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KZN Rail Sp. z o.o., Grupa KZN Bieżanów

Innovative

railway tracks

Reliable rail infrastructure contractor

KZN Rail with FPC certificate and National Technical Assessment for pre-fabricated slab

Projects co-financed

from European Union funds

We are building
rail infrastructure:

Our strategy is to provide comprehensive services for investment and maintenance processes related to modern rail infrastructure.

 

Every day, as we continue to build more and more tram and railway tracks, we are driving accessibility and attractiveness of environmentally friendly and efficient rail transportation.

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meters of tracks

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installed turnouts

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satisfied customers

Our goal is continuous development. It is achieved through:

 

building a qualified team of employees,

investments in modern and specialized equipment,

and the appropriate company business strategy.

Railway infrastructure

Tram infrastructure

Turnout logistics - Switcher

PWP gantries

Technical facilities - Tram depots

See our realizations

Modernization of the track and overhead line system at the Service and Maintenance Facility in Chorzów

Modernization of the track and overhead line system at the Service and Maintenance Facility in Chorzów

Tracks alteration in Przybyszewskiego Street in Łódź

Tracks alteration in Przybyszewskiego Street in Łódź

Extension of Kocmyrzowska Street on the section from the junction with the S7 expressway in the area of the intersection with Darwina Street and Podległych Street in Krzesławice to plot no. 513 cadastral district 11 Nowa Huta in the area of Bukszpanowa St

Extension of Kocmyrzowska Street on the section from the junction with the S7 expressway in the area of the intersection with Darwina Street and Podległych Street in Krzesławice to plot no. 513 cadastral district 11 Nowa Huta in the area of Bukszpanowa St

Track, catenary and accompanying infrastructure modernization at the Chebzie terminus in Ruda Śląska – stage II

Track, catenary and accompanying infrastructure modernization at the Chebzie terminus in Ruda Śląska – stage II

Delivery and installation of two tram turnouts with manual control mechanisms together with delivery and replacement of tracks at the Tram Depot Gdańsk-Nowy Port 

Delivery and installation of two tram turnouts with manual control mechanisms together with delivery and replacement of tracks at the Tram Depot Gdańsk-Nowy Port 

Works on the E75 line in the Czyżew – Białystok section 

Works on the E75 line in the Czyżew – Białystok section 

LOT A - Works on the 131 railway line in the Chorzów Batory (km 5,900) – Nakło Śląskie (km 29,000) section 

LOT A - Works on the 131 railway line in the Chorzów Batory (km 5,900) – Nakło Śląskie (km 29,000) section 

Expansion of repair shop at DB Cargo plant 

Expansion of repair shop at DB Cargo plant 

Delivery and unloading of turnouts to Radom Wschodni using Switcher wagons 

Delivery and unloading of turnouts to Radom Wschodni using Switcher wagons 

Delivery and unloading of turnouts to Gdynia Port using Switcher wagons 

Delivery and unloading of turnouts to Gdynia Port using Switcher wagons 

Delivery and unloading of turnouts: Switcher - LOT C 

Delivery and unloading of turnouts: Switcher - LOT C 

Delivery and unloading of turnouts to Bełchów using Switcher wagons 

Delivery and unloading of turnouts to Bełchów using Switcher wagons 

News from our industry

We have started the construction of a warehouse at the Przemyśl Bakończyce railway siding
07 listopada 2025
We have started the construction of a warehouse at the Przemyśl Bakończyce railway siding

Work on the Railway Infrastructure Construction Site in Przemyśl – Bakończyce is progressing according to schedule, an...

Reconstruction of Miechów Station
23 października 2025
Reconstruction of Miechów Station

In September 2025, we completed another stage of works as part of the reconstruction of railway stations along line no. 8, c...

KZN Rail at TRAKO 2025 – together with the KZN Bieżanów Group
12 września 2025
KZN Rail at TRAKO 2025 – together with the KZN Bieżanów Group

The TRAKO Trade Fair in Gdańsk is one of the most important railway industry events in Europe, and a place we have been part...

