Lord Stoddart of Swindon – 2015 Parliamentary Question to the Department for Transport

The below Parliamentary question was asked by Lord Stoddart of Swindon on 2015-11-09.

To ask Her Majesty’s Government when work will commence to convert the M4 to a smart motorway from junction 3 to Theale; what the estimated time of completion is; what the estimated final cost of the project is; and what level of traffic disruption is expected during construction.

Lord Ahmad of Wimbledon

From Highways England’s latest information, the M4 junction 3 to 12 scheme is scheduled to start works in 2016/17 and to complete in 2021/22. The latest cost estimate for the scheme is in a range of £614m to £862m with a central estimate of £715m.

The improvements to the M4 are being designed to minimize traffic disruption. The work will be phased but ensure that sections will provide three narrow lanes open to traffic during the daytime and at times of peak flows. Lane closures will take place at night, when traffic flows are lower, for specific tasks such as re-surfacing and gantry and bridge erection. Some complete closures of the M4 will also be required to allow for the demolition of eleven overbridges that are to be replaced as part of this scheme. These will be arranged for periods when flows on the motorway are at their lowest, usually at weekends.