The scheme involves full signalisation and enlarging of the roundabout, widening of the eastern exit, a new roundabout to access the proposed Nexus 25 employment site, and improved pedestrian and cycling facilities.
It is expected to cost around £18m with allocated funding from the Heart of the South West Local Enterprise Partnership (LEP) Growth Deal Fund, Taunton Deane Borough Council, Highways England, and developer contributions.
Junction 25 currently experiences congestion in both peak hours, with queues frequently extending along the A358 in both directions and occasionally backed up onto the M5.
The upgrade aims to improve journey times, reduce congestion, improve Park & Ride journey time reliability and create a more attractive access to Taunton, Yeovil and the A303 from the M5. The scheme will also unlock access into the proposed Nexus 25 employment site and support other planned growth across Taunton.
Growth Deal Funding: £12.9m
Start on site: Winter 2018
Completion: March 2020