Plans for a two-way cycle track which will reduce cars to one lane along the Sandymount seafront are going ahead, according to Dublin City Council.
The council said the new cycle track on Strand Road being introduced as part of the Covid-19 mobility plan should be ready in around 10 weeks for a six month trial.
Some local councillors have expressed disappointment.
This follows a public consultation which received 2,922 submissions with 56% of respondents in favour and 27% against, as well as another 17% who had mixed views and who expressed some concerns.
However, there were a large number of objections among Sandymount residents who fear that the loss of an inbound traffic lane will mean vehicles trying to access the East Link bridge will detour through residential streets.
Local councillor Mannix Flynn (Ind) said the news will be greeted with "general disappointment" in the area.
He said it is another example of traffic changes being pushed through under Covid-19, adding: "They are going to extreme lengths to introduce what is supposed to be a temporary measure."
A report from council officials included traffic modelling of the changes which found the biggest increases in traffic would be along Merrion Road with a 114% increase, Sandymount Avenue up 63% and Serpentive Avenue up 35%.
The council report stated said that these increases would be offset by the current reduction in traffic levels of 20-30% and further measures will be introduced such as two additional pedestrian crossings in Sandymount Village.
It also points that the area is covered by the SCAT system which allows real time adjustment of traffic signals to deal with traffic buildup.
The report also states that Inbound traffic along Strand Road from the Merrion Gates has already being impacted by increasing length of level crossing closures due to higher DART frequency.
The gates are already closed 30 minutes an hour during peak times and this is due to increase further.
Another local councillor Dermot Lacey (Lab) also expressed disappointment.
"The only people they seem to have listened to is the NTA," he said.
Cllr Lacey also said he is concerned that there is no monitoring system for problems as they occur.
The report is due to be discussed by local area councillors next Monday but council officials do not require their consent to implement the plan.