The Rodoanel Norte is the fourth part of the Rodoanel Mario Covas around São Paulo and the last one to be completed. The 177 km long road, which is also known as São Paulo Metropolitan Ring Road, will relieve the city from very high through traffic of approx. 300,000 vehicles per day.
The Rodoanel Norte connects São Paulo, Guarulhos and Arujá. This northern section of the ring road has between three and four lanes in each direction.
Seven tunnels as well as 114 bridges and viaducts
The project was divided into six lots and includes the construction of seven tunnels as well as 114 bridges and viaducts.
The OAS Company was awarded the contract for construction of Lots 2 and 3. In Lot 2, OAS built a bridge that is connected to a tunnel. The bridge that crosses a valley consists of two separate bridge structures, the precast segments of which were produced in a field factory directly on site. 30 bonded strand tendons were installed into the precast concrete segments of both structures (15 per segment).
Fast completion of the bridge
Thanks to the excellent cooperation of all parties involved, the first bridge structure was successfully completed in only six months and the second structure in only 4.5 months.
DSI Prepron carried out the stressing and grouting of all tendons on site using equipment developed by the company. Minimum tolerances were applied during tendon stressing in order to ensure the high quality of the precast beams.
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