   the houghton highway is a  reinforced concrete viaduct, shortening the road distance between the cities of redcliffe and brisbane in queensland, australia. the bridge, along with its duplicate, the ted smout memorial bridge, are the longest bridges in the country. almost immediately after opening it faced a greater capacity task than originally intended, and in later years became a contentious issue politically with concerns about its ability to meet growing traffic demands, refusal to build another bridge, and the lowering of its speed limit. ==history== with rising traffic levels on the two-lane hornibrook bridge in the 1970s, the department of main roads investigated the construction of another structure to increase capacity and cope with future demand. authorisation by the department was given to construct a new bridge in 1977, and the new houghton highway opened on 20 december 1979, by the then premier of queensland, the hon sir joh bjelke-petersen. th
Bridges_completed_in_1979 Bridges_in_Brisbane Concrete_bridges_in_Australia Highways_in_Queensland Road_bridges_in_Australia Viaducts_in_Australia