SP: After filling a crater with concrete, the highway lane will be reopened this Thursday.
Mayor Ricardo Nunes assured that the concrete pouring was successful and there will be no need for retaining piles.
Brazil Agency - After an accident at the Line 6-Orange subway construction site, the central lane of Marginal Tietê, in the city of São Paulo, may be reopened this Thursday (3), at 17 pm. The information was confirmed by the São Paulo State Basic Sanitation Company (Sabesp), the State Secretariat of Metropolitan Transport and the city hall. There is still no forecast of when the local lane will be reopened.
“An on-site analysis demonstrated that the concrete work covering the opening caused by the accident next to the ventilation shaft of Metro Line 6-Orange and the rupture of the sewage pipe next to the construction site was successful. Therefore, it will not be necessary to install piles to contain the local lane of the Marginal Tietê highway,” Sabesp and the secretariat stated in a joint press release.
The accident at the construction site occurred on Tuesday morning (1st) and opened a crater on the Marginal Tietê, towards Rodovia Ayrton Senna, near the Freguesia do Ó bridge. The causes are still being investigated, but there is a possibility that the accident was caused by a leak in a pipeline — a channel for conducting water or sewage. There were no injuries, but some workers needed medical attention because they came into contact with contaminated water. The accident led to the isolation of the perimeter and the total closure of the local and central lanes of the Marginal.
To contain the crater, the concessionaire Acciona carried out a concreting work, filling the crater with rocky material and mortar. The service was completed last night (2). According to Sabesp and the secretariat, the opening was filled with 4 cubic meters (m³) of concrete, the equivalent of 650 concrete mixer trucks. In addition, 12 m³ of stones were dumped into the VSE Aquinos well, where the ventilation well of the future Line 6-Orange is located. This volume corresponds to 1,2 dump trucks.
Yesterday, in a press conference, the Secretary of Metropolitan Transportation, Paulo Galli, had informed that, if there was no need to place stakes to help contain the crater, the lane of the Marginal highway could be reopened within two or three days.
Today (3), Mayor Ricardo Nunes confirmed that there will be no need to place retaining piles, which would increase the timeframe for opening the runway. “The concrete work effectively contained the issue of earth movement. The sensors that the company Acciona maintains there on the runway did not identify any changes. Therefore, we have this important information [about opening the runway],” said the mayor.
Nunes highlighted the pressures faced due to increased traffic in the region. "There are five bus lines that pass through the area and transport approximately 40 passengers per day," said the mayor. Barriers will be installed on the local lane of the Marginal Tietê highway to preserve the area, allow for cleaning, and prevent drivers' curiosity about the teams' work from causing traffic slowdowns.
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