Dublin Tunnel
Dublin Tunnel
Tunnel Facts & Figures
Construction of the Tunnel began in January 2001 and was completed and opened in December 2006. The aim of providing a dedicated route for Heavy Good Vehicles, – trucks and buses was hugely successful and at the end of 2022 the Tunnel had aided over 100 million journeys to and from the Port and city centre.
The total traffic volume through the Tunnel in 2022 was over 8 ½ million vehicles; or over 23,000 vehicles on average each day. Around 16,000 of these vehicles are classed as HGV – trucks & vans – who would otherwise have travelled through the city centre. This figure illustrates the Tunnel’s impact on congestion, safety and air quality for Dublin City.
Dublin Tunnel links Dublin Port to the M50 and the National Roads Network giving road users a journey time of approximately only six minutes from Dublin Port in the heart of the city to the M50 interchange at Junction 2, Coolock.
The Tunnel’s internal height is designed for safe passage of HGV’s height of 4.65m with a width of 2.9m and a length of 25 metres. The Motorway Operations Control Centre team monitor the Tunnel 24/7 working to keep the city, Port, and other links to adjoining networks flowing smoothly and safely.
Funding
Funding for Dublin Tunnel was provided by the National Development Plan and Transport Infrastructure Ireland (TII) formerly the National Roads Authority (NRA). The project represented a significant investment by the State in a piece of infrastructure designed to take the majority of Heavy Goods Vehicle (HGV) traffic out of the city centre.
ERTO manages all processes associated with the operation and maintenance of the Dublin Tunnel. This includes toll collection, traffic management, tunnel safety management, emergency and contingency planning, equipment and infrastructure inspection, as well as complex maintenance and capital renewals.


Tunnel Information
Location
The Dublin Tunnel connects Dublin Port (at East Wall, Dublin 3) to the M50 and national roads network at Santry, Dublin 9.
Length
5.6km total length, with 4.85km in the Tunnel itself and an additional 1.1km on surface in roads including the Toll Plaza.
Height
The Dublin Tunnel
operating height is 4.65 m
Journey Time
Approximately 6 minutes from Dublin Port to M50
Construction
NMI Consortium made up by shareholders Nishimatsu, Mowlem and Irishenco
Funding
National Development Plan and the National Roads Authority
Tunnel Information
Location
The Dublin Tunnel connects Dublin Port (at East Wall, Dublin 3) to the M50 and national roads network at Santry, Dublin 9.
Length
5.6km total length, with 4.85km in the Tunnel itself and an additional 1.1km on surface in roads including the Toll Plaza.
Height
The Dublin Tunnel
operating height is 4.65 m
Journey Time
Approximately 6 minutes from Dublin Port to M50
Construction
NMI Consortium made up by shareholders Nishimatsu, Mowlem and Irishenco
Funding
National Development Plan and the National Roads Authority
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