Reference · road & bridge standards

Bridge Load Ratings (BD 21/01)

This standard outlines the methodology for assessing the load-carrying capacity of highway bridges and structures.

BD 21/01 provides guidance on determining the maximum permissible vehicle loads that a bridge can safely carry. It considers various factors including the bridge's structural form, material properties, and condition, ensuring public safety and efficient transport. The assessment results in a load rating, often expressed as a percentage of standard vehicle loads.

Source: DMRB BD 21/01

A reference page explaining a published road or bridge standard. It states the standard only; it makes no claim about any particular location.

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