Marine Civil Contractors in Mackay
Specialised marine construction delivering durable breakwaters, seawalls and coastal protection solutions.
Breakwater & Seawalls
Operating since the 1970's, CJD Investments are experts in marine infrastructure works, building durable and resistant breakwater and seawalls across the Northern and Central Queensland coastline. Our unique interlocking method and placement structure is tried and tested against the harshest conditions.
We can supply armour rocks of all sizes up to 50 tonnes and create tailored designs that is suitable for your unique requirements. You can also find a wide range of quarry products at our store, including aggregates, road bases, crusher dust and much more.
For experienced and knowledgeable marine civil contractors – get in touch with the team at CJD Investments today.
Emergency Repairs
Unfortunately, North and Central Queensland is no stranger to severe storms and cyclones. If you require emergency repairs for breakwater, seawalls or any other marine infrastructure, we’re here to help. We make sure to always have an emergency stockpile of armour rock, ready to tackle damages of all sizes. Our emergency response crew are highly experienced and qualified, utilising our large fleet of machinery which includes 5 to 90 tonne excavators, dump trucks, water trucks and much more.
To request a quote for your next marine infrastructure project, or to enquire about emergency repairs, give CJD Investments a call today.
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FAQ
Why are breakwaters and seawalls important?
Breakwaters and seawalls help protect shorelines, ports and infrastructure from wave action and erosion. These structures reduce the impact of waves, helping to stabilise coastlines and prevent land loss. In areas exposed to strong tides or storms, marine structures provide long-term protection for nearby assets. Proper design and construction are essential to ensure durability and performance. Materials such as armour rock are commonly used due to their strength and ability to absorb energy. Well-built marine structures help reduce maintenance costs and extend the lifespan of coastal developments.
What materials are commonly used in marine works?
Marine civil works often use heavy-duty materials designed to withstand constant exposure to water and weather. Armour rock is commonly used for breakwaters and seawalls due to its size, weight and durability. Concrete elements may also be incorporated depending on design requirements. Materials are selected based on environmental conditions, project location and engineering specifications. Proper placement methods help ensure stability and long-term performance. Using suitable materials reduces the risk of failure and minimises the need for ongoing repairs. Material selection is a critical part of successful marine construction.
What challenges are involved in marine construction?
Marine construction presents unique challenges compared to land-based projects. Tides, waves and weather conditions can affect access and work schedules. Ground conditions underwater or along shorelines can be unpredictable, requiring careful assessment. Environmental considerations must also be managed to minimise impact on marine ecosystems. Equipment must be suitable for operating in wet and unstable environments. Detailed planning helps address these challenges and reduce risks. Experienced teams are essential for adapting to changing conditions and ensuring construction progresses safely and efficiently.
