There are 84 bridge structures on the Eurolink M3 Motorway and 44 on the M4/M6 Motorway including overbridges, underbridges, culverts, toll booths and sign gantries. These structures must be inspected at maximum intervals of 6 years under the NRA Eirspan Bridge Management System by NRA trained Bridge Inspectors.

MMConsult has undertaken the Principal Inspection of the 84 structures and inputted the data onto the NRA Eirspan Database on behalf of Eurolink Motorway Operations (M3) Ltd during 2012 and 2018. MMConsult carry out Routine Maintenance Inspections of the structures on an annual basis.