A358

A358 Taunton - Southfields 14 February 2016

Construction of a new dual two-lane road to replace the existing single two-lane A358 between Taunton and Ilminster. The new road is likely to be built to Highways England's new "expressway" standard and may incorporate parts of the existing road in places.

It is not yet clear whether the scheme will incorporate an improved junction with the M5, or whether it will lead directly onto the A303 Ilminster Bypass rather than taking a less direct line to terminate at the Southfields Roundabout as at present.

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A358 Ilminster - Taunton 25 December 2010

Upgrade of the existing single carriageway road to dual two-lane carriageways with grade-separated junctions. This route will replace the substandard A303 between Ilminster and Exeter as the trunk route from London to the South West. It avoids having to improve the A303 through the Blackdown Hills, but will increase the traffic load on the already-busy M5. Critics claim that it is inviting problems by concentrating all traffic for the south west on one long section of the M5.

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