Public consultation on the scheme to improve the A303 including a 1.9-mile long tunnel past Stonehenge ends on April 23.
Derek Parody, Project Director for Highways England, said: “We remind people that consultation on the plans is still ongoing and the feedback we receive from everyone is really important in helping us to finalise our designs.
“The consultation website is still live and we would urge anyone who would like to comment on the proposals to do so before consultation ends on 23 April.”
After consultation, the scheme will go through the formal planning process later this year. Subject to statutory approval, construction is planned to start in 2021.