Bridge four-lane highway on the upper level and a pair of railway tracks at the lower level. Tower Bridge in London is different example of a double-decked bridge, with the central section consisting of a low level bascule span and a high level footbridge. A viaduct is made up of multiple bridges connected into one longer structure. The longest and some of the highest bridges are viaducts, such as the Lake Pontchartrain Causeway and Millau Viaduct. A three-way bridge has three separate spans which meet near the center of the bridge. The bridge appears as a "T" or "Y" when viewed
Richmond Bridge, London Richmond Bridge, London Richmond Bridge is an 18th-century stone arch bridge that crosses the River Thames at Richmond, connecting the two halves of the present-day London Borough of Richmond upon Thames. It was designed by James Paine and Kenton Couse. The bridge, which is a Grade I listed, was built between 1774 and 1777, as a replacement for a ferry crossing which connected Richmond town centre on the east bank with its neighbouring district of East Twickenham to the west. Its construction was privately funded by a tontine scheme, for which tolls were charged until 1859. Because the river meanders