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Colinton Bridge - widened in Ferro-Concrete for the Edinburgh City Council : Ferro-Concrete Review, Volume XV, Number 7,January 1924

The Ferro-Concrete Review was a monthly journal produced to publicise the Mouchel-Hennebique method of reinforced concrete construction 'in engineering and architetcural practice'. Edited by W Noble Twelvetrees it is a highly informative periodical full of details and illustrations of numerous contemporary construction projects. The Mouchel-Hennebique method was the result of the engineer L G Mouchel being the British agent for the Hennebique French/Belgian method of early concrete reinforcement patented by François Hennebique (1842-1921).

 

The reconstruction of road bridges is often commented on in the Journal, at a time when increasing demands on highway infrastructure in post-WW1 years met with the relatively 'new' technology of reinforced concrete. Whereas many of the bridge illustrated have long been swept away in later reocnstructions it is remarkable how many still stand, in regular use, a centrury after construction.

 

The January 1924 issued looks at a number of bridges in Scotland including this, the widening of the viaduct at Colinton that carries the B701 over the valley of the Water of Leith and what was the trackbed of the Caledonian Railway's Balerno Branch. As described the work consisted of the construction of ferro-concrete parapets on the existing masonry arched bridge. The road saw much use in the years before the Edinburgh City By-pass was opened, effectively acting as part of the ring road, and is still in use although I suspect the concrete elements have been more recently renewed.

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Uploaded on August 23, 2022