We have started the construction of a warehouse at the Przemyśl Bakończyce railway siding
07 listopada 2025
We have started the construction of a warehouse at the Przemyśl Bakończyce railway siding

Work on the Railway Infrastructure Construction Site in Przemyśl – Bakończyce is progressing according to schedule, an...

Reconstruction of Miechów Station
23 października 2025
Reconstruction of Miechów Station

In September 2025, we completed another stage of works as part of the reconstruction of railway stations along line no. 8, c...

KZN Rail at TRAKO 2025 – together with the KZN Bieżanów Group
12 września 2025
KZN Rail at TRAKO 2025 – together with the KZN Bieżanów Group

The TRAKO Trade Fair in Gdańsk is one of the most important railway industry events in Europe, and a place we have been part...

Selected realizations

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We have partnered

with numerous

domestic entities

Tormel Sp. z o.o. hereby certifies that the works under the aforementioned Contract were carried out properly, on time, in accordance with the Contract, good construction practices, and were duly completed.

Tormel Sp. z o.o. hereby certifies that the works under the subject Contract were carried out properly, on time, in accordance with the Contract, the principles of good construction practice, and were duly completed.

Katarzyna Szram-  President of the Management Board
31.10.2024

Tramwaje Śląskie S.A. certifies that the work within the subject matter of the Task was performed properly and in accordance with the Agreement.  

Bolesław Knapik, Chief Executive Officer
04.03.2025

The works were carried out with high diligence and professionalism in the comprehensive implementation of the commissioned task, in accordance with technical knowledge, applicable standards and regulations.

Jerzy Dul- Region Director

19 February 2024

Tramwaje Śląskie S.A. hereby certifies that the works under the said contract were duly executed.

Henryk Kolender- Finance Director

31 January 2024

Zakład Sieci i Zasilania Sp. z o.o. hereby certifies that the works were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Małgorzata Wilk- Kofnet- Logistics Director

3 November 2023

The construction works were carried out on time, with due diligence, in compliance with the contractual requirements and technical standards.

Bolesław Knapik- President of the Board, Chief Director
11 May 2023

Tramwaje Śląskie S.A. hereby confirms that the works under the said Contract were executed in a proper and timely manner, in accordance with the Contract, the rules of good building practice and applicable law.

Henryk Kolender- Management Board Member, Finance Director
17 March 2023

Tramwaje Śląskie S.A. hereby certifies that the works under the said contract were duly executed.

Bolesław Knapik
18.07.2023

PKP Linia Hutnicza Szerokotorowa Sp. z o. o. hereby certifies that the works under the said Contract were performed in accordance with the terms of the contract.

Leszek Senderski- Director of the Investment and Development Department
15 November 2022

“Koleje Małopolskie” Sp. z o.o. hereby certifies that the works under the said Contract were executed in a proper and timely manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Tomasz Warchoł- President of the Board

The works were carried out with high diligence and professionalism in the comprehensive implementation of the commissioned task, in accordance with technical knowledge, applicable standards and regulations.

Eugeniusz Kołodyński- Project Director

12 September 2022

All the works were executed in accordance with good building practice and in good quality. The company demonstrated professionalism, punctuality and diligence.

Piotra Szatkowski - Technical Director

27 April 2022

Zakład Robót Komunikacyjnych- DOM w Poznaniu Sp. z o.o. hereby certifies that the works under the said contract were executed in a proper and timely manner, in accordance with the Contract and the rules of good building practice and were prope...

Andrzej Kozera- Management Board Member

28 April 2021

Tramwaje Śląskie S.A. hereby certifies that the works under the said Contract were executed in a proper manner and in accordance with the Contract.

Bolesław Knapik- President of the Board

1 July 2021

Miejskie Przedsiębiorstwo Komunikacji sp. z o.o. hereby certifies that the works under the said Contract were executed in a proper manner, in accordance with the contract and the rules of good building practice and were properly completed.

