Luas Cross City

The 5.9 km extension of the existing Luas Green Line runs north from the former Green Line terminus at St Stephen's Green, crossing the Red Line at the junction of O'Connell Street Upper and Abbey Street and serving the new Dublin Institute of Technology campus at Grangegorman before terminating at IE's Broom bridge station. 

The trackwork scope comprehends: 

• 6770 m of single track embedded in concrete with encapsulated groove rail and steel sleepers (embedded track)  
• 12 turnouts in embedded track with groove rail and encapsulation  
• 5 diamond crossing through the pre-existing Red Line  
• 523 m of open slab track with S49E1 vignole rail on bi-block sleepers within a concrete slab  
• 5791 m of plain line track on ballast with S49E1 vignole rail fastened to pre-stressed monoblock sleeper  
• 15 turnouts in ballasted track (S49E1 vignole rail on concrete sleepers/bearers)  
• 58 m of plinth track consisting of S49E1 rail on welded steel columns with Vossloh fastening system within the main depot building for maintenance purposes  
• 82 m of modified embedded track for the purpose of lifting within the main depot building  
• 72 m of modified embedded track for Sanding Shed with the required equipment (sand pumps)  
• 1 new wash plant using Gantrex direct fixations and vignole S49E1 rail to accommodate 54.7 m length trams  

While OCS works included:  

• 13.710 m of catenary system (OCS) including 350 OCS poles, 140 wall fixing, cabinets, power supply cables, section isolators, return cables, substation interface equipment installation and connection  
• 13.710 m of stray currents mitigation system including the SC mesh, continuity welds and SC collectors