The towpath between Barnes Bridge and riverside Jubilee Gardens in Mortlake is likely to remain closed until early October.
The work by the Environment Agency , which began last month, involves strengthening flood defences.
The diversion means that walkers approaching Barnes Bridge must go under the road arch. Beyond the bridge there is only a pavement on the left hand side side of the road.
On entering Mortlake it is at present possible to go along the waterfront at the Ye White Hart but there is then an immediate return to the road.
Beyond the pub walk on the right hand side of Mortlake High Street to continue past Tideway Yard (with Rick Stein’s restaurant). Just past Jubilee Gardens (opposite Avondale Road; left) go right down a narrow passage to return to the river.