Rehabilitation of the Outeiro Bridge with emergency strengthening of the superstructure damaged by barges impact

The collapse of one of the supports of the central section of the bridge compromised the overall stability of the deck, leading to the immediate shutdown of its operation on January 16, 2022. Therefore, the occurrence of the collapse of the AP4 support after 37 years of operation led to the immediate isolation of the population of Outeiro Island, which today has 80,000 inhabitants, who use the bridge daily, with a volume of motor vehicles in the order of 4,500 per day. Therefore, as a premise, both the emergency strengthening and retrofitting of the Outeiro I Bridge were carried out with the partial operation. Considered an urban bridge over the Maguary Canal where there are large shipyards and docking ports for barges convoy that transit on the Belém-Manaus waterway route, the solution considered the duplication of the navigation channel with the construction of the cable-stayed bridge on the central section, making it safe for both heavy vehicle traffic and navigation with 2 navigation channels with a width of 80m and 100m and 12m height.