Residents living near the former University of South Wales campus in Caerleon have said large vehicles are causing disruption as a result of the ongoing construction work at the site.
Residents living near the historic campus have raised concerns about the routes being used by heavy goods vehicles (HGVs) going to the site.
Plans by Redrow Homes to build 219 homes on the Grade-II listed campus, which is also used as a filming location for the Netflix series Sex Education, were given the green light by Newport City Council's planning committee in January.
Work on the development began earlier this month, but some residents have said there have already been problems with large construction vehicles using non-approved routes to get to the site.
They said there have been instances where lorries are trying to squeeze through narrow roads with parked cars and reversing on pavements.
Caerleon Cllr Joan Watkins said she had been made aware of the issues by a number of residents.
"Since work began in early February there have been incidents where vehicles are not always following the agreed routes, and are instead going up Eastfield Way rather than Eastfield Road. It's quite a narrow road," she said.
"As far as I'm aware there have been at least half a dozen instances where the agreed routes are not being followed."
"It's quite an issue. If you see these lorries, they really are juggernauts. You have these huge vehicles going up narrow roads with parked cars, putting them at risk.
"Residents are rightly not happy, especially when they see huge vehicles trying to reverse across pavements."
Cllr Watkins added that she had been in touch with planning officials at the council regarding the issue.
Jane Carpenter, Planning Director for Redrow said: "Our contractor is keeping a log of all lorries that are coming to site and we have asked them to remind drivers of the need to adhere to the correct route. We will continue to monitor the situation and will not hesitate to take action if a driver is found to be using routes that are not agreed."
Last month WalesOnline reported that traffic pollution levels in Caerleon remain dangerously high, with two areas of the village exceeding the maximum limits on annual mean nitrogen dioxide (NO₂) levels targeted by the Welsh Government.
And Cllr Watkins said there were still major concerns around "noise and pollution" as well as ongoing fears over the disruption to the area from the development, which is expected to take around six years to complete.
Local resident Andrew Taylor said he was unhappy with the number of lorries that would be passing through the area.
"In essence, very large vehicles are destined to utilise residential streets through the Lodge housing estate for several years in order to deliver and take away materials from the building site.
"The 1.3 mile journey takes HGVs past 250 homes, and traffic will impact on a further 700+ properties that feed onto these roads. This detour is completely unnecessary and will seriously blight the lives of around one-third of the population of Caerleon."
Redrow Homes said in December that a number of issues raised by residents had been addressed throughout the consultation period for the plans.
It said alterations had been made including "an additional footpath, updated arrangements for visitor parking and a re-plan of the main boulevard in line with requests from consultees."
