Sir John Macneill of Mount Pleasant Dundalk Sir

Sir John Macneill Architect and Engineer

Sir John Macneill of Mount Pleasant Engineer, Inventor and Architect

Early life • 1793: Born 5 th May • 1811: Commissioned in Louth Militia

Working as an engineer • 1816: Started work on roads, bridges, drainage and surveying

The early 1820’s • 1822: Map of the Lower Barony- scale 8 inches to

Move to England • 1826 Did a survey of the River Boyne at Drogheda

England, Scotland Ireland 1831 -1840 • Evidence to Select Committee on Holyhead and Liverpool

England, Scotland Ireland 1831 -1840 • In 1833 and 1834 he made Canal boat

Dublin and Drogheda Railway • 1836 Thomas Brodigan of Pilton House

Sir John as architect • • • Mount Pleasant Flax Works Portadown Station Carlow

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Sir John Macneill of Mount Pleasant Dundalk

Sir John Macneill Architect and Engineer

Sir John Macneill of Mount Pleasant Engineer, Inventor and Architect

Sir John Macneill

Early life • 1793: Born 5 th May • 1811: Commissioned in Louth Militia 29 th April • 1816 : Militia disbanded

Working as an engineer • 1816: Started work on roads, bridges, drainage and surveying in Dundalk area • 1819: February 22 nd Iron Road Roller nearly ready • 1819: March, Road roller working well • 1820: Bridges-stone or iron?

The early 1820’s • 1822: Map of the Lower Barony- scale 8 inches to the mile • 1822 c Married Isabella Mercer • “never was qualified or adapted either for Mercantile or farming business” • 1823: Lithography • 1823: December-Writes to Foster from Galway where he is working for Nimmo

Move to England • 1826 Did a survey of the River Boyne at Drogheda for Nimmo. • 1826 Joined Thomas Telford in December • 1827 Elected an associate of the Institution of Civil Engineers, proposed by Telford, Cubitt and Farmer • 1828 Development of Pirameter

London-Holyhead Road

London -Holyhead Road

England, Scotland Ireland 1831 -1840 • Evidence to Select Committee on Holyhead and Liverpool Road • Evidence to Select Committee on Steam Carriages • Sir Henry Parnell’s Treatise on Roads • Tables on Earthwork Calculations published

Highgate Archway Road

Highgate Tunnel

Steam Omnibus

Earthwork Tables

Instrument for lines of slope

England, Scotland Ireland 1831 -1840 • In 1833 and 1834 he made Canal boat experiments in Scotland • Telford died in 1834 and left Macneill £ 400 and his notebook • Macneill’s son Telford was born in the same year.

Slammannan Bridge

Cork and Cove Railway(1837)

Proposed Route

Actual route(1859 -1862)

Dublin and Drogheda Railway • 1836 Thomas Brodigan of Pilton House

Iron Lattice Bridge

Malahide Timber Vidauct

The Boyne Viaduct

Viaduct Test

Boyne Viaduct