Dublin Tunnel

The Dublin Tunnel (Tollán átha Cliath) is a twin bore dual carriageway road traffic tunnel that forms part of the M50 motorway.
Starting from East Wall Road (Dublin 3) and finishing at Santry (Dublin 9), the tunnel connects Dublin Port with the M1 motorway near Dublin Airport.
Each bore accommodates a two-lane carriageway.
The tunnel is approximately 4.85 km long.


The Tunnel leads from Dublin Port (East Wall, Dublin 3) to the M50 and the National Roads Network (Santry, Dublin 9)


5.6 km total length, whereof 4.85 km in the tunnel and 1.1 km surface roads (including toll plaza)


Operating height 4.65 m

Journey Time

Approximately 6 minutes from Dublin Port to M50


NMI Consortium made up by shareholders Nishimatsu, Mowlem and Irishenco


National Development Plan and the National Roads Authority

The Dublin Tunnel was built with the purpose to take the vast majority of Heavy Goods Vehicle (HGV) traffic off the streets of Dublin City. A number of HGVs still need to deliver goods and materials to the city centre, but the scale and timing of those journeys is determined by Dublin's HGV Strategy, which is the responsibility of the Dublin City Council.

ERTO's 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 Maintenance.

Egis Road & Tunnel Operations Ireland