The council has gone back to the market with refreshed procurement plans in the face of volatile market costs, despite originally planning to chose a contractor for the project by July.
Its new procurement plan will include a simplified approach to early contractor involvement and amendments to allow for rising construction costs, reports Construction Enquirer.
A market engagement event setting out the terms of the new tender will be held on Friday 1 July via Microsoft Teams.
Under this new timetable, prequalification documents will need to be submitted by 4 August with shortlisted firms invited to bid in October.
A winning early involvement contractor will now be named in February 2023, for a project start just before the end of next year.
The preferred improvement scheme will include a roundabout built above the motorway.
The major project will also include a new West Cheltenham Link Road east of Junction 10 and widening of the A4019 to the east of Junction 10.
The county council has successfully secured £249m for the proposed scheme after a bid to Homes England’s Housing Infrastructure Fund.