Who designed the first flyover? When and where was it built?
Holborn Viaduct was the world's first flyover, connecting Holborn with Newgate Street, avoiding a deep dip in the road. It was built across the Fleet Valley to get rid of the steep Holborn and Snow Hills. It was built between 1863 and 1869 and opened by Queen Victoria in 1869. Nearby is the City Thameslink station, a replacement for the former Holborn Terminus of the London, Chatham & Dover Railway It cost over two million
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