Location: Jesenitze – Slovenia
Start of construction: October 2020
Status: Completed April 2021
Type: Railway tunnel – renovation
Length: appx. 4000m
Client: STRABAG AG

Location: Arosa – Switzerland
Start of construction: September 2020
Status: Completed November 2021
Type: Railway tunnel – widening
Length: 299m
Client: Heitkamp Construction Swiss GmbH

Location: Winden im Elztal – Germany
Start of construction: August 2018
Status: Completed – November 2021
Type: Road tunnel – new construction
Length: 765m
Client: ARGE Tunnel Brandberg – Baresel – Heitkamp

Location: Gloggnitz – Austria
Start of construction: August 2015
Status: Under construction
Type: Railyway tunnel – new construction
Length: appx. 7,5km
Client: ARGE Tunnel Semmering SBT 1.1 – Implenia – Hochtief – Thyssen Schachtbau

Location: St. Kanzian – Austria
Start of construction: May 2016
Status: Completed – September 2019
Type: Eisenbahntunnel – new construction
Length: Tunnel Stein 1535m and Tunnel Lind 451m
Client: Baresel GmbH