Sonning Bridge has been closed again due to more local flooding.
Rush hour motorists are being warned of long delays as water levels on the River Thames continues to rise.
The B478 from Playhatch Road to Sonning Bridge has been closed in both directions between the Henley Road junction and High Street in the village.
Other routes for motorists include using Caversham Bridge and Reading Bridge crossings over the Thames although these routes are expected to be busy.
Heavy congestion both in and out the town at Cemetery Junction in Newtown is also expected to be bad.