Cycle lanes for the new Samuel Beckett bridge are to be upgraded following criticisms they are dangerous.
Councillor Andrew Montague, chairman of Dublin City Council's transport committee, said he had been assured the work would be carried out on the north and south quays.
The Labour representative was responding to comments by the Dublin Cycling Campaign which described the routes as "dangerous, unusable and unacceptable".
Cllr Montague admitted "there have been a few mistakes" in that the lanes were "not connected up properly".
"I've been on to the engineers in Dublin City Council and told them I'm not happy with it. They agree. There are problems but we're going to sort them," he told the Herald.
He said the problems were not with the bridge but with the existing lanes, which were "awful".
The Dublin Cycling Campaign said many lanes stopped without warning, while the signs were inadequate.
James Leahy, who tested the route for the cycling body, said it was "just not usable".
Mr Leahy said the route could not be used safely or "without breaking the law".
He accused the council of repeating "all the same mistakes of the past".
However, Cllr Montague said Mr Leahy was "over the top" with his criticisms in that, while the lanes were not satisfactory, they were not dangerous.
"I don't think they're putting people in danger," the councillor said.
The Department of Transport is to spend €10m this year on a new cycle route linking Rathmines to Fairview Park in Dublin.
Transport Minister Noel Dempsey said the 7km route would be safer for commuters.
The project is being fully financed by the department but the council has agreed to remove 130 of its paid parking spaces along the route. A new national cycling strategy revealed last year that much of the money spent on cycling infrastructure so far may have been wasted.
The strategy document acknowledged that cycling facilities constructed to date were "often of a poor standard" and "poorly maintained". Approximately 300km of cycle lanes have been constructed in the greater Dublin area. The total amount of expenditure on cycling infrastructure in Dublin since 1994 has been €30m.