Project name: Bochnia Bypass
Location: Bochnia, Poland
Design team: Promost-Wisła Sp. z o.o. – a family-owned engineering company with over 30 years of experience in the design of road and bridge infrastructure, serving both public and private sector clients across Poland and beyond.
The goal: The Bochnia Bypass was designed to relieve traffic congestion in the town center by redirecting transit traffic and improving access to the national road network. The project also supports regional development by enhancing safety, mobility, and long-term infrastructure efficiency.
Design objects: The project includes a new bypass road with modern intersections, a railway overpass, and integrated drainage infrastructure. All elements were designed to meet current standards while fitting seamlessly into the existing urban and natural environment.
Software solution used: Plateia by CGS Labs
Introduction: A Strategic Bypass for a Growing Town
Located in southern Poland, the town of Bochnia has long faced challenges related to traffic congestion and limited connectivity to major transport corridors. To address these issues, regional authorities initiated the construction of a strategic bypass road designed to redirect heavy traffic away from the town center and establish a direct link to national roads and the nearby motorway. The Bochnia Bypass is a key infrastructure investment aimed at improving traffic flow, safety, and long-term regional development.
Promost-Wisła Sp. z o.o., a family-run engineering firm with decades of experience in civil infrastructure, was selected to lead the design of this vital road segment. The project includes a new road corridor, intersections, a railway overpass, and drainage systems—all integrated into a complex, constrained terrain.
Project Challenges: Limited Space, Complex Geometry, and a Demanding Longitudinal Profile
Designing the Bochnia Bypass involved several demanding engineering challenges. The terrain along the route was highly constrained, with existing buildings, infrastructure, and environmental limitations creating a complex design environment. A particularly critical aspect was the need to connect fixed points on the national road network while crossing an active railway line within a very short section of the corridor.
This section was characterized by significant elevation differences, which made the design of the longitudinal profile especially demanding. Achieving a smooth and technically compliant alignment required careful adjustment of both vertical and horizontal geometry.
Additionally, the project underwent multiple updates during the design phase due to evolving requirements and stakeholder input. Thanks to Plateia, these changes could be implemented quickly and consistently across the entire project, significantly streamlining the process. The final design also had to ensure long-term functionality, durability, and smooth integration with drainage and utility systems.
Image: General Layout Plan of the Bochnia Bypass created using Plateia Software by CGS Labs.
Software Solution: How Plateia Supported 20 Years of Road Design
Having used Plateia for almost 20 years, the design team at Promost-Wisła was well-acquainted with its capabilities and confident in relying on it for a project of this complexity. Plateia by CGS Labs—an advanced road design software tailored to the needs of road designers – proved instrumental from the earliest planning stages through to detailed design. It provided the flexibility, precision, and efficiency required to manage the unique challenges of the Bochnia Bypass.
Using Plateia, the team was able to model the existing terrain accurately and develop optimal alignment solutions while continuously adapting to constraints imposed by the surroundings. The intuitive interface made it easy to interactively design and refine road geometry, including both horizontal and vertical alignments, ensuring smooth integration with the railway overpass and existing road network.
Another essential benefit was Plateia’s ability to automatically synchronize changes between different parts of the design. Whenever updates were made to longitudinal profiles or cross-sections, those modifications were reflected in the overall situation plan—saving significant time and reducing the risk of inconsistencies. The program also enabled the export of high-quality 3D models, which supported coordination with other disciplines, particularly stormwater and utility design teams.
As Andrzej Śliwka, a civil engineer from the design team, explains:
“Plateia significantly improves and speeds up the entire design process. It allows us to implement changes quickly and efficiently, which is essential on complex projects like this. It also automates the creation of drawing documentation, and the fact that the entire project can be managed within a single file is a major advantage for coordination and clarity.”
Furthermore, Plateia’s built-in support for Polish design standards ensured full regulatory compliance, while its compatibility with multiple CAD platforms allowed for flexible use across different design environments. This combination of powerful features and practical usability made Plateia an indispensable part of the project workflow.
Project Outcomes: Improved Connectivity and Safer Travel
The Bochnia Bypass is expected to deliver a wide range of benefits to both the town and the surrounding region. By redirecting through-traffic away from the urban center, the bypass will significantly reduce congestion, noise, and pollution in residential areas—improving the overall quality of life for Bochnia’s inhabitants. The project also establishes a faster and more efficient route to the national road network and the motorway, cutting down travel times for commuters and freight operators alike.
One of the most impactful features of the project is the grade-separated crossing over an active railway line, which greatly enhances traffic safety and ensures continuous vehicle flow without the risk of delays or collisions. Additionally, the new road corridor has been designed with long-term development in mind, enabling future expansion and integration with adjacent infrastructure and utility systems.
From an engineering perspective, the use of Plateia significantly reduced the time required for revisions and documentation updates. The ability to coordinate across design layers in real time helped maintain high levels of accuracy and consistency throughout the project, while also streamlining communication with stakeholders and approval bodies.
Conclusion: Smart Design for Sustainable Growth
The Bochnia Bypass project demonstrates how modern engineering tools, when paired with local expertise and thoughtful planning, can lead to tangible improvements in infrastructure, safety, and quality of life. The Promost-Wisła team, with over 20 years of experience using Plateia, has fully integrated the software into their design workflow—making it a trusted and efficient solution for even the most complex road engineering challenges. The Bochnia Bypass stands as a clear example of how advanced digital tools—combined with engineering excellence—can help shape safer, more connected, and sustainable communities.
About the company Promost-Wisła Sp.
Promost-Wisła Sp. z o.o. is a family-owned engineering company that has continued the legacy of Biuro Projektów Budownictwa Lądowego “Promost” Jerzy Śliwka, founded in 1993. Since 2004, it has operated in its current legal form, delivering high-quality services to public institutions and private sector clients, both in Poland and internationally. The company specializes in the design of bridge structures, roads, railways, and geotechnical infrastructure. Its scope of work includes concept development, structural design and modernization, expert evaluations, technical consulting, and implementation of advanced construction technologies. Promost-Wisła is known for its reliability, technical expertise, and commitment to excellence, as confirmed by numerous references.
Gallery of Promost-Wisła Projects
Highlights from the company’s recent infrastructure design work.
