tulse Hill station stop and the northbound 68 is not picking up from the Perran Road stop.
The 2, 196, 432 and 468 southbound are diverting along Christchurch Rd to Streatham High Road, Leigham Court Road and then to Crown Point before continuing their onward journey. The 2 returns to West Norwood via Elder Road .
The West Norwood bound 315 diverts along Leigham Court Rd to Crown Point and down Knights Hill.
Apart from the 68, northbound buses are using their normal route.