Krzysztof Balawejder - President of the Board

16 February 2021 tram infrastructure

Fortum Silesia S.A. confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Fortum Silesia S.A., Andrzej Bąk - Manager of the Heat and Power Plant, Commercial Proxy

29 January 2019

Polska Grupa Górnicza S.A. KWK Piast-Ziemowit Division confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Polska Grupa Górnicza S.A, Rajmund Horst 

27.07.2018r.

Budimex S.A. confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Budimex S.A., Dariusz Bac - Region Director

31 July 2018

PKP PLK S.A. certifies that we are a reliable, trustworthy and worthy company. The works were performed on time and completed properly in accordance with the applicable technical standards and good building practice.

PKP Polskie Linie Kolejowe S.A., Michał Aleksy - Deputy Technical Plant Director

28 February 2018

Fortum Silesia S.A. confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Fortum Silesia S.A., Andrzej Bąk -

29 January 2019

PKP PLK S.A. certifies that we are a worthy, efficient and professional Contractor with qualified staff and specialized equipment. We ensure reliable and timely implementation of complex investment tasks.

PKP Polskie Linie Kolejowe S.A., Michał Aleksy - Deputy Technical Plant Director

24 January 2018

PKP PLK S.A. certifies that the works were performed on time and completed properly in accordance with the applicable technical standards and good building practice.

PKP Polskie Linie Kolejowe S.A., Michał Aleksy - Deputy Technical Plant Director, 28.02.2018

A consortium of companies consisting of: STRABAG Sp. z o.o. and STRABAG Infrastruktura Południe Sp. z o.o. certify that the works were completed and executed properly, without any reservations concerning technical aspects or quality, with due diligen...

STRABAG Infrastruktura Południe Sp. z o.o., Łukasz Płonka - Deputy Contract Director

18 September 2017

KZN “Bieżanów” confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Kolejowe Zakłady Nawierzchniowe “Bieżanów” Sp. z o.o., President of the Board Rafał Leszczyński

The General Contractor certifies that all works were completed on time, in accordance with good building practice, technical knowledge and in good quality. We have demonstrated great professionalism, punctuality and diligence.

Budimex S.A., Tomasz Guzik - Contract Manager

29 September 2017

PKP PLK S.A. Railway Track Unit in Opole hereby confirms that the works executed by our Company were performed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

PKP Polskie Linie Kolejowe S.A., Marcin Hałgas - Deputy Technical Director

3 July 2018

PNUIK Kraków certifies that the works were carried out with due diligence and to the highest quality, in accordance with the applicable rules of good building practice and technical knowledge, within the previously established deadlines and in...

Przedsiębiorstwo Napraw i Utrzymania Infrastruktury Kolejowej w Krakowie Sp. z o.o., Sebastian Motyl - Permanent Way Production Works Director

5 October 2018

Trakcja PRKiI S.A. certifies that the entrusted scope of works was executed in a proper manner, in accordance with the Contract and the rules of good building practice and properly completed.

TRAKCJA PRKiI. S.A., Radosław Zając - Commercial Proxy

6 April 2017

PKP PLK S.A. certifies that the subject of the contract was completed on time, with due diligence and in accordance with the rules of good building practice, and properly completed.

PKP Polskie Linie Kolejowe S.A., Sławomira Wierzchowska - Deputy Regional Director

23 August 2017

DOLKOM Sp. z o.o. confirms that all works were performed in a reliable and timely manner, in accordance with good construction practice and the requirements of the Investor

Dolnośląskie Przedsiębiorstwo Napraw Infrastruktury Komunikacyjnej DOLKOM Sp. z o.o., Andrzej Gola - President of the Board
7 March 2018

PKP PLK S.A. hereby confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

PKP PLK S.A., Michał Aleksy - Deputy Technical Plant Director

10 April 2017

STRABAG Sp. z o.o. hereby certifies that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

STRABAG Sp. z o.o. Marcin Czuba - Contract Manager

12 March 2018

According to PNUIK Kraków the works were carried out with due diligence and to the highest quality, in accordance with the applicable rules of good building practice and technical knowledge, within the previously established deadlines and in c...

