Holborn Viaduct is a road bridge in London and the name of the street which crosses it (which forms part of the
A40 route). It links
Holborn, via
Holborn Circus, with Newgate Street, in the
City of London financial district, passing over Farringdon Street and the subterranean
River Fleet. The viaduct spans the steep-sided Holborn Hill and the River Fleet valley at a length of and wide. City surveyor
William Haywood was the architect and the engineer was
Rowland Mason Ordish.