Tuesday, September 8, 2009

JUSCELINO KUBITSCHEK BRIDGE


The Juscelino Kubitschek Bridge, also known as the President JK Bridge or just the JK Bridge, crosses Lake Paranoa in Brasilia, D.F. It is named for Juscelino Kubitschek de Oliveira, former president of Brazil, who in the late 1950s decided to build Brasilia as the new capital of the country. It was designed by architect Alexandra Chan and structural engineer Mario Vila Verde.

BOX GIRDER BRIDGE


A box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport.