All this auxiliary structure and the other parts to be replaced were assembled in the three worksites located in the headboards of the bridge and transported to the replacement points with the help of three barges and several tugboats.
A metallic lattice positioned on these structures will be the supporting base for the bridge. The auxiliary structure is composed by four underwater supporting pillars that end in V-shaped steel structures. To allow the progress in changing worn parts, it was necessary to build an auxiliary structure to support the central span of the Hercílio Luz bridge, relieving this way the load currently supported by the sustaining towers and the eyebolt bars. The project had the technical consulting of American Bridge, American contractor that designed and built the original bridge. Tower cranes remove the old parts and lift and position the new parts that are bolted initially and riveted later. This service was carried out very quickly due to the use of four tower cranes that are working in that section. Traffic estimation is of 20 percent of the vehicles currently going through the two existing bridges that connect the Island of Santa Catarina to the continent: Colombo Salles and Pedro Ivo.Īll cross beams and spars that compose the central span lattice were already replaced. Once refurbished, the “iron lady” will come to operate again as part of the road system of the city. The total weight of the structure is 5,000 tons.īudgeted in R$ 262.9 million that will come from the government of Santa Catarina, from the municipality of Florianópolis and from the BNDES, the program of rebuilding foresees the change of large sections of the original structure of the bridge, including the 12 to 13 m long bars with eyebolts in their ends, hanging bars, structural bearings, tower saddles and deck of the hanging span, main towers, pedestrian catwalks and traffic lanes. Both towers are 75 meters above the sea level. The central span is 43 meters above the sea level.
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The bridge is formed by a central span with 339.471 meters, plus an insular viaduct with 259 meters and a continental viaduct with 221 meters, corresponding to a total of 819.471 meters. Such aggressions were worsened along the years with the increase of load due to the growing number of vehicles that were passing by, much higher than that foreseen in the original design. Since its opening, the bridge is suffering constant aggressions by the harsh environment where it is located, such as the corrosive action of the sea, which causes accumulation of saltpeter in several parts. According to a technical report issued by the Instituto de Pesquisas Tecnológicas (IPT), the reason was the deteriorating state of its metallic structures due to the lack of maintenance. From 1991 on, its access was also forbidden for pedestrians. Preserved and protected by institutes of defense of the historical assets of the Federal, State and City Government, the Bridge Hercilio Luz is interdicted for the traffic of vehicles since 1982. Works are scheduled to be concluded in 30 months counted from the start of this phase, occurred in April 18, 2016. After countless interruptions due to several reasons, the state government guarantees that the works-that now reached approximately 20 percent of physical advance-will not stop. Main monument and architectural symbol of the region, the metallic bridge-designed in 1922 and concluded in 1926-is passing by a long program of refurbishment that was going on through the last 11 years. The old “iron lady”, tender nickname given by the people of Santa Catarina to the Hercílio Luz Bridge, located in Florianópolis (SC), will soon be using new clothes. This structure will be used until the complete recovery of the original structure of the bridge The bridge will be supported by a temporary metallic structure assembled on underwater pillars built at a depth of 30 m.
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