The first tunnel, a slightly smaller bore than the second, but originally two-way. Opened in 1963, made one-way when the second tunnel opened in 1980.
TQ5777 : A282 Dartford West Tunnel – north end
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The first tunnel, a slightly smaller bore than the second, but originally two-way. Opened in 1963, made one-way when the second tunnel opened in 1980.