1851 Great Exhibition: Official Catalogue: Class VII.: Edwin Clark
106. CLARK, EDWIN, 448 West Strand.
Model of the Britannia bridge, and of the apparatus used in floating and raising the tubes. Scale 1/8th of an inch to the foot. Engineer, Robert Stephenson; model executed for Charles Mare, Esq., by Mr. Jabez James.
[This bridge consists of a tube, formed of iron plates riveted together, and of sufficient dimensions to allow a loaded train to pass through each. It crosses the Menai Straits, and connects the Isle of Anglesey with South Wales. It was commenced August 10, 1847, and was finished March 5, 1850, and on the 18th of the same month was opened for traffic. The total expense of erection was £601,860, of which the iron work cost £443,160, and the masonry £158,700. It contains 1,500,000 cubic feet of masonry, 9,480 tons of wrought iron, and 1,988 tons of cast iron.— S. C.]