Four main tubes on the Caernarvon shore of the

1868 Illustration, showing construction of the four main tubes on the Caernarvon shore of the Britannia tubular bridge, over the Menai Straits. Begun by Stephenson in 1846, it was opened on 18 March 1850. Britannia tubular bridge, over the Menai Straits, into position

1846 Begun Caernarvon Menai Stephenson Straits Tubes Tubular

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