Przedsiębiorstwo Napraw i Utrzymania Infrastruktury Kolejowej w Krakowie Sp. z o.o., Sebastian Motyl - Permanent Way Production Works Director 
5 October 2018
 

Zakład Produkcyjno-Usługowo-Handlowy Andrzej Duda confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

ZPUH Andrzej Duda, Owner – Andrzej Duda

3 April 2017

STRABAG Sp. z o.o. certifies that the works were executed properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building practice.

STRABAG Sp. z o.o., Jacek Krupiński - Director of the Railway Construction Division

9 October 2017

ZSiZ Sp. z o.o. certifies that the works under the said contract were executed in a proper manner, in accordance with the provisions of the construction law, and properly completed.

Zakład Sieci i Zasilania Sp. z o.o., Rafał Kurnatowski - Head of the Bid and Contract Department

16 April 2018

Przedsiębiorstwo Napraw i Utrzymania Infrastruktury Kolejowej certifies that the entrusted works were carried out with due diligence and to the highest quality, in accordance with the applicable rules of good building practice and technical knowledge...

PNUIK Sp. z o.o., Sebastian Motyl - Permanent Way Production Works Director

5 October 2018

Budimex S.A. confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Budimex S.A., Tomasz Guzik - Contract Manager

22 February 2018

Dolnośląskie Przedsiębiorstwo Napraw Infrastruktury Komunikacyjnej DOLKOM Sp. z o.o. certifies that the works were executed and completed properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance wi...

DOLKOM Sp. z o.o., Czesław Rosa - President of the Board, Adam Prynda - Technical and Commercial Director

17 March 2016

Budimex S.A. certifies that KZN Rail Sp. z o.o completed and executed the works properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building practice.

Budimex S.A., Dariusz Bac - Contract Director

28 June 2016

PNUIK Kraków Sp. z o.o. confirms that the works were completed and executed properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building practice...

PNUIK Kraków sp. z o.o., Marcin Szewczyk, Surface Works Production Director

8 March 2016

DABUD Sp. z o.o. hereby certifies that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed.

Przedsiębiorstwo Produkcyjno Handlowo Usługowe DABUD Sp. z o.o., Zdzisław Kasza - Commercial Proxy

29 March 2018

City Hall of Olsztyn certifies that the works were executed in accordance with the Contract, in a proper manner and in accordance with the rules of good building practice and were properly completed.

City Hall of Olsztyn, Piotr Grzymowicz – President of Olsztyn

5 October 2016

PNUIK Kraków Sp. z o.o. certifies that KZN Rail Sp. z o.o completed and executed the works properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good bu...

PNUIK Kraków sp. z o.o., Marcin Szewczyk, Surface Works Production Director

2 March 2016

STRABAG Sp. z o.o. certifies that KZN Rail Sp. z o.o. completed and executed the works properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building prac...

Strabag Sp. z o.o., Marek Sobota - Director, Olsztyn Division

22 February 2016

Budimex Sp. z o.o. certifies that the works were completed and executed properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building practice.

Budimex Sp. z o.o., Marcin Szulc - Contract Manager

DOLKOM Sp. z o.o. confirms that the works were carried out properly, in accordance with the rules of good building practice and were properly completed.

DOLKOM Sp. z o.o., Czesław Rosa – President of the Management Board, Mirosława Talarska – Economic and Financial Director, 9 April 2015.

Dolnośląskie Przedsiębiorstwo Napraw Infrastruktury Komunikacyjnej “DOLKOM” Sp. z o.o. confirms that the works were carried out properly, in accordance with the rules of good building practice and were properly completed.

DOLKOM Sp. z o.o., Czesław Rosa – President of the Management Board, Mirosława Talarska – Economic and Financial Director

9 April 2015

Budimex S.A. confirms that the works were carried out properly, in accordance with the rules of good building practice and were properly completed.

Budimex S.A., Marcin Szulc, Contract Manager

11 February 2015

PNUIK Kraków Sp. z o.o. certifies that the works were executed properly, without any reservations concerning technical aspects or quality, with due diligence, in accordance with the Contract and the rules of good building practice.

