An diofar eadar na mùthaidhean a rinneadh air "Pont Grog y Borth"
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Loidhne 14:
Cha robh an rathad ach 24 troigh a leud agus gun cheanglaichean gus an rìghneachadh. Dh'fhàs e soilleir ann an ùine goirid nach robh an drochaid sàbhailte gu leòr nan robh gaoith làidir ann. Chaidh barr an rathaid a neartachadh ann an 1840 le W. A. Provis agus ann an 1893, chaidh barr fiodhach na drochaid ath-nuadhachadh le barr stàilinn dealbhaichte le Sir Benjamin Baker.<ref>{{cite web|url=http://www.asce.org/People-and-Projects/Projects/Landmarks/Menai-Suspension-Bridge/ |title=Menai Suspension Bridge |publisher=Asce.org |date= |accessdate=2014-05-19}}</ref> Thairis air na bliadhnaichean dh'fhàs e soilleir gun robh crìoch cuideam de 4.5 tunna na trioblaid mòr don gnìomhachas-giùlain a bha a sìor-fhàs. Ann an 1938 chuireadh slabhraidh [[stàilinn]] rithe an aite an seann fheadhainn à iarann <ref>''The Saturday Magazine'' (Deasaichte le J. W. Parker): td 212. 1835.</ref>gun a bhith a' dùnadh na drochaide.
Ann an 1999 chaidh an drochaid a dhùnadh fad mios gus barr an rathaid ath-nuadhachadh a-rithist agus na structaran a neartachadh, mar sin b' fheudar an trafaig a dhol thairis air an [[Britannia Bridge]] faisg air làimh.
On 28 February 2005 the bridge was promoted to [[UNESCO]] as a candidate [[World Heritage Site]]. On the same day one carriageway of the bridge was closed for six months restricting traffic to a single carriageway so that traffic travelled to the mainland in the morning and to Anglesey in the afternoon. The bridge was re-opened to traffic in both directions on 11 December 2005 after its first major re-painting in 65 years.
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