Our Solutions

Highway & Railway Bridges and Viaducts

Highway bridges are strategic structures that connect cities, accelerate transportation, and form the backbone of infrastructure. At Saytekno, we approach these bridges not only from an engineering perspective, but also by considering their environmental, aesthetic, and sustainability dimensions.

SAYPOST Beam is a new-generation composite prefabricated bridge girder system that combines steel, reinforced concrete, and prestressed/post-tensioned technologies. Thanks to its ability to span wide distances quickly and economically, it offers twice the span capacity with half the mass compared to conventional girder systems. This results in up to 50% savings in foundation and pier costs.

5 Different SAYPOST Beam Girder Types and Span Advantages

Wide spans such as 20–40 m, 40–60 m, 60–150 m, and 150–250 m can be crossed quickly and cost-effectively.
Provides significant speed and cost advantages in deep valleys and weak soil conditions.
Girders can be manufactured and transported in segments according to project requirements.
On-site bolted assembly allows the segments to be rapidly integrated into a monolithic structure.
Segment length and width can be custom-designed to suit transportation and installation constraints.

Bearing and Connection Systems

Saypost Beam bridge girders are compatible with conventional steel anchors, elastomeric pads, steel-plated elastomeric bearings, and spherical bearings.
No special formwork is required for post-tensioning and pre-tensioning systems.
Single-span or continuous girder applications are possible.
Production can be carried out with either constant girder heights or variable section heights.”

Special Applications and Ease of Installation

Inclined suspension and deck bridges can be executed more quickly and economically using Saypost Beam composite steel technology.
Wide spans and curved forms can be implemented without the need for formwork or scaffolding.
Necessary forms and installation methods for aerial railways and light metro bridges can be provided.
Rapid assembly, aesthetic edge finishes, or construction in cold weather can be achieved without in-situ reinforced concrete. Saypost Beam technology allows the use of precast reinforced concrete deck panels, and if needed, all reinforced concrete piers can also be precast.

Materials and Durability

High-strength S460 and low-carbon steels, or materials such as S355J2/K2+N subjected to Charpy impact or ‘V’ notch tests, can be used.
The yield and ultimate strength of steel at low temperatures is calculated, enabling the construction of bridges operable at -50°C to -70°C.
Reinforced concrete substructures are prefabricated in factory conditions using precast deck panels.

Fatigue Resistance and Longevity

Saypost Beam bridges exhibit significantly higher fatigue resistance than conventional steel bridges.
With an aesthetic design approach, bridges harmonize with their surroundings and achieve visual impact (VEE sections, trapezoidal forms, curved beams).
High corrosion resistance ensures extended structural lifespan.
Substructure concrete is made durable and long-lasting through pre-tensioning and post-tensioning loads.
Steel components comply with ISO 12944-5, EN ISO 1461, ASTM A123 standards, and Weathering Steel – Corten is used where applicable.
Lifespans can exceed 70–80 years typical of conventional bridges; for example, Istanbul’s Valide Sultan Haliç Bridge served for 134 years

Standards & Compliance

Saypost Beam calculations comply with AASHTO, EUROCODE, SNIP, and INDIAN Standards.
Can be applied in projects according to the standards of other countries.

Junction

Urban interchanges are not just transportation infrastructure; they are structures with high architectural and aesthetic value. With Saypost Beam technology, our interchange solutions offer both visual appeal and functionality through minimal pier usage and simple connection details.

Advantages of the Curved Beam System

Post-tensioned and precast beams can be produced in curved and modular forms thanks to Saypost Beam technology.
On-site bolted assembly ensures fast and safe installation.
While conventional precast beams require additional piers for straight solutions, Saypost enables the most economical routes with spans of 40, 60, and 90 meters

Horizontal and Vertical Curved Production

Saypost bridge beams can be produced with both horizontal and vertical curves.
Horizontal curves with spans of 60–90 meters can be achieved without intermediate piers.
When constructing interchanges on existing highways, pier placements can be planned flexibly and easily.”

Flexible Road and Terrain Adaptation

It is easy to adjust pier locations to avoid nearby buildings or underground utilities.
Required clearances at overlapping road intersections can be easily achieved with Saypost Beam bridges.
Saypost beams offer solutions at half the height of conventional steel or precast beams, reducing both construction costs and assembly time.”

Pedestrian safety in urban transportation is a critical element for a sustainable and comfortable transit network. Our company leverages its expertise in steel construction to design and build durable, aesthetic, and long-lasting pedestrian crossings.

Saypost Beam Pedestrian Bridges – Designed for Modern Urban Living

Ensures maximum pedestrian safety without disrupting vehicle traffic.
Enhances the city skyline with architectural value.
Provides high durability against weather conditions and external factors.
With high-strength steel materials and project-based engineering solutions:
- Custom designs can be created for any geographic or structural requirement.
- Offers rapid installation, low maintenance costs, and long-lasting performance.

Our company takes a leading role in designing and delivering safe, functional, and aesthetically pleasing pedestrian bridges.

Saypost Beam Emergency Bridge (SP-BOX) Systems

The SP-BOX systems provide rapid and safe bridge crossings during emergency situations. Up to three SP-BOX beam systems can be installed and pushed across to the opposite bank within just 1 day, ready for immediate use.

Key Models and Capacities:

SP-EB45-v10 – 45 m span
SP-EB60-v10 – 60 m span

Assembly and Logistics Advantages

Lightweight, durable, and low-maintenance structures with aluminum carriers.
Three-part design allows easy installation and transport.

Each part can be stored 24/7 on a single truck trailer.
Interlocking nose/leading beams are placed on the trailer for efficient transport.
One mobile crane-equipped truck is always kept in an accessible location.
If needed, four trailers can be quickly dispatched to the assembly site.
Bridge components require no special installation and can be easily joined using simple pin details.

Usage and Operation

Once assembled, the bridge can be pushed or pulled across the opposite bank using tractors, trucks, heavy vehicles, or manpower.
Installation is performed by trained and certified fire, police, and civil defense teams.
A drill is recommended every three years.

Future Technologies

For advanced versions, work is ongoing on AI-supported, autonomous, or semi-autonomous movable bridge components.
Technologies in development include automatic lowering and joining from trailers, and pushing the bridge across with an automated driving system.

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