BRIDGE OVER THE RIO DAS VELHAS

BR-381 HIGHWAY – BELO HORIZONTE/SABARÁ (MG)

CHALLENGE The structure of one of the foundations was compromised by significant settling, causing deformities in the superstructure so that recuperation was not feasible. The bridge sank. Since the road was closed there were few alternatives for a detour on one of the main highways of Minas Gerais, with intense heavy load traffic, in addition to tourists traveling to and from the coast.
SOLUTION Due to the extremely poor condition of the structure, uncertainty regarding the remaining foundations and the objective of re-establishing traffic on the road as soon as possible, the only solution was the total demolition of the bridge. There was no design or timetable available. First, we built a metallic bridge for vehicles with reduced loads and speed. The design prioritized rapid execution solutions. The foundations with mechanized piles were embedded in the rock and a mixed superstructure – metallic girders and pre-cast concrete slabs. That allowed the work to be concluded and traffic restored 30 days in advance.

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