Railway tunnel LK104 sec. D Limanowa - Klęczany siding.

LocationSection D: Limanowa – Klęczany siding.

InfrastructureKey element of railway line 104 modernization.

StatusCompleted

/ Project details

Railway tunnel LK104sec. D Limanowa - Klęczany siding

/ Project information

Consortium:: Budimex S.A., Gülermak S.A., Gülermak Agır Sanayi Insaat ve Taahhüt A.S. s.c.
Implementation period:: 2025 - 2026
Work system:: 24/7 production
Resources:: approx. 50 Transbet TCS employees

At the time of construction, the longest railway tunnel in Poland

Railway line 104 on section D Limanowa - Klęczany siding.

The Podłęże–Piekiełko project is one of the most important railway investments in Poland in recent decades. The construction of a tunnel drilled using the TBM method under Mount Pisarzowa is a strategic undertaking that will shorten travel time between Krakow, Nowy Sącz and Zakopane, improve regional accessibility and strengthen the national transport infrastructure.

This is an investment of enormous economic and social importance, carried out in difficult mountainous terrain, using the most modern technologies. The project includes 2 tunnels running in parallel (evacuation and railway), and about 50 Transbet TCS employees are employed in the implementation.

/ Interesting facts in numbers

TBM Shield Kinga

Evacuation tunnel

Tunnel length: 3 772 m
Drilling diameter: 4,8 m
Tubings (A-E): 5
Rings: 3 088
Reinforcement cages: 15 440
Steel / week: 40+ t

Each segment welded in 3 types: Type 1 - basic reinforcement, type 2 and type 3 - reinforced reinforcement used in critical tunnel zones (e.g. evacuation exits). Segment A serves as the key for the entire ring.

TBM Shield Jadwiga

Railway tunnel

Tunnel length: 3 750 m
Drilling diameter: 10,6 m
Tubings (A-G): 7
Rings: 1 880
Reinforcement cages: 13 160
Steel / week: 100+ t

Role of Transbet TCS.

/ 01

Transbet TCS is responsible for the production of reinforcement cages for both tunnels - railway and evacuation. The scope of work includes steel preparation, welding in certified technology, quality control and delivery logistics. Each element is created in accordance with rigorous standards, and the schedule is constantly monitored.

/ 02

As part of the project, steel racks and universal molds for welding reinforcement cages were made. The molds are equipped with color markings of bar positioning points, described in welding instructions, which ensures precision and repeatability.

/ 03

The organization of production halls was also designed, guaranteeing work ergonomics and optimal placement of workstations. A storage system compliant with the FIFO principle was introduced, enabling identification of cages by production date and type, which minimizes the risk of corrosion and ensures continuity of deliveries despite the varying pace of tunnel drilling.

Complexity and pace of implementation.

The tunnel drilling works are carried out around the clock, 7 days a week, without breaks, which requires perfect coordination of all deliveries and processes. The schedule is tight, and every hour counts. Delays in one area can affect the entire project.

This is work under constant time pressure, where flexibility and quick response are key.

24/7 Production
50 workers
At the time of construction, the longest railway tunnel in Poland