A ban on vehicles over 7.5 tonnes using the M48 Severn Crossing came into force on Tuesday, 27 May, in a bid to prevent further damage to the structure.
Recent safety inspections revealed deterioration in the bridge’s supporting cables, prompting the introduction of new weight restrictions. As a result, all heavy goods vehicles (HGVs) must now use the Prince of Wales Bridge for cross-border journeys between England and Wales.
The M48 will remain partially open, with two lanes available for lighter vehicles. This arrangement aims to ease the strain on the cables while keeping the crossing operational for most traffic.
The restriction on HGVs is expected to remain in place for 12 to 18 months, depending on further assessments and the implementation of a medium-term solution by National Highways. The proposed system will enable real-time monitoring and control of vehicles exceeding the 7.5-tonne limit.
Chris Pope from National Highways says the ban is only temporary
National Highways says the measure is necessary to maintain the safety and longevity of the bridge.
In 2024, just over 10% of the 32,000 vehicles crossing the M48 Severn Bridge daily, exceeded the 7.5-tonne limit.