Author(s): Carlos García, Olivia Müller and Lucas O’Connor

Abstract: Pothole formation is one of the most common and costly forms of distress affecting flexible pavements, particularly in regions experiencing moderate to heavy rainfall and inadequate drainage maintenance. Water infiltration into pavement layers weakens the subgrade, reduces load-bearing capacity, and accelerates surface failure under repeated traffic loading. While large-scale rehabilitation and advanced drainage systems are often recommended, they may not be economically feasible for low- and medium-traffic roads. This research evaluates the effectiveness of simple and low-cost drainage improvements in reducing pothole formation through a before-after case research approach. The investigation focuses on a selected flexible pavement stretch where minor drainage interventions—such as cleaning side drains, restoring cross slopes, sealing surface cracks, and providing localized outlets—were implemented without altering the pavement structure. Pavement condition surveys were conducted before and after the drainage improvements, with pothole density, severity, and spatial distribution used as key performance indicators. The findings demonstrate a substantial reduction in pothole occurrence and delayed progression of surface distress following improved drainage conditions. The results indicate that even modest drainage enhancements can significantly improve pavement performance by limiting moisture-related damage. This research highlights the importance of routine drainage maintenance as a preventive strategy rather than a corrective measure, especially in resource-constrained settings. The outcomes provide practical insights for pavement engineers and local road authorities seeking cost-effective solutions to enhance pavement durability and serviceability. The research concludes that prioritizing simple drainage improvements can yield measurable benefits in reducing pothole formation and extending the functional life of flexible pavements.

DOI: 10.22271/27078329.2026.v5.i1a.68

Pages: 37-40 | Views: 62 | Downloads: 28

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