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Weight restriction on key M4 viaduct extended after inspection reveals worsening condition

The Highways Agency’s weight restrictions on the elevated section of the M4 between junctions 1 and 3 have been extended to include any vehicles weighing more than 7.5t.

From Friday vehicles weighing 7.5t or more have been barred from using the westbound M4 between junctions 1 and 3, and the eastbound M4 between junctions 3 and 2 while structural inspection work continues on the Boston Manor Viaduct. The Highways Agency restricted vehicles weighing more than 17t from using the section near Heathrow on 24 March.

The restriction is a precautionary measure after a scheduled inspection on the Boston Manor viaduct, just west of junction 2, identified required maintenance work to the structure.

The Hounslow Council is monitoring the situation with the Highways Agency in order to help minimise any travel disruption.

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