The Royal Society of Edinburgh

Telford 250th Anniversary Conference 2007

TELFORD’S IRON BRIDGE MASTERY

By Professor Roland Paxton FICE, FRSE TYPICAL HEAVY 18th CENTURY CANAL AQUEDUCT – KIRKINTILLOCH 1774 THE FIRST IRON AQUEDUCT DESIGN – PONTCYSYLLTE – TELFORD 1794 LONGDON-ON-TERN AQUEDUCT – TELFORD/REYNOLDS 1795-96 LONGDON-ON-TERN AQUEDUCT – TELFORD’S FLAT ARCH CONCEPT Longdon-on-Tern Aqueduct - Section through trough PONTCYSYLLTE AQUEDUCT 1796-1805 – TELFORD’S AS BUILT DRAWING PONTCYSYLLTE AQUEDUCT

ICE SPECIAL MINUTES OF PROCEEDINGS MAY 2007 - COVER LANGHOLM BRIDGE c.1778 – TELFORD STONEMASONRY ROMAN ARCH BRIDGES – FROM TELFORD’S ‘BRIDGE’ TREATISE 1812-30 BLACKFRIARS BRIDGE, LONDON – STATE-OF-THE-ART PRACTICE 1760-70 THE FIRST MAJOR IRON BRIDGE – , COALBROOKDALE 1779-1781 SLENDER ARCH DEVELOPMENT AT BUILDWAS – TELFORD/REYNOLDS 1796 EARLIER TIMBER BRIDGE INFLUENCE – ‘SCHAFFENHAUSEN’ PRINCIPLE EARLIER TIMBER BRIDGE INFLUENCE – PALLADIAN ARCH 16th CENTURY TELFORD & DOUGLASS’S BOLD 600 FT SPAN LONDON BRIDGE PROPOSAL 1800 LONDON IRON BRIDGE PROPOSAL – 1801 REVISION IRON BRIDGE DEVELOPMENT 1802-11 - TELFORD/HAZLEDINE 1811-12 THE GENRE PROMOTED IN FRANCE – BARON DUPIN 1818-30 THE GENRE AS PROMOTED BY TELFORD FROM 1812 THE SECOND ‘STANDARD’ LIGHT-WEIGHT ARCH - CRAIGELLACHIE, 1814 – APRIL 2007 MULTI-SPAN BRIDGE OF 150FT & 105FT STANDARD MODULES 1822-1916 WATERLOO BRIDGE BETWS-Y-COED 1815, NOW EATON HALL ESTATE BRIDGE NEAR CHESTER 1814, NOW MYTHE BRIDGE, 1826, NOW LATTICE SPANDREL INFLUENCE – WATER STREET MANCHESTER 1848 LATTICE SPANDREL INFLUENCE – CARRON, SPEYSIDE, 1863 IRON STAY SUSPENSION PROPOSAL – TELFORD 1811 RUNCORN SUSPENSION BRIDGE PROPOSAL – TELFORD 1814 THE FIRST IRON WIRE BRIDGE – TELFORD’S RUNCORN MODEL 1814 RUNCORN MODEL – SKETCH ELEVATION AT SUPPORT UNION CHAIN-BAR BRIDGE, PAXTON – CAPT. S. BROWN/RENNIE 1820 MENAI BRIDGE – TELFORD 1818-26 – VIEW 1906 MENAI BRIDGE CHAIN LINK DETAIL MENAI BRIDGE BAR PROVING MACHINE MENAI BRIDGE – ANGLESEY ANCHORAGE MENAI BRIDGE – ERECTING A CHAIN

MENAI BRIDGE – ERECTING A CHAIN MENAI BRIDGE – ERECTING A CHAIN

MENAI BRIDGE NOW