A key stretch of the M4 between Bristol and Bath will experience overnight closures for a week in January to facilitate ongoing construction on the new A432 Badminton Road Bridge in South Gloucestershire.
From Monday, January 5 to Saturday, January 10, the motorway will be closed in both directions between junctions 18 and 19 each night from 8 pm to 6 am. These closures will enable workers to remove concrete casings from the new bridge structure safely.
This section of the M4 has seen significant disruption in 2025 due to bridge works, including two full weekend closures in March for demolition of the old bridge and in October for installing steel beams on the new structure.
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The replacement bridge is expected to be completed by spring 2026, depending on weather conditions.
Sean Walsh, Route Manager for National Highways, commented: “We’re progressing well with the bridge and are excited to see it nearing completion. Early next year, we will focus on work along the bridge’s sides and on reconnecting it to the existing A432, marking a major milestone for the project. Weather permitting, the bridge is set to reopen by spring. We appreciate the patience of drivers and local residents during these works.”
During the overnight closures, fully signed diversion routes will be implemented for motorists. The eastbound diversion route will follow the same path in reverse.
After removing the concrete casings, National Highways will continue with earthworks and other civil engineering tasks before finalizing the bridge’s connection to the existing A432.
Once complete, the new Badminton Road bridge will restore a vital crossing over the M4 between Wick Wick Roundabout and Yate.
The original Badminton Road bridge, constructed in 1966, was closed in July 2023 following a detailed structural inspection that uncovered issues beneath the bridge. As a result, demolishing and replacing the bridge was determined to be the most efficient and cost-effective solution to restore this important motorway link.