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Kaliště Bridge – Overpass Over the D1 Motorway at km 24.6
The construction project was for the modernisation of the D1-031 overpass on the D1 motorway in the section between Mirošovice (km 20.854) and Hvězdonice (km 29.500). The original bridge was demolished and replaced with a new bridge structure.
Basic information
Project Investor:
Road and Motorway Directorate of the Czech Republic
Project Designer:
Valbek, spol. s r.o.
Project Duration:
07/2021 – 09/2022

Characteristics
The bridge is an integral single-span steel-concrete structure with a span of 59 m. The superstructure consists of a pair of steel truss beams made of welded cross-sections with a variable height of 4.5–1.8 m defined by the arches of the two lower belts. They meet in massive reinforced concrete supports, which they are fixed into.
Project in numbers
- 57.95 mBridged distance
- 84.95 mBridge length
- 14.8 mBridge height
Uniqueness of construction project
The process of assembling the steel structure was atypical. After being assembled into a unit weighing 165 tonnes and 77 m long, it was transported 10 km along the closed D1 motorway over two nights. By bending the truss beams, a visually attractive solution for the bridge was created, where its lower belts move away from each other from the top towards the centre of the span.
