until his death in 1852, the list of works Smith was associated with, both in his official capacity as City Architect and private commissions, is lengthy; some examples are given below. Bridges Captain Samuel Brown designed the Wellington Suspension Bridge, which spanned the River Dee in Aberdeen at Craiglug; Smith competed against Simpson to win the contract to design the structures architectural sections. The bridge opened in May 1831 and featured arched granite pylons. Smith's contract also included building three miles of approach road and he designed/built the toll house at the north-east end of the bridge. Smith's design for the widening of the historic medieval Bridge of Dee in 1841 was described by Paxton and Shipway as "an exemplary widening of a historic bridge". In 1837, Smith designed the St Devenick's Bridge. It was also known as Morrison's Bridge after Reverend George Morrison who commissioned its design and paid for the construction; another name was the Shakkin' Briggie because it would shake whenever anyone walked over it. The bridge was long with a span of and followed the same style as the Wellington Suspension Bridge. Castles In 1814–1815 Smith was commissioned to design modifications to Brucklay Castle including remodelling the main entrance hall and frontage; this was in the neoclassical style. Work was also undertaken on the second and third storeys of the north elevation. Returning in 1820, Smith extended the old stable block in a mainly one and a half-storey Gothic style with a central pyramid roofed two-storey tower. That year he also began work on an extensive enlargement of Cluny Castle for Colonel John Gordon. Originally a Z-plan castle built c. 1604, the later extensions were described by architectural historian H. Gordon Slade as "the most shocking mis-use of architectural effort and granite in the north east of Scotland." Smith also worked on nearby Castle Fraser constructing an access stairway between the great hall on the first floor and the rear courtyard entrance. The two-storey building it was housed within had a glazed cupola at its centre under a lead roof. Two crow stepped gatehouses were constructed between an arched gateway entrance and various access passages joined the first floor wings. He was also responsible for the library design. Roof repairs carried out at Craigievar Castle were essential in the 1820s as the structure had fallen into decay. The owner, Sir John Forbes, had considered demolishing the