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The government of Santa Fe in Argentina said it would spend nearly 2bn pesos (US$125mn) improving a highway linking the province's namesake capital to the port of Rosario.
Planned work along the 314km stretch includes paving and lighting to help ensure the highway can be used in all weather conditions.
Other elements include new access roads for the municipalities of Santo Tomé Norte, Fray Luis Beltrán and Desvío Arijón, and an extra lane for a section between Rosario and San Lorenzo.
The initiative is expected to take five years to complete.
The province, which will carry out the improvement work, is looking for a concessionaire to operate the highway under a five-year contract.
Bids for the concession contract are due to be opened on April 3, according to a state government release.