Construction workers will pull out of the Old Town by the end of November and return to the site in the new year under new plans supported by traders.
Officials are working out the finer points of the proposal, which was one of three options for moving forward with late-running works that were put to business owners and householders during a meeting on Monday.
Herts County Council, Dacorum Borough Council and contractors Jackson Civil Engineering came up with the options after struggling traders said that plans to close the High Street in the run up to Christmas were unacceptable.
It means work already started in the road will be finished, with stop and go signs being used to control traffic. Workmen will then return in January to finish the one-way project.
The other two options presented were for working hours to be ramped up to get the work completed by the end of November but this would have required further road closures, or for workmen to stop all works now and fill holes with temporary Tarmac until the new year.
Council chiefs have confirmed that they will be driving ahead with option one.
The full details, which also include offering financial help to Old Town businesses, free parking vouchers for shoppers and an advertising campaign, will be presented to Dacorum Borough Council’s cabinet on Tuesday.