Loch Faskally, Clunie Bridge
Road Bridge (20th Century)
Site Name Loch Faskally, Clunie Bridge
Classification Road Bridge (20th Century)
Alternative Name(s) Cluny Bridge; Clunie Footbridge; River Garry; River Tummel
Canmore ID 163336
Site Number NN95NW 71
NGR NN 92785 58572
Datum OSGB36 - NGR
Permalink http://canmore.org.uk/site/163336
- Council Perth And Kinross
- Parish Moulin
- Former Region Tayside
- Former District Perth And Kinross
- Former County Perthshire
NN95NW 71 92785 58572
Location formerly entered as NN 9278 5853 to NN 9279 5862.
For adjacent Coronation Bridge, see NN95NW 106.
This bridge carries a footpath over Loch Faskally immediately W of Coronation Bridge (NN95NW 106). The available map evidence suggests that it extends from NN 92778 58523 to NN 92791 58614.
Information from RCAHMS (RJCM), 20 February 2006.
Construction (1950)
Unique in Scotland. Aluminium alloy trusses (AW10B alloy.) Arched in elevation, but functions as a cantilever beam bridge, double 'N' tusses braced at deck and arch soffits. Concrete piers.
R PAxton and J Shipway 2007
Project (2007)
This project was undertaken to input site information listed in 'Civil engineering heritage: Scotland - Lowlands and Borders' by R Paxton and J Shipway, 2007.
Publication Account (2007)
The creation of Loch Faskally by the construction of Pitlochry dam raised the water level of the Tummel by about 40 ft, submerging the two-span masonry arch Clunie Bridge. It was decided to replace it by a pedestrian bridge nearby.
The new bridge, erected in 1950, the only one of its kind in Scotland, is unusual in being built of aluminium alloy
trusses. It is 31012 ft long with a centre span of 17212 ft and two side spans of 69 ft and is designed for a live load of 84 lb sq. ft over a deck width of 612 ft. Although arched in elevation it functions as a cantilever beam bridge constructed of twin ‘N’ truss girders braced at the deck and arch soffits.
The material for the main members of the bridge is AW10B alloy. Little information on aluminium alloy riveting practice was available at the time of erection and this aspect required careful investigation. As aluminium has a very low modulus of elasticity compared to steel it might be thought that the slender design would be vulnerable to deflection effects or vibration, but this has not proved to be the case.
The consulting engineers were Sir Alexander Gibb & Partners and the contractors P. & W. McLennan Ltd, Glasgow. The aluminium alloys were supplied by James Booth & Co. Ltd. The concrete piers were constructed by Wm. Tawse, Aberdeen.
R Paxton and J Shipway
Reproduced from 'Civil Engineering heritage: Scotland - Lowlands and Borders' with kind permission of Thomas Telford Publishers.
