Sonning Backwater Bridges are two road bridges across two branches of the
River Thames at
Sonning Eye,
Oxfordshire,
England. Built in 1986 to replace an older wooden structure, the bridges span Sonning Backwater and the
millrace to link historic brick arch
Sonning Bridge of 1775, which spans the boundary with
Berkshire to connect the village of
Sonning, with the smaller hamlet of Sonning Eye. Just upstream along the backwater is a
weir next to
Sonning Lock on the main navigable branch of the river.