Road-safety reference

Bridges, parapets and water: a specific rural hazard

Where a road crosses a river on an old, narrow bridge, the margin for error is small. What the standards require.

This is a reference page. A fuller, fully-sourced version is being prepared as part of the road-safety library; the summary above states only what the published data supports. Being expanded

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Last updated 2026-08-05. This is a living record — findings are added as dated entries and prior versions remain visible.