<p>In Chile several natural hazards (earthquakes, landslides, etc.) create high road structure vulnerability resulting in road disruption. One of these conditions can be exemplified by the collapse of a road bridge resulting in high human and economic cost.</p><p>The current Bridge Management System must provide comprehensive inspection, diagnosis and intervention (strengthening or repair) protocols, always with a limited budget. For that reason, the budget allocated to O&M is usually reduced and has to be technically justified.</p><p>A tool to provide adequate decision-making is to know the direct and indirect costs associated with the collapse of the bridge and how this collapse impacts on the funding allocated to management activities.</p><p>This paper is a proposal based on the social assessment methodology to quantify the direct and indirect costs of a bridge collapse on a route that is critical for the Chilean road network, following the current social assessment methodology and applying it to a specific bridge. An analysis and comparison of the funding of inspection and monitoring is carried out. This analysis considers visual inspection, UAV, NDT and instrumentation of the bridge.</p>
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