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M50 D & C Ltd – M50 Motorway Upgrade

The M50 (Phase 2) PPP Contract comprises the design, construction, operation, maintenance and financing of the upgrade of approximately 24 km of the existing two lane carriage-way to three lane standard; the provision of auxiliary lanes between the M1 and N3 junction and between the N7 and Scholarstown junctions; the major upgrade of the junctions at the M1, N2 and N3 from grade separated junction type to partially free/free flow interchanges and upgrade works to the junctions at Ballymun, Ballymount, the N81, Scholarstown and Sandyford. The U bridge beams & slab configuration were used on 15 bridge structures, ranging from U3, U5, U7 U8, U9, U10 & U12. Precast ‘L’ shaped retaining walls varying in height from 2m-5m with a Reckli pattern on front face of walls. Over 8000m2 of reinforced Soil Hexlock panels & coping units were manufactured using 50% GGBS concrete. Masking panels were manufactured to hide the outside edge of the cast in-situ banks seats. Precast Concrete Box Culverts and UAN portal frame structures were also supplied along with bespoke precast bridge structure 17.

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