The solution considered to best suit the site conditions and the requirements of the tender is a constant-depth prestressed concrete beam supported on reinforced concrete piers. This is a classical approach—a multi-span bridge design—that has been employed since the earliest days of railway construction, particularly when crossing U-shaped valleys.

For both viaducts, the deck, consisting of a straight beam (580m-long for Sázava viaduct, 696m-long for Sázavka viaduct) and a uniform depth, is supported by evenly spaced piers at 58m intervals (10 spans for Sávava viaduct, 12 spans for Sázavka viaduct), ensuring an effective static response of the structure.

This design spans both the river and the existing railway line (Sázava viaduct) and also a road in case of Sázavka viaduct, while naturally adapting to the geometry of the valley floor and surrounding slopes.

The solution aligns well with both the horizontal and vertical geometry of the route, featuring a gentle horizontal curve and a concave vertical profile—both characteristic of high-speed rail infrastructure.

From an aesthetic and compositional perspective, the viaduct is immediately recognizable as a railway structure. The span length (58m) is proportionate to the height of the tallest piers (37m), evoking the classic elegance of historic railway viaducts.

The trapezoidal cross-section of the deck, while not entirely conventional, provides a cleaner visual profile for the structure. Although this design requires slightly more material and introduces a modest construction challenge—due to the need to cast three separate cells—it results in only a limited increase in cost. In return, it offers enhanced structural robustness and facilitates maintenance, alongside a more refined appearance.

The piers gradually increase in size from top to bottom to adequately resist the varying structural loads. In the longitudinal elevation, the piers feature a recessed groove that visually breaks up the pier face. This design detail allows for the straightforward creation of two independent shafts at the point where the pier connects with the deck. The structural rationale behind this arrangement is explained in the following sections.

Efforts have been made to ensure the transition between the bridge and the ground is as gentle as possible. To this end, embankments with shallow slopes are proposed in these zones, facilitating successful planting and landscaping that will help to mitigate the visual impact of the infrastructure on the landscape.

The crossing over the Sázava river has determined the length of the main span, which is repeated for the other spans as there is no significant river presence along the rest of the crossing. The uniformity of the spans throughout the viaducts imparts a sense of calm and sobriety to the overall composition.