Westminster Bridge Under Construction from the South-East Abutment

Westminster Bridge Under Construction, dated 1747 and offering an extraordinary view from the south-east abutment, stands apart from the rest of Canaletto's English output as an image of active engineering rather than finished architecture. Westminster Bridge, designed by the Swiss engineer Charles Labelye, was London's second permanent crossing of the Thames — until it opened in 1750, London Bridge remained the only bridge in the city — and its construction was one of the great public works debates of Georgian London, fiercely resisted by the City of London Corporation and Thames watermen who feared competition. Canaletto arrived in England in 1746, as the construction was entering its final stages, and his decision to paint the unfinished structure rather than waiting for the completed bridge reflects either the novelty value of construction imagery or a commission from a patron involved with the project. The painting captures the timber centering, stone abutments, and scaffolding of eighteenth-century bridge construction with a precision that makes it a valuable document of engineering history, supplementing the written records of Labelye's project with unparalleled visual specificity.

Canaletto documents the construction with journalistic precision, rendering the scaffolding, stone piers, and temporary structures with meticulous detail. The composition balances engineering subject matter with atmospheric treatment of the Thames and London skyline beyond.