City planners are to install anti-terror bollards to deter attacks at a new civic plaza on the northside of the Ha’penny Bridge.
A planned water feature incorporating a line of water jets, or mini fountains, has been scrapped, however.
Dublin City Council plans to pedestrianise Lower Liffey Street following the rejection last year by An Bord Pleanála of the College Green pedestrian and cycle plaza.
The council said it will not submit plans for the Liffey Street plaza to the planning board.
Developer Noel Smyth, chairman of Dublin City Centre Traders Alliance, said the council will face legal action if it tries to bypass the board.
Plans drawn up by DHB Architects for the council earlier this year proposed the pedestrianisation of Liffey Street between Strand Street and the quays, with the water feature outside the Woollen Mills cafe.
The remainder of Liffey Street Lower and all of Liffey Street Upper, which runs from Abbey Street to Henry Street, will be upgraded to create a more “pedestrian-friendly” environment, with benches, bicycle stands and trees.