M3 Motorway Bridges (Füzesabony–Polgár)
The construction of the M3 motorway section between Füzesabony and Polgár was an important milestone in the eastward expansion of Hungary’s expressway network. Along the approximately 60-kilometre route, numerous bridges and engineering structures were required to accommodate traffic needs while adapting to varying terrain, hydrological conditions and environmental requirements.
As part of the general design assignment undertaken by UNITEF–CÉH KKt., we prepared the detailed construction designs for 25 bridges. Our bridge engineering team worked on the structural design of the various engineering structures, while we also provided overall design coordination for the Oszlár Tisza Bridge, one of the most significant structures along the route.
One of the project’s distinctive features was the design of bridge structures adapted to environmental and water management requirements. An approximately 260-metre-long overpass was constructed above the sensitive Mocsárrét habitat to protect the area’s valuable vegetation. A further six bridges provided crossings over the Tisza floodplain. The Oszlár Tisza Bridge, extending more than 400 metres, consists of a main river bridge with a steel–concrete composite superstructure and adjoining floodplain bridges. Its construction required complex bridge engineering solutions.
The completed structures contributed to the safe development of the expressway connection and improved road accessibility in the region east of the Tisza River. The project represents a significant bridge design reference for us, combining the detailed design of numerous engineering structures with the coordination of a major river bridge and the development of engineering solutions adapted to the natural environment.
