Dublin City Council has suspended all works on the Strand Road cycleway following a High Court order.
Car restrictions - including traffic barriers, reduced parking, and a one-way system - were to be implemented as part of the measures for the new two-way Strand Road cycle path from Monday.
Traffic was going to be limited to one lane with cars allowed to travel outbound only to the Merrion Gates.
The local authority had devised a set of plans to avoid traffic rat-runs in Sandymount village under a six-month trial.
Independent councillor Mannix Flynn and local resident Peter Carvill had sought a stay on the works which was opposed by the council earlier this week, the Irish Times reported.
But the cycleway trial will no longer be going ahead after a High Court judge ruled that DCC had to suspend the project until a decision had been reached regarding the concerns raised by Cllr Flynn and Mr Carvill on the work undertaken and the lack of an environmental impact assessment.
The council shared an update on social media announcing that the one-way system will not be coming into effect on Monday.
A post on Twitter reads: "The one-way system will not come into effect on Monday.
"We are still committed to undertaking the Strand Road trial to provide safe and protected cycle facilities for all ages and to also improve the area for pedestrians, however, we cannot now give any date when this may occur as it will depend on the outcome of the court case.
"We are very disappointed at not being able at this stage to put in place these facilities where none exist at the moment."
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