SH1 PORIRUA TO JOHNSONVILLE - WELLINGTON

Client: Downer

Location: Wellington

Service: SH1 Porirua to Johnsonville - Waka Kotahi NZ Transport Agency

 

Date started: August 2021

Date completed: On going

Challenges

Downer needed to install 6km of ducting for the installation of new ITS infrastructure including new LCS, VMSS, Camera, Loop Vehicle Detection and underlying communications/power infrastructure.

They decided to use Marais Laying NZ’s services to trench along SH1.

Trenching had to be performed at night with one traffic lane closure and the client wanted a narrow trench – 650 x 150mm.

The ground conditions were expected to be difficult, therefore we decided to use one of our rock saws.​

Solution

Marais Laying NZ proposed using a rock saw named TESMEC TRS300 to increase productivity and reduce its footprint due to hard ground conditions.

Result

This project allowed the company to introduce a new range of solutions for the installation of ITS underground services in busy areas, while keeping the timeframe shorter and leaving a smaller footprint than previous existing techniques.

Key fact:
  • +120m per night trenched in berm and asphalt shoulder

Key equipment used:
IMG-2921.jpg

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