We are a multidisciplinary partner providing turnkey solutions for structural equipment designed for the erection or construction of bridge decks, and increasingly, for the installation of the entire structure, including piers, deck and finishing works. Our approach combines technical excellence, value engineering, and project management to deliver safe, cost-effective, and high-quality outcomes for bridges of all types and scales. From early planning through to maintenance and repair, Freyssinet delivers end-to-end solutions tailored to each project's unique needs.

Our solutions

Freyssinet offers a complete portfolio of advanced bridge construction methods, covering in-situ concrete and steel deck construction, precast segmental erection, and heavy lifting and handling of large structural elements. With over 70 years of global expertise, we provide design and build packages that include method selection, equipment supply, erection, post-tensioning, and finishing works.

Incremental launching

The principle is to progressively construct the bridge deck behind one of the abutments. This can be done for in-situ casting or Steel girder assembly.

Deck segments equal or less than span section length are cast against previously launched deck segments. The new combined deck length is then launched making room in the casting bed for another new deck segment to be cast.

As segments are added, the bridge is launched from the abutment and can be launched over either temporary or permanent bearings using specially fabricated Iso-glide low friction pads. Additional segments are cast and the entire deck launched until the bridge length is complete and in its final permanent position.

Launching of Steel Bridges

Structural steel bridges can be launched incrementally assembled or as a full steel bridge assembly.

For both concrete and steel bridges, provision of a launching nose stressed against the first deck segment will reduces the bending moments in the lead deck segment during launching.

Freyssinet offers a range of efficient precast segmental erection methods tailored to complex bridge construction projects. Balanced cantilever erection, using launching gantries or lifting frames, is ideal for long-span structures, enabling high erection rates with minimal disruption. Span-by-span erection with launching gantries allows fast installation of full spans, particularly suited to continuous multi-span viaducts. For adaptable and cost-effective solutions, span-by-span erection on props is used where ground conditions permit. Additionally, our precast girder erection techniques ensure precise placement with simple equipment and minimal crew requirements. These methods deliver speed, versatility, and precision across a wide variety of project conditions.

Discover our case studies

Build
Australia

Victoria Bridge Strengthening Works

Brisbane, QLD
Build
Australia

Sydney Gateway Twin Arch Bridge Launching

Sydney, NSW
Build
Australia

North West Rail Link (NWRL)

Sydney, NSW

Contact us

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