Strait of Messina Bridge have made the span more than 60% longer than the Akashi-Kaikyo Bridge in Japan—the largest suspension bridge in the world at . Plans called for four traffic lanes (two driving lanes and one emergency lane in each direction), two railway tracks and two pedestrian lanes. In order to provide a minimum vertical clearance for navigation of , the height of the two towers was to be . This would have been taller than the Millau Viaduct in France (currently the tallest bridge in the world at ). The bridge's suspension system would have relied on two pairs of steel cables,
Ouse Valley Viaduct other side of the viaduct. The project, which took more than three years, was completed during September 1999. Ouse Valley Viaduct The Ouse Valley Viaduct (also called Balcombe Viaduct) carries the London-Brighton Railway Line over the River Ouse in Sussex. It is located to the north of Haywards Heath and to the south of Balcombe. Known for its ornate design, the structure has been described as "probably the most elegant viaduct in Britain." Construction of the Ouse Valley Viaduct commenced by the London & Brighton Railway company during 1839. It was designed by the principal engineer for the line, John