Sunk pier and arches of Westminster Bridge, London, 1748.

Engraving by Parr after an original drawing by William Halfpenny showing a sectioned perspective view of the structure of part of Westminster Bridge. The text outlines proposals by Halfpenny, an achitect, for repairing the arches, which had suffered damage. Westminster Bridge was built in 1738-1750 by the engineer Charles Labelye following the 1722 design of Colon Campbell. The bridge deteriorated and consequently a cast-iron bridge of seven arches was designed and built in the same location by Thomas Page in 1854-1862.