Plans for the A358 are expected in the Spring according to Highways England.
Officials have been consulting on different routes and say exhibitions or meetings are now being planned for the New Year.
The A358 connects the A303 at Ilminster and M5 at Taunton.
David Stock, Highways England Project Manager for the A358 scheme, said: "We're very grateful to everyone who participated in our consultation, and we completely understand that people want a solution as soon as possible to the congestion and long delays they currently experience and the harmful impact on the region’s economy.
"The A303/A358 corridor is a vital connection between London, the South East and the South West, and we are committed to improving it, but we have to ensure we have the best solution possible.
~"We hope to announce the preferred solution in the spring, we’ll be keeping community groups informed in the meantime, and the public will have another chance to comment on the proposals after we have developed the design of the preferred route.”
"Three options were presented during consultation and more than 1,500 groups and individuals responded.
"The engagement will start early next year with the first of a series of community forum events with representatives from local authorities, parish councils, local businesses and community groups.
"Invitations to the community events will be issued shortly and updates will also be posted on the scheme page here
"The Government is committed to upgrading all remaining single carriageway sections of the A303/A358 corridor, and together with the A358 scheme, Highways England is also delivering the A303 Stonehenge and A303 Sparkford to Ilchester schemes as part of the £15 billion first Road Investment Strategy.
"Planning applications for the latter two schemes have been accepted for examination by the Planning Inspectorate."