Life-Cycle Cost Modelling of Access Roads to South Sudan Oil Fields Under Extreme Climatic Conditions

March 18, 2026Open Access

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Key Points

The aim is to develop a life-cycle cost framework for access roads to South Sudan's oil fields, considering extreme climatic conditions.
Develop a life-cycle cost framework integrating NPV, HDM-4 modelling, and VOC estimation.
Conduct pavement condition surveys across five distinct oil logistics corridors totaling 1,865 km.
Evaluate seven maintenance strategy alternatives over a 30-year period with varying climate scenarios and traffic trajectories.
The minimum life-cycle cost strategy results in a 30-year NPV savings of USD 690,000–1,040,000 per kilometer compared to the do-nothing baseline.
Pavement conditions indicated that two of five routes exceed acceptable roughness thresholds.
Sensitivity analysis shows that traffic growth rate, discount rate, and initial construction cost are most impactful, accounting for 38.7% of NPV variance.

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Evaluates life-cycle costs of access roads in South Sudan, highlighting economic impacts under climate change.

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Aduot Madit Anhiem (2026) studied this question.

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