Thursday, July 16, 2015 - 18:53

First curved cable-stayed bridge in Brazil is unveiled in Laguna

The third largest bridge in Brazil, the project has transformed the south of the country, generating jobs, fostering development and introducing innovative construction techniques

ponte-laguna-3-noiteAt the peak of construction, approximately 1,800 professionals were working on the project

The first curved cable-stayed bridge suspended by a single stayed plane in Brazil, the Anita Garibaldi Bridge (Laguna Bridge), is being unveiled today, July 15, 2015. Located in Laguna, state of Santa Catarina, the construction is 2.8 kms long (the cable-stayed stretch is 400 meters while there is a further stretch of 2.4 kms supported on pillars) and approximately 25 meters wide. The bridge has been built by a consortium led by Construtora Camargo Corrêa spanning the Laranjeiras Channel. It is expected to have an extremely positive impact on the BR-101 highway, one of the country’s main arteries and a route linking Mercosur countries.

Bridge assembly involved the use of innovative construction techniques such as the introduction of a lifting gantry (manufactured by BERD), imported from Portugal. This equipment has allowed each bridge span to be erected in just four days rather than a week using traditional methods. The gantry has a capacity to lift a 48-meter long span, weighing about 1,211 tons, or the equivalent of 1,279 cars of the Volkswagen Gol G6 type. Using the conventional system (already available in Brazil), it would have needed 10 equipment units to do the job in the same time as the BERD. The Laguna Bridge will alleviate heavy traffic in the region, facilitate the flow of freight between the southern states and the central region of Brazil as well as serving to improve the commercial integration of the countries in the Mercosur bloc.

Started in 2012, work reached a peak in two years with about 1,800 professionals on site. The total area of the construction yard was approximately 96 thousand m², including a reserve area of 11,793 m² and a further three auxiliary areas. A cement plant was built at the site, operating round the clock. In addition, the site included a pre-cast sections manufacturing yard, marine access facilities, accommodation, support areas, water and effluent treatment plants, canteen facilities and other services of a support nature. Construction planning also incorporated the necessity of dredging the channel since the Laguna lagoon had insufficient depth for navigation.

"We have a highly engaged team which completed the project with a high degree of management excellence, much responsibility and endeavor", declares Luís Gustavo de Oliveira Zanin, manager for the project, which for the second year running won Construtora Camargo Corrêa’s “Obra Padrão” award of the Year. This award is in its fifth year and is an important manifestation for recognizing committed professionals and projects, which practice the company’s credos and values.

Check other of the Laguna Bridge’s achievements:

  • Chico Mendes Institute´s Green Seal
  • The Padrão Award’s “Obra Padrão” for 2014 and 2015
  • Quality Management System (ISO 9001:2008 and PBQP-H)
  • Occupational Safety and Health Management System (OHSAS 18001:2007)
  • Environmental Management System (ISO 14001:2004)
  • Social Responsibility System (NBR 16001:2012)

Technical specifications - Laguna Bridge (Anita Garibaldi Bridge)

  • Length: Total length of the bridge is 2,830 meters, including 3 cable stayed spans, the principal span being of 200 meters and a further two secondary spans of 100 meters each
  • The bridge consists of a divided highway, one heading south and the other north
  • Each track consists of two lanes 3.6 meters wide together with a soft shoulder of 3 meters + a central reservation of 1.10 meters
  • Size of the works site: the total yard area is about 96 thousand m², including a reserve area of 11,793 m² and a further three auxiliary areas
  • Client: the National Transportation and Infrastructure Department (DNIT)
  • Construction: Laguna Bridge Consortium: Construtora Camargo Corrêa/ Aterpa M. Martins and Construbase
  • Principal equipment: a BERD span section lifting gantry, manufactured in Portugal
  • Steel: 20 thousand tons
  • Concrete: 100 thousand m³
  • Workforce numbers: 1800