Adelaide's Bridge & Infrastructure Specialist
Bridge & Infrastructure Engineering Consulting. Adelaide.
Over 20 years of hands-on bridge and civil engineering experience across France, Morocco, and Australia. From Freyssinet post-tensioning to the Darlington Upgrade, JCY delivers specialist engineering consulting for South Australia's most complex infrastructure projects.
Jerome Coly
Principal Engineer · ANI Osborne, 2022
Trusted by government & Tier 1 contractors
Engineering Overview
JCY Construction Engineering is an Adelaide-based bridge and infrastructure consulting firm led by Jerome Coly, a French-trained civil engineer with a BE in Road & Bridge Engineering from ESTP Paris. With over 20 years of experience across France, Morocco, and Australia, JCY provides specialist bridge engineering, post-tensioning consulting, construction verification, and project management services to government agencies and Tier 1 contractors delivering major infrastructure across South Australia.
Specialist Expertise
Bridge Engineering
Design verification, construction methodology, and technical oversight for new bridges, bridge widening, and bridge remediation projects across South Australia.
Learn MoreProject & Contract Management
End-to-end project delivery and contract administration for infrastructure works. Scope management, programme oversight, and stakeholder coordination.
Learn MoreConstruction Verification
Independent construction verification and quality assurance for civil and structural works. Compliance checking against design specifications and Australian standards.
Learn MorePost-Tensioning
Specialist post-tensioning engineering from Freyssinet-trained expertise. Tendon design review, stressing calculations, grouting supervision, and PT system compliance.
Learn MoreTender & Method Engineering
Competitive tender preparation and construction methodology development. Buildability reviews, temporary works concepts, and risk-optimised pricing strategies.
Learn MoreStructural Engineering
Structural analysis and design for retaining walls, culverts, noise walls, and ancillary infrastructure. Capacity assessments and remediation design for existing assets.
Learn More20+
Years Experience
3
Countries
8
Major SA Projects
$2B+
Combined Project Value
Selected Projects
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Laing O'Rourke / DPTI
Gateway South Darlington Upgrade
Structures management and FRP substructure delivery on Adelaide's North-South Corridor, including SPMT bridge installation and precast pier programme.
View Project.JPG&w=3840&q=75)
Department for Infrastructure and Transport
DIT Regional Bridge Renewal
Multi-bridge renewal program across the South Australian regional road network — Onkaparinga Valley Road, Princes Highway, Horrocks Highway and beyond.
View Project
Australian Naval Infrastructure
ANI Osborne Naval Shipyards
Construction verification and heavy lift coordination for defence-grade infrastructure at Osborne, including 1,200-tonne crane operations and footbridge installation.
View Project
On site at Gateway South, Darlington (2018)
The Principal
Jerome Coly
I'm a French-trained civil engineer with a Bachelor of Engineering in Road & Bridge Engineering from ESTP Paris. Over more than 20 years I've delivered bridge and infrastructure projects across three countries—from post-tensioned structures with Freyssinet in France and Morocco, to motorway construction with Laing O'Rourke and ACCIONA here in Australia.
Since arriving in South Australia in 2011, I've contributed to the state's largest road and bridge programs, including T2T, T2D, Gateway South, the DIT Bridge Renewal Program, and the Bolivar Wastewater Treatment Plant. I bring international design expertise combined with hands-on site-level construction knowledge—and I founded JCY Construction Engineering to give clients direct access to that experience without the overhead of a large firm.
Full BiographyHow I Work
A System & Process Driven Approach.
Every project starts the same way. I dive into the design drawings, the technical requirement specifications, the standards, and the program for the package I'm responsible for. Then I run two checks before anyone breaks ground.
01
Internal Sanity Check
Are the design drawings, technical requirements, standards, and program all coherent with each other? Mismatches are caught before procurement and before the first crew shows up on site.
02
External Clash Detection
Permanent design works, temporary works, existing infrastructure, as-builts, live overhead cables, and underground services all checked against each other. Risks identified, issues flagged, the team prepared.
03
Team Goals & Tracking
Goals are set, progress is tracked, the program is updated, and status is reported. The package gets delivered smoothly so the wider project stays on track.
04
Where to Pay Attention
From experience, I know where the details bite and where the surprises hide. I prep the team for the challenges before they arrive on site.
Frequently Asked Questions
JCY Construction Engineering provides specialist bridge engineering, project and contract management, construction verification, post-tensioning consulting, tender and method engineering, and structural engineering services. We support government agencies and Tier 1 contractors on major infrastructure projects across South Australia.
JCY Construction Engineering is based in Adelaide, South Australia. We serve clients throughout the Adelaide metropolitan area and regional South Australia, with project experience spanning France, Morocco, and Australia.
Jerome Coly holds a Bachelor of Engineering in Road and Bridge Engineering (BE Road & Bridges) from ESTP Paris, one of France's leading civil engineering schools. He has over 20 years of professional experience across three countries, working with international firms including Freyssinet, Laing O'Rourke, and ACCIONA on bridges and infrastructure valued at over $2 billion combined.
JCY has contributed to major South Australian infrastructure projects including the Torrens to Torrens (T2T) motorway, Torrens to Darlington (T2D), Gateway South Darlington Upgrade, GREP (Grand Regulatory and Environmental Project), DIT Bridge Renewal Program, and the Bolivar Wastewater Treatment Plant. Internationally, Jerome's experience includes the USW Elevated Motorway and bridge construction in France and Morocco.
Yes. JCY has extensive experience working with the South Australian Department for Infrastructure and Transport (DIT) and SA Water, as well as Tier 1 contractors delivering government-funded infrastructure including motorways, bridge renewal programs, and wastewater treatment facilities.
JCY combines French-trained bridge engineering expertise with over two decades of hands-on construction experience across three countries. This blend of international design knowledge and practical site delivery means we understand both the engineering theory and the real-world challenges of building complex infrastructure. Our principal, Jerome Coly, has personally delivered projects for Freyssinet, Laing O'Rourke, ACCIONA, and York Civil.
Let's discuss your next infrastructure project.
Whether you need bridge engineering input, construction verification, or a specialist set of eyes on a complex tender, JCY is ready to help. Get in touch to talk through your project requirements.
Get In Touch