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The government of Brazilian state Paraná has called bids for 2.3bn reais (US$742mn) in highway maintenance contracts.
The three-year initiative is the largest of its kind in Paraná's history, state authorities said in a statement.
The tender is split into two, multi-lot parts.
Part one, which involves 15 lots, entails carrying out work over 4,189km of state highway under Paraná's road improvement and paving program Cremep. The other, which involves 18 lots, calls for improvement work over 6,000km of highway under the state's road maintenance program COP.
Most of the work – or 10 lots – will be carried out in the northeast of the state. It will involve improving 3,190km of highway and require 750mn reais, the release said.
Interested companies must submit proposals by April 19. Contracts will be awarded to the lowest bidders. Winning contractors should be announced by September and initial work could start by the end of the year.