The Small Firms Association has called for the appointment of a "supremo" to oversee completion of the £41 billion (€52 billion) National Development Plan.
The SFA's director Mr Pat Delaney, says such a move is essential to ensure roads, public transport, waste, sewage, water supply and energy projects are "delivered on time and within budget".
He added: "The planning system itself has become part of the infrastructural logjam in a variety of areas.
"Where else would an important project - clearly in the public interest - such as the Dublin Port Tunnel be delayed for 13 years."
According to the SFA, the National Development Plan "supremo" should be a Government nominee with executive responsibility to deliver all the major infrastructure aspects of the National Development Plan.
The appointee should not hold an elected office but would be accountable to all stakeholders - the Government, the public and business interests - for the successful delivery of the plan on time and within budget.
"Unless the National Development Plan is prioritised and someone is made accountable for the overall day to day management of the plan, Ireland could end up with many unfinished projects in the event of any economic downturn.
"While the plan is both imaginative and ambitious, unless priorities are established and the Government shows the necessary resolve then the plan will not be deliverable," said Mr Delaney.
