Head Office
Head Office
(07) 4970 0100 Mon - Thu 8am - 5pm | Fri 8am - 4pm 19 Morgan Street. Gladstone Queensland
AS/NZS 4801:2001
ISO 14001:2015
ISO 9001:2015

What We Do

Queensland's Most Recognised Civil Company


Bulk and Detailed Earthworks

One of the countries largest privately owned civil contractors with significant experience in the provision of both bulk and detailed earthworks services throughout Queensland.


Specialist Concrete Structures

Highly reputable in civil concreting throughout the mining, energy, industrial and commercial sectors, McCosker’s perform high levels of concrete placement services.

Poly Welding

Water Infrastructure Requirements

Providing a large range of quality pipeline and dewatering services, McCosker offer a complete range of project packages including all associated procurement and installation works.


Providing a diverse range of services to the mining, construction, building and industrial and service sectors.

A solid history of infrastructure projects, both green and brownfields within the Central and remote Nth Qld regions. Excavation and installation of all underground site infrastructure including; storm water and sewer, electrical and communications, hydraulics, fire mains and potable water. Civil pavements and above-ground infrastructure, including roads and carparks as well as the excavation and construction of drains, swales and detention ponds.

Residue Management

Residue Management, Civil Infrastructure and Maintenance Operations

Supply Amphibious Scrollers – designed and built by McCosker – and modified LGP Bulldozers,  for all Maintenance and Operations Works at the RDA, Ash Dams and associated residue tailing dam structures.

Industrial Services

Install, inspect, maintain, repair, and manage facilities or infrastructure for clients.

We provide a wide range of high performance industrial infrastructure services to the industrial, construction and manufacturing and mining sectors.