The Dublin Port tunnel, when completed, will have an operational height of 4.65 metres. It is the view of Dublin City Council and the National Roads Authority that the Dublin Port tunnel will facilitate almost all of the HGV traffic using Dublin Port. Two vehicle height surveys of HGVs using Dublin Port — one by the Dublin Port Company and one by the National Institute of Transport and Logistics — indicate that between 0.6% to 1.7% of HGVs entering and leaving the port exceed 4.65 metres.
The issue of routing vehicles greater than 4.65 metres through the city will be addressed in the context of the HGV management strategy being prepared by Dublin City Council.