PNUIK Kraków sp. z o.o., Marcin Szewczyk, Surface Works Production Director

2 March 2016

OHL ZS Polska Sp. z o.o. confirms that the works were carried out properly, in accordance with the rules of good building practice and were properly completed.

 OHL ZS Polska Sp. z o.o., Piotr Fried, Project Manager 

 

Municipal Infrastructure and Transport Board in Kraków certifies that the works were executed in a proper manner, in accordance with the rules of good building practice and were properly completed. 

Municipal Infrastructure and Transport Board in Kraków, Jerzy Marcinko, Director for Municipal Infrastructure and Transport 

17 March 2014 

Dolnośląskie Przedsiębiorstwo Napraw Infrastruktury Komunikacyjnej “DOLKOM” confirms that the works were carried out properly, in accordance with the rules of good building practice and were properly completed. 

Dolkom Sp. z o.o. Czesław Rosa, President of the Board 

9 July 2014 

Municipal Roads and Public Transport Authority in Bydgoszcz certifies that all works were carried out on time, with due diligence, in accordance with the rules of good building practice and under the supervision of professional engineering and techni...

Tomasz Szymański, Deputy Director for Road Investments 

Municipal Roads and Public Transportation Authority in Bydgoszcz, 8 April 2014 

Tramwaje Śląskie S.A. confirms that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed. 

Hubert Ściana Head of the Track and Network Department, Tramwaje Śląskie SA 

27 July 2020 tram infrastructure 

PKP Polskie Linie Kolejowe S.A., Railway Track Unit in Tarnowskie Góry hereby certifies that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were p...

Wojciech Kwiatkowski Director of the Railway Track Unit in Tarnowskie Góry 

31 March 2020 solutions for the rail industry 

We hereby recommend KZN Rail (...) as a reliable and timely Partner and can certainly recommend this company for similar tasks. 

Andrzej Ryszard Kozera Management Board Member Technical and Commercial Director at ZRK DOM 

19 March 2020 project using Switcher 

Pre-Fabrykat Sp. z o.o. hereby certifies that the works under the said contract were executed in a proper manner, in accordance with the Contract and the rules of good building practice and were properly completed. 

Grzegorz Sadownik Vice President of the Management Board at Pre-Fabrication 

21 May 2019 railway project 

I recommend KZN Rail as a proven, reliable and credible contractor for specialized maintenance and repair works on railway sidings.  

Rafał Leszczyński President of the Management Board of KZN “Bieżanów” 

24 April 2019 railway project 

I recommend KZN Rail as a proven, reliable and credible contractor for specialized maintenance and repair works on railway sidings.  

Rafał Leszczyński President of the Management Board of KZN “Bieżanów” 

24 April 2019 railway project 

Budimex S.A. (...) hereby certifies that KZN Rail (...) performed the task entitled “Alteration of Kostrzyńska Street” 

Grzegorz Domaradzki Director of the Infrastructure Construction Division South, Budimex SA 

12 September 2019 tram project 

Fortum Silesia S.A. confirms that KZN RAIL (...) performed the task entitled: Alteration of the tram track along Wolności Street in Zabrze, together with the necessary rearrangements (...) The works were done properly. 

Kamila Zybura-Pluta Attorney of Fortum Silesia SA 

1 February 2019 tram infrastructure

Tramwaje Śląskie S.A. hereby certifies that the works under the said contract were executed in a proper manner, in accordance with the Contract and the provisions of the construction law and were properly completed. 

Bolesław Jerzy Knapik President of the Board Tramwaje Śląskie S.A. 

24 April 2020 tram project 

KZN Bieżanów Group

Simple responses to real market needs make the best business ideas. This was also our case. Kolejowe Zakłady Nawierzchniowe “Bieżanów” has been manufacturing railway turnouts for nearly 80 years. Read more

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Quality Policy:

From the very moment the company was founded, quality has been our focus. This approach guarantees due performance of construction projects, transparent and rational

conduct of business processes, and safety for our employees and associates. Read more

Quality Policy:

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