Marine Infrastructure Engineering Consulting
Structural engineering for South Australia's marine infrastructure including wharves, jetties, seawalls, and coastal protection structures. JCY brings bridge and marine structural expertise developed through DIT's Bridge and Marine Infrastructure Delivery Team to support the assessment, remediation, and construction of maritime assets.
Engineering Overview
Marine infrastructure engineering addresses the structural assessment, remediation, and construction of structures in saltwater environments -- wharves, jetties, boat ramps, seawalls, and coastal protection works. JCY Construction Engineering provides specialist structural and construction engineering for marine assets, combining bridge engineering expertise with practical understanding of the accelerated deterioration mechanisms that affect concrete and steel structures in marine exposure conditions.
Marine Infrastructure Challenges
Marine structures face unique engineering challenges driven by aggressive exposure conditions, tidal access constraints, and complex loading combinations.
Marine Exposure Deterioration
Saltwater splash zones, tidal wetting and drying cycles, and airborne chloride exposure accelerate concrete deterioration and reinforcement corrosion in marine structures far beyond rates seen in land-based infrastructure. The tidal zone is particularly aggressive, with reinforcement corrosion rates that can reduce structural capacity within decades of construction if protective measures are inadequate.
Tidal Access & Construction Logistics
Marine construction and remediation work is constrained by tidal cycles, weather windows, and the logistical challenges of working over or in water. Piling, concrete pours, and protective coating application must be scheduled around tidal access, and temporary works must account for wave loading, current forces, and vessel movements in the construction zone.
Combined Loading Assessment
Marine structures are subject to combinations of dead load, live load, wave action, current forces, mooring loads, vessel impact, and seismic loading. Assessing structural adequacy under these combined loading cases -- particularly for ageing structures where material properties have degraded -- requires specialist structural engineering knowledge.
Services for Marine Infrastructure
Our marine infrastructure capability draws on both bridge engineering expertise and specialist marine structure knowledge.
Bridge & Marine Engineering
Structural assessment, remediation design, and construction methodology for marine structures including wharves, jetties, and seawalls.
Structural Engineering
Structural analysis under combined marine loading cases, capacity assessment for deteriorated elements, and strengthening design for ageing marine assets.
Construction Verification
Independent verification of marine construction including piling, concrete elements, protective coatings, and cathodic protection systems.
Temporary Works
Design of temporary works for marine construction including cofferdams, temporary piling platforms, and formwork systems for tidal zone concrete work.
Marine Infrastructure Reference
DIT Bridge & Marine Infrastructure Delivery Team
The South Australian Department for Infrastructure and Transport (DIT) maintains a portfolio of marine infrastructure including jetties, boat ramps, seawalls, and coastal protection works across the state. Jerome contributed engineering support to DIT's Bridge and Marine Infrastructure Delivery Team, applying bridge and structural engineering expertise to marine asset assessment and remediation.
This role involved structural assessment of marine assets in various states of deterioration, developing remediation and replacement strategies that account for tidal access constraints and marine exposure conditions, and providing construction engineering input to marine works programs. The combined bridge and marine portfolio provided exposure to the full spectrum of structural engineering challenges in both terrestrial and marine environments.
Marine Infrastructure Capabilities
Technical capabilities developed through DIT's bridge and marine infrastructure program and complemented by international bridge construction experience.
Marine Structural Assessment
Condition assessment and structural analysis of marine assets including wharves, jetties, boat ramps, and seawalls under combined marine loading cases.
Concrete Remediation (Marine)
Specification of repair materials, protective coatings, and cathodic protection systems for concrete structures in chloride-rich marine environments.
Piling Assessment & Design
Structural assessment of existing timber, steel, and concrete piles in marine environments, plus replacement piling design for deteriorated or inadequate foundations.
Coastal Protection Engineering
Structural engineering support for seawalls, revetments, and coastal protection structures addressing wave loading, scour, and geotechnical stability.
Marine Construction Methodology
Construction methodology for marine works addressing tidal access, weather windows, temporary works over water, and environmental management requirements.
Durability Design
Design for durability in marine exposure conditions, specifying concrete cover, reinforcement type, surface treatments, and drainage to maximise asset service life.
Marine Infrastructure Engineering FAQ
JCY provides structural assessment, remediation design, construction methodology, and construction verification for marine infrastructure including wharves, jetties, boat ramps, seawalls, and coastal protection structures. Our services cover the full lifecycle from condition assessment through to construction support, with particular expertise in concrete deterioration in marine exposure environments.
Jerome Coly contributed engineering support to DIT's (Department for Infrastructure and Transport) Bridge and Marine Infrastructure Delivery Team, which manages South Australia's portfolio of marine assets including jetties, boat ramps, seawalls, and coastal protection works. This role involved structural assessment, remediation strategy development, and construction engineering for marine assets across the state.
Marine structures are exposed to saltwater splash zones, tidal wetting and drying cycles, and airborne chloride, which accelerate concrete deterioration and reinforcement corrosion far beyond rates seen in normal atmospheric exposure. The tidal zone is particularly aggressive because concrete undergoes repeated saturation with chloride-laden water followed by drying, which concentrates chlorides at the reinforcement depth and initiates corrosion within years rather than decades.
Yes. JCY provides the structural assessment to determine the condition and remaining capacity of marine assets, develops remediation or replacement strategies, and then supports construction with methodology development, temporary works design, and construction verification. This end-to-end capability ensures consistency between the assessment findings, the remediation design, and the construction execution.
Many marine structures share structural engineering principles with bridges -- they involve piled foundations, reinforced concrete decks, and exposed structural elements subject to environmental loading. Jerome's bridge engineering qualifications from ESTP Paris and his 20+ years of bridge construction experience provide the structural engineering foundation that applies directly to wharf deck structures, jetty piles, and coastal retaining structures.
From the Field
Photography from real projects demonstrating this capability.
Need Marine Infrastructure Engineering Support?
JCY Construction Engineering provides specialist structural and construction engineering for marine infrastructure including wharves, jetties, seawalls, and coastal protection structures.