Our Work

Projects That Speak for Themselves.

A selection of completed civil contracting works across South Australia — from large-scale earthworks to precision drainage and road infrastructure.

Every project in our portfolio reflects our commitment to quality, safety, and on-time delivery. We work across commercial developments, residential subdivisions, infrastructure upgrades, and public works.

Commercial Subdivision Earthworks
Bulk Earthworks
Northern Adelaide, SA

Commercial Subdivision Earthworks

Large-scale cut-and-fill operations for a 45-lot commercial subdivision. Scope included site clearing, bulk excavation, subgrade preparation, and spoil management across a 12-hectare site.

Stormwater Drainage Upgrade
Drainage & Pipe Laying
Southern Suburbs, Adelaide

Stormwater Drainage Upgrade

Complete stormwater drainage system installation for a major residential development. Included 1.2km of pipe laying, pit construction, headwall installation, and connection to council infrastructure.

Industrial Estate Road Base
Road Base & Kerbing
Outer Metropolitan, SA

Industrial Estate Road Base

Subgrade profiling, road base compaction, and concrete kerb and channel installation across a 6-stage industrial estate. Delivered to tight tolerances for heavy vehicle access.

Structural Retaining Wall System
Retaining Walls
Hills Face Zone, Adelaide

Structural Retaining Wall System

Engineered retaining wall construction on a challenging sloped site. Included geotechnical compliance, drainage behind walls, and staged construction to manage site stability.

Trenchless Pipeline Installation
Pipe Jacking
CBD Fringe, Adelaide

Trenchless Pipeline Installation

Trenchless pipe jacking beneath an active road corridor to install a new utility pipeline without disrupting traffic. Certified HDPE poly welding completed to specification.

Infrastructure Dust Suppression Program
Water Trucks
Regional SA

Infrastructure Dust Suppression Program

Dedicated water truck support across a major regional infrastructure project. Continuous dust suppression and compaction water services maintained throughout the construction program.

Have a Project in Mind?

We'd love to hear about it. Contact our team for a tailored quote.

Tri Sector Industries

High-quality, efficient, and safe contracting services for commercial and infrastructure projects across South Australia.

Adelaide, South Australia

Our Services

  • Bulk Earthworks & Excavating
  • Civil Reworks
  • Drainage & Pipe Laying
  • Pipe Jacking & Poly Welding
  • Road Base & Concrete Kerbing
  • Retaining Walls
  • Carting & Water Trucks
  • Wet Hire

© 2026 Tri Sector Industries Pty Ltd. All rights reserved.

ABN: 686 484 293  |  Adelaide, SA 5000