Reconstruction of the existing and construction of the second track on the section Hrvatski Leskovac – Karlovac on the railway line M202 Zagreb Main Station – Rijeka

Section Hrvatski Leskovac – Karlovac (44.0 km) is an integral part of the main corridor railway line for international transport M202 Zagreb Main Train Station – Rijeka on the Corridor RH2. It is also a part of the rail section Rijeka – Zagreb – Budapest on the Mediterranean Corridor.

Project Reconstruction of the Existing and Construction of the Second Track on the Section Hrvatski Leskovac – Karlovac has been divided into eleven stages, eight of which have been completed by the STRABAG Company. Works have been completed on two underpasses (Lazina and Ribnjak), four overpasses (Pavučnjak, Domagović, Cvetković and Zdenčina), on the unclassified road Orlovac – Ilovac, and the traction substation Mrzlo Polje.

For the remaining three stages (track, stations, stops, bridges and viaducts, underpass Bedekova, etc.), a public procurement procedure for the works has been carried out. On 6 February 2026 a selection decision was made for the COMSA S.A Company. The contract was signed on 17 April 2026. The value of the works is EUR 278,849,960.28 excluding VAT, or EUR 348,562,450.35 including VAT. Works on the section should be completed within the 36-month period.

The works will upgrade section Hrvatski Leskovac – Karlovac for the maximum permitted speed of 160 km/h, except in Mavračići, Jastrebarsko and Karlovac, with the speed of 120 km/h, or 140 km/h due to spatial constraints. The current single-track electrified 25 kV AC 50 Hz railway will also be upgraded to the double-track line. The Project will also help boost competitiveness of the Port of Rijeka by improving its transport connections with Central European markets. Finally, it will also enhance suburban transport in the cities of Zagreb and Karlovac.

The Project includes the following works:

Reconstruction of three stations: Hrvatski Leskovac, Jastrebarsko and Karlovac
Conversion of three stations into stops: Horvati, Zdenčina (stop/dispatch) and Draganići
Reconstruction of four existing stops: Mavračići, Desinec, Domagovići and Lazine
Extension of the useful track length in the stations to 750 m
Installation of a new electronic signaling and interlocking equipment ETCS level 1 and a new traffic control-command subsystem with remote control of external elements; electrification with a 25 kV/50 Hz system; reconstruction of the electric traction substation Mrzlo Polje and Zdenčina
Construction of three new underpasses and four new overpasses with associated roads, instead of level crossings
Construction of new redirection roads due to the removal of existing level crossings
Reconstruction of the particular existing level crossings
Construction of noise barriers
Construction of the closed drainage system
Reconstruction of all existing bridges, viaducts and other structures on the section route.