Puhoi to Warkworth Project
| Project Title: |
Puhoi to Warkworth Project |
| Client: |
Northern Express Group (NX2 - Fletcher & Acciona) |
| Location: |
Warkworth, NZ |
| Duration: |
10 Months |
| Scope: |
Silverstrand were contracted by NX2 to undertake the construction of a large multicell reinforced Concrete pipe culvert as part of the Puhoi to Warkworth Motorway project. The Pūhoi to Warkworth project will extend the four-lane Northern Motorway (SH1) 18.5km from the Johnstone’s Hill Tunnels to just north of Warkworth. It is the first stage of the Ara Tūhono – Pūhoi to Wellsford project. It will be open for traffic by late 2021.
- Construction of 3 cell culvert, 133m long with 2400mm dia reinforced concrete pipes;
- Bulk earthworks and excavation and removal of in excess of 9,300m3 of spoil;
- Placement of sand bedding layer;
- Placement of flowable backfill to culvert;
- Placement and compaction of 1,250m3 of rock fill above pipes;
- Installation of subsoil drainage either side of culvert;
- Installation of manholes and risers to culvert;
- Construction of in-situ reinforced concrete inlet and out let structures;
- Installation of rock protection to inlet and outlet structures;
- Survey and set out of pipeline;
- Material handling and transportation of pipework; and
- Establishment of access roads; and Management of all QHSE for the works.
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