Bridges & Tunnels
The National Road Network has over 3,500 bridge and culvert structures that vary in age and type, from more than 300-year-old stone arch bridges to modern cable stayed bridges.
Eirspan
Eirspan is Ireland's bridge management system. Introduced in 2001, the Eirspan bridge management system coordinates and integrates activities such as inspections, repairs and rehabilitation work to ensure optimal management of the national road structure stock.
TII Tunnel Network
TII is responsible for three tunnels as part of the National Motorway Network. These are the Dublin Tunnel (M50), the Jack Lynch Tunnel (N40) and the Limerick Tunnel (N18). The Dublin Tunnel and the Jack Lynch Tunnel are operated and maintained by Egis on behalf of TII. Direct Route are responsible for the operation and maintenance of the Limerick Tunnel as part of the N7 Limerick Southern Ring Phase II